COMPUTER OPERATOR AND PROGRAMMING ASSISTANT JULY 2018

COMPUTER OPERATOR AND PROGRAMMING ASSISTANT

JULY 2018

Excel uniquely identifies cells within a
worksheet with a cell name
a. Cell names
b. Column numbers and row letters
c. Column letters and row numbers
d. Cell locator coordinates
Answer : b. Column numbers and row letters

A worksheet can have a maximum of
 Number of rows.
a. 256
b. 1024
c. 32000
d. 65535
Answer : d. 65535

The programs that are used to find out possible
faults and their causes are called
a. Operating system extensions
b. Cookies
c. Diagnostic software
d. Boot diskettes
Answer : c. Diagnostic software

Which of the following is also known
as brain of computer?
a. Control unit
b. Central Processing unit
c. Arithmetic-logic unit
d. Monitor
Answer :  b. Central Processing unit

1 Byte =?
a. 8 bits
b. 4 bits
c. 2 bits
d. 9 bits
Answer : a. 8 bits
In order to protect computer systems from
viruses we use ______ software.
a. antivirus
b. antiworm
c. application
d. firewall
Answer : a. antivirus

Which of the following is not a font style?
a. Bold
b. Italics
c. Regular
d. Superscript
Answer : d. Superscript

Addresses separate the user name from
the ISP using the___ symbol.
a. &
b. @
c. %
d. *
Answer : b. @

Which menu provides you options like
Animation Scheme, custom Animation, Slide
Transition?
a. Insert Menu
b. Format Menu   
c. Tools Menu
d. Slide Show Menu.
Answer : d. Slide Show Menu.

Which would you choose to move selected
text from one place to another?
a. Move and Paste 
b. Copy and Paste
c. Cut and Paste   
d. Delete and Paste
Answer : c. Cut and Paste   
What is the tool in Word that copies only
the format of selected text so that you can apply
other text?
a. Copy
b. Paste
c. Format Painter 
d. Paste Special
Answer : c. Format Painter 

Gutter position can be set in the following positions
a. Left & Right   
b. Left & Top
c. Left & Bottom   
d. Left Only
Answer : b. Left & Top

Background color or effects applied on a
document is not visible in
a. Web layout view
b. Print Layout view
c. Reading View
d. Print Preview
Answer : d. Print Preview

ISP exchanges internet traffic between
their networks by
a. Internet exchange point
b. Subscriber end point
c. Isp end point
d. None of these
Answer : a. Internet exchange point

URL stands for
a. Unique reference label
b. Uniform reference label
c. Uniform resource locator
d. Unique resource locator
Answer :  c. Uniform resource locator

The first page on the website is called
a. Design page   
b. Home page
c. First page
d. Main page
Answer : b. Home page

In HTML, Uniform Resource Identifier (URI) is used to
a. Create a frame document
b. Create an image map in the webpage
c. Customize the image in the webpage
d. Identify a name or a resource on the internet
Answer : d. Identify a name or a resource on the internet

Dynamic web page
a. Is same every time whenever it displays
b. Generates on demand by a program or
a request from browser
c. Both (a) and (b)
d.  None of these
Answer : b
All networks require a central location to bring
media segments together. These central
locations are called ................
a. Bridges
b. Switches
c. Hubs
d. Routers
Answer : c. Hubs

Communication channel is shared by all
the machines on the network in
a. Broadcast network .   
b; Unicast network
c. Multicast network
d. None of these
Answer : a. Broadcast network
What PowerPoint feature will you use to apply
motion effects to different objects of a slide?
a. Slide Transition
b. Slide Design
c. Animation Objects
d. Animation Scheme
Answer : d. Animation Scheme

Which of the following views is the best view
to use when setting transition effects for all
slides in a presentation?
a. Slide sorter view
b. Notes pages view
c. Slide view
d. Outline view
Answer : c. Slide view

Which of the following can you use to
add times to the slides in a presentation?
a. Slide Show menu
b. Rehearse timing button
c. Slide transition button
d. All of these
Answer : b. Rehearse timing button

A relational database consists of a collection of
a. Tables
b. Fields
c. Records
d. Keys
Answer : c. Records

The term attribute refers to a__of a table.
a. Record
b. Column
c. Tuple
d.Key
Answer : b. Column

26. For each attribute of a relation, there is a set
of permitted values, called the ….. attribute.
a. Domain
b. Relation
c. Set
d. Schema
Answer : a. Domain

In SQL the spaces at the end of the string
are removed by_function.
a. Upper
b. String
c. Trim
d. Lower
Answer : c. Trim

On an excel sheet the active cell is indicated by
a. A dotted border
b. A dark wide border
c. A blinking border
d. By italic text
Answer :  b. A dark wide border

The intersection of a column and a row on a
worksheet is called
a. Column
b. Value
c. Address
d. Cell
Answer :  d. Cell

A feature of MS Word that saves the document
automatically after certain interval is
available on
a. Save tab on Options dialog box
b. Save As dialog box
c. Both (a) & (b)
d. None of these
Answer : a. Save tab on Options dialog box 

RRB EXAM USED WELDER SEM 1 THEORY JULY 2018 QUESTIONS

WELDER THEORY JULY 2018

Which one of the following is not the cost due to an accident?
a) Cost due to damage to machine, tools, material and property
b) Cost of lost time of the injured person
c) Cost of compensation and medical aid
d) Cost due to increase in production
Answer: d) Cost due to increase in production

The welding machine, which is used to convert AC
welding supply to DC welding supply is ……
a) Motor generator set
b) Engine generator set
c) Rectifier set
d) Welding transformer
Answer: c) Rectifier set

In gas cutting, if too little cutting oxygen is supplied ……
a) The metal will be cooled down
b) The kerf  will be narrow
c) The kerf  will be wide
d) The metal will fail to cut completely
Answer: d) The metal will fail to cut completely

Neutral flame in gas welding contains ……….
a) Oxygen & Actylene in equal proportion
b) More oxygen than Acetylene
c) Less oxygen than Acetylene
d) None of these
Answer: a) Oxygen & Actylene in equal proportion

The chief alloying elements of stainless steel are …..
a) Chromium and nickel
b) Chromium and tungsten
c) Nickel and vanadium
d) Nickel and tungsten
Answer: a) Chromium and nickel

The safe way of working is ……..
a) An effective and right way of working
b) An ancient way of working
c) A way of handling the work in a hurry
d) A way of normal working
Answer:  a) An effective and right way of working


In a transformer, if the number of turns in
the secondary winding is twice that in
primary winding, the secondary voltage will be …..
a) Half that of primary voltage
b) Same as the of primary voltage
c) Twice the primary voltage
d) Four times the primary voltage
Answer:  c) Twice the primary voltage
Increase of carbon content in steel results in …….
a) Increase in hardness
b) Increase in malleability
c) Increase in ductility
d) Increase in strength
Answer:  a) Increase in hardness


In case of arc welding, one should protect his eyes by using …..
a) Dark glass screen
b) Sun goggles   
c) Mask
d) Clear glasses
Answer: a) Dark glass screen

Which one of the following properties is most
essential for the metals in the process of
casting, welding, brazing and soldering?
a) Fusibility
b) Malleability
c) Tenacity
d) Plasticity
Answer: a) Fusibility

The electrode size refers to …….
a) Diameter of its core wire
b) Diameter (overall) of electrode
c) Thickness of flux coating
d) Length of electrode
Answer:  a) Diameter of its core wire

The size of the cutting nozzle used in
Oxy-acetylene cutting process depends mainly on ….
a) Thickness of metal to be cut
b) Purity of oxygen
c) Duration of cut
d) Type of cutting blowpipe
Answer:  a) Thickness of metal to be cut

Cast iron is used for manufacturing machine beds because -
a) It can resist more compressive stress 
b) It is heavy in weight
c) It is a cheaper metal
d) It is a brittle metal
Answer:  a) It can resist more compressive stress
 In a transformer, the winding to which electric
supply is given as input is called
a) Primery winding
b) Secondary winding
c) Main winding
d) Auxiliary winding
 Answer:   a) Primary winding
Which one of the following is the type of
transformer used in arc welding?
a) Step down
b) Step up
c) One-to-one
d) Capable of increasing supply voltage
Answer:   a) Step down
Which is the cause of electric fire?
a) Loose connection
b) Over loading the wires
c) Electric short circuit
d) All of these
Answer:   a) Loose connection

If the blowpipe is moved to and fro frequently
while cutting the kerf will ….
a) Be more
b) Of correct size 
c) Be less
d) Not be affected
Answer:   a) Be more

In the process of soldering, you have noticed
that solder is not sticking sufficiently heated
copper soldering bit when rubbed over solder bar.
What step do you take to overcome the
problem?
a) Pre- heat the solder
b) Clean the bit thoroughly
c) Change the soldering bit shape
d) Rub the bit over solder for longer period
Answer: b) Clean the bit thoroughly


According to ohms law ….
a) V = I/R
b) R = VI
c) I = V/R
d) I = VR
Answer: c) I = V/R

No current flow in ……
a) Closed circuit
b) Open circuit   
c) Short circuit
d) Parallel circuit
Answer: b) Open circuit
Which one of the following is a chemical property of metal?
a) Corrosiveness 
b) Conductivity
c) Hardness
d) Elasticity
Answer: a)  Corrosiveness

 Which type of fire extinguisher is used in a welding shop?
a) Foam type extinguisher
b) Dry powder extinguisher
c) C02 extinguisher
d) Halon  extinguisher
Answer: c) C02 extinguisher

The arc utilized in electric arc welding is a …….
a) High voltage, high current discharge
b) Low voltage, low current discharge
c) Low voltage, high current discharge   
d) High voltage, low current discharge
Answer: c) Low voltage, high current discharge

 The position in which it is easiest to weld is -
a) Flat
b) Vertical
c) Horizontal
d) Overhead
Answer: a) Flat

The ability of a metal to be drawn into wire is a measure of its
a) Ductility
b) Toughness
c) Malleability 
d) Hardness
Answer: a) Ductility

The electrodes are manufactured in two standard lengths namely ….
a) 350 mm and 250 mm
b) 350 mm and 450 mm
c) 400 mm and 500 mm
d) 12"and 10"
Answer: 350 mm and 450 mm

In an acetylene cylinder, the acetylene is dissolved in ….
a) Water
b) Carbon Dioxide
c) Acetone
d) Mercury
Answer: c) Acetone

Which fuel gas is used for cutting deep under water?
a) Acetylene
b) Hydrogen
c)LPG
d) Methane
Answer: b) Hydrogen

Acetylene is a fuel gas for gas cutting & welding composed of-
a) 7.7 of carbon & 92.3 % of  hydrogen 
b) 92,3% carbon & 7.7 % hydrogen
c) 100% carbon
d) 50% carbon & 50% hydrogen
Answer: b) 92,3% carbon & 7.7 % hydrogen


Match the following tools and their use -
TOOLS :-
p. Hand shield, q, chipping hammer r, Tongs s. Try square
USES:-   
1. To remove slag     2. To check squareness   3. To hold hot jobs
4 to protect eyes from uv rays
a) p4, q-2, r-3, s-4
b) p-2. q-1, r-3 s-4
c) p-4, q-1, r- 2 s- 3
 d) p-4 q-1 r-3 s-2
Answer: d) p-4 q-1 r-3 s-2

What should never be used on gas cylinders, regulators and holes,
a) Wrenches
b) Teflon tapes
c) Leak detectors
d) Oil
Answer: d) Oil

While gas cutting the nozzle should?
a) Almost touch the work
b) Be 1.0 mm away from work
c) Be 2 mm away from work
d) Be 5 mm away from work
Answer: b) Be 1.0 mm away from work

What purpose is served by flux during soldering?
a) It cleans the surface to be soldered
b) It lowers the melting point of the solder
c) It makes the flow of solder in the joint easy
d) It does all of above
Answer: d) It does all of above

A cylinder while contains acetylene will be painted …
a) Brown
b) Black
c) Blue
d) Maroon
Answer: d) Maroon

Match the welding terms with their definitions ….
1 Parent metal 2 Filler metal 3 Deposited metal
 with that of its definition
p. Metal which becomes a part of the joint ,
q. Metal to be joined r. Metal added during welding
a) 1-p, 2-q and 3-r
b) l-q9 2-p and 3-r
c) 1-r, 2-q and 3-p
d) 1-q, 2-r and 3-p
Answer: d) 1-q, 2-r and 3-p

Cast iron contains two elements, which make it difficult
 to cut it by gas cutting. What are these elements?
a) Sulphur and phosphorous
b) Silicon and graphite
c) Graphite and phosphorous
d) Silicon and sulphur
Answer: b) Silicon and graphite
In DC welding heat distribution is possible between
electrode and the base metal due to the change of polarity.
The distribution of heat is -
a) Positive 2/3 and negative 1/3
 b) Positive 1 /3 and negative 2/3
c) Positive 3/4 and negative 1/4

d) Positive 1/4 and negative 3/4

EMPLOYABILITY SKILLS (TWO YEAR TRADE) (MORNING SESSION) SEMESTER II JULY 2018

EMPLOYABILITY SKILLS

(TWO YEAR TRADE)

(MORNING SESSION)

SEMESTER II

JULY 2018

Which one is Element of Quality-
a) Performance
b) Durability
c) Design
d) Appearance
Answer : c) Design

The resources utilized for production are-
(a) Material Methods, Machines
(b) Machines, Manpower, Methods
(c) Methods, Machine, Manpower
(d) Materials, Machines, Manpower
Answer : (d) Materials, Machines, Manpower

Productivity is the_of production system.
(a) Measurement
(b) Efficiency
(c) Both (a) and (b)
 (d) None of these
Answer : (b) Efficiency

Raw material productivity can be increased by-
(a) Proper choice of design,
(b) Reuse of material
(c) Scrap control
(d) All of these
Answer : (d) All of these

The elimination of which of the following will
improve industrial productivity-
(a) Excess time
(b) Ineffective time
(c) Both (a) and (b)
(d) None of these
Answer : (c) Both (a) and (b)

Which one is Dimension of quality-
(a) Conformance
(b) Product
(c) Performance
(d) None 0f these
Answer : (c) Performance

Having more than 50% ownership position
that provides the entrepreneur with managerial
control is called-
(a) Joint venture
(b) Majority interest
(c) Horizontal merger
(d) Diversified activity merger
Answer : (b) Majority interest

Information regarding all of the following is
related to operations, EXCEPT;
(a) Location
(b) Promotion
(c) Raw materials
(d) Labour skills
Answer : (b) Promotion

GATT is established in 1947, under-
(a) German leadership
(b) U.S. leadership
(c) French leadership
(d) U.K. leadership
Answer : (b) U.S. leadership

According to Factories Act, factories employing
over women workers have to provide for crèches.
(a) 10
(b) 20
(c) 30
(d) 40
Answer : (c) 30

The Workmen's Compensation Act provides
compensation in case of -
(a) Disablement
(b) . Funeral expenses
(c) Maternity expenses
(d) Sickness
Answer : (a) Disablement

Which one is Element of quality control-
(a) Labour
(b) Customer Service
(c) Time
(d) Safety
(a) Labour

Which one is Function of Inspection Department-
(a) Tool Inspection
(b) Raw Material Inspection
(c) Both 'a' and 'b'
(d) None of these
Answer : (c) Both 'a' and 'b'

Which one is the Advantage of Centralised Inspection-
(a) Co-ordination between labour and Inspector
(b) Barrier in production
(c) Use of less equipments
(d) Both a and c
Answer : (d) Both a and c

"DIC" stand for-
(a) Direct Investment Centre
(b) Delhi Industrial Corporation
(c) District Industrial Centre
(d) District Investment Corporation
Answer : (c) District Industrial Centre

"SFC" stands for-
(a) Special Financial Centre
(b) Small Industrial Financial Corporation
(c) Special Fund Centre
(d) State Financial Corporation
Answer : (d) State Financial Corporation

District Industries Centres does promotion for_industries.
(a) Small
 (b) District level
(c) National level
 (d) None of these
Answer : (a) Small


MSME stand for:
(a) Micro Small and Medium Enterprises
(b) Ministry of Small and Micro Enterprises
(c) Ministry of Small and Medium Enterprise
(d) None of the above
Answer : a) Micro Small and Medium Enterprises

Which one is NOT the main aim of MSME;
(a) Providing high value loans for Small Industries
(b) Advising Government in policy formulation
     for promotion of MSMEs
(c) Providing managerial consultancy to MSMEs
(d) Providing technology up-gradation facilities
Answer : (a) Providing high value loans for Small Industries

Which formula correctly describes productivity?
(a) (Output - Input)/Output
(b) (Input - Output) / Input
(c) Output/Input
(d) Input/Output
Answer : (c) Output/Input

Which Bank was Nationalized on 15th April, 1980:
(a) The Andhra Bank Ltd.
(b) Central Bank of India
(c) Bank of Baroda
(d) Indian Overseas Bank
Answer : (a) The Andhra Bank Ltd.

The first Cotton Mill was established:
(a) Near Calcutta
(b) Near Rajasthan
(c) Near Gujarat
(d) Near Andhra Pradesh
Answer : (a) Near Calcutta

Where the Employees State Insurance
Corporation's office is established.
(a) Mumbai
(b) Kolkata
(c) New Delhi
(d) Chennai
Answer : (c) New Delhi

What is the foil form of TQM:
(a) Total Quality Management
(b) Total Quantity Management
(c) Trial Quality Major
(d) None of these
Answer : (a) Total Quality Management

If inputs decrease while output remains constant,
what will happen to productivity?
(a) It will increase
(b) It will decrease
(c) It will remain the same
(d) It is impossible to tell
Answer : (a) It will increase

WIREMAN THEORY SEMESTER-1 JULY 2018

WIREMAN THEORY

SEMESTER-1

JULY 2018

When a capacitor is charged through a DC supply
source for infinite time, the final current through it is -
(a) Determined by the resistor
(b) Half of the initial current
(c) Infinite
(d) Zero
Answer :  (d) Zero

The Electronic grade solder has a Tin: Lead ratio of....
(a) 40:60
(b) 60:40
(c) 35:65
(d) 70:30
Answer :  (b) 60:40

Generally battery containers are made with -
(a) Hard Rubber
(b) Hard Plastic
(c) Polypropylene
(d) None of these
Answer :  (c) Polypropylene

The sheath is used in cables to.................
(a) Provide strength to the cable
(b) Provide proper insulation
(c) Prevent moisture from entering the cable
(d) Avoid chances of corrosion on strands
Answer :  (a) Provide strength to the cable

Load of an electrical network determines -
(a) Resistance
(b) Impedance
(c) Current
(d) Voltage
Answer : (c) Current

The capacitors are used across AC supply for.................
(a) Power improvement
(b) Power factor improvement
(c) Current improvement
(d) Voltage improvement
Answer : (b) Power factor improvement

Which of the following bulbs will have the least resistance?
(a) 230 V, 60 W
(b) 230 V, 100 W
(c) 115 V.60 W
(d) 115 V, 100 W
Answer : (d) 115 V, 100 W

The phenomenon of induced magnetism lagging
behind the magnetizing force is known as ……
(a) Eddy currents
(b) Hysteresis
(c) Reluctance
(d) Permeability
Answer : (b) Hysteresis

The..............are tools used for bending, seaming and
forming of sheet metal that cannot be done on any
regular machine
(a) Snips
(b) Vices
(c) Stakes
(d) Centre Punch
Answer : (c) Stakes

In full wave rectifiers the current rating of each
diode is ...... to /of the DC output current.
(a) Equal
(b) Half
(c) Double
(d) Three times
Answer : (b) Half

The type of switch used in Staircase wiring is............
(a) Rotary Switch
(b) Push Button
(c) Two Way Switch
(d) One Way Switch
Answer : (c) Two Way Switch

When the core becomes magnetically saturated,
the increase in magnetic field strength H
(a) Enhances B drastically
(b) Decreases the permeability of the core
(c) Increases the permeability of the core
(d) Almost has no effect on magnetic induction B.
Answer : (d) Almost has no effect on magnetic induction B.

The nominal voltage of Lead-acid cell in an open
circuit is approximately…….
(a) 2 Volts
(b) 1.5 Volts
(c) 1,25 Volts
(d) 2.5 Volts
Answer : (a) 2 Volts

While selecting a fixed value resistor, its main
specifications to be considered are....
(a) Voltage, wattage and tolerance in percents.
(b) Voltage, Current and Size
(c) Value in Ohms, Voltage and size
(d) Value in Ohms, Wattage and tolerance of its value
Answer : (d) Value in Ohms, Wattage and
                       tolerance of its value

The specific gravity of a Lead-acid battery's
electrolyte is measured by
(a) Hydrometer
(b) Barometer
(c) Hygrometer
(d) Pyrometer
Answer : (a) Hydrometer

Power factor of a pure resistive circuit is.................
(a) Zero
(b) Lagging
(c) Leading
(d) Unity
Answer : (d) Unity

The function of the choke coil in fluorescent
lamp circuit is.......
(a) Only to limit the operating current
(b) Only to produce starting voltage impulse
(c) To produce starting voltage impulse and to
      limit the operating current *
(d) To limit the heating cuitent of filaments
Answer : (c) To produce starting voltage impulse
                      and to limit the operating current

AC mains supply in India has the frequency of..........
(a) 100 Hz
(b) 60Hz
(c) 50 Hz
(d) 40Hz
Answer : (c) 50 Hz

The fixed value Carbon Resistors are generally
not more than......Watts.
(a) 10
(b) 6
(c) 4
(d) 2
Answer : (d) 2

In an Inductive AC circuit, current.,
(a) Lags behind the voltage by 180°
(b) Leads the Voltage by 90u
(c) Lags behind the Voltage by 90°
(d) Is in phase with the Voltage
Answer : (c) Lags behind the Voltage by 90°

In a simple circuit consisting of a resistor of value R,
when voltage V is kept constant, then
the current.,................
(a) I is a directly proportional to R
(b) I=R
(c) I is inversely proportional to R
(d) I is constant irrespective of changes in R
Answer : (c) I is inversely proportional to R

The MCB's working is based on.........................
(a) Thermal operation   
(b) Thermal and Magnetic operations
(c) Magnetic operation
(d) Simple Mechanical Switching operation
Answer : (b) Thermal and Magnetic operations

The tripping time of ELCBs is usually less than.........
(a) 30 ms
(b) 80ms
(c) 100 ms
(d) 200 ms
Answer :  (a) 30 ms

Which of the following materials is a good Insulator?
(a) Aluminium
(b) Copper
(c) Porcelain
(d) Silver
Answer: (c) Porcelain

Which of the following materials is a good conductor?
(a) Mica
(b) Copper
(c) Rubber
(d) Ebonite
Answer:  (b) Copper

The electrolyte used in Aluminum anodizing is dilute...........
(a) Nitric acid
(b) Aluminum sulphate solution
(c) Hydrochloric acid
(d) Sulphuric acid
Answer: (d) Sulphuric acid

The positively charged ions are called.................
(a) Cations
(b) Atoms
(c) Anions
(d) Neutrons
Answer: (a) Cations

The..........of a substance is the amount deposited
on the Electrode on passing a steady electric current
of one ampere for One second through its solution.
(a) Equivalent weight
(b) Atomic weight
(c) Electro chemical equivalent
(d) Chemical equivalent
Answer: (c) Electro chemical equivalent

The............. circuit is usually operated by
adjusting the variable resistor until no current
flows in the ammeter.
(a) Resistors in parallel
(b) Resistors in series
(c) Wheatstone bridge
(d) Feedback
Answer: c) Wheatstone bridge


Certain materials normally behave as insulators
but allow for more valence electrons to be
made available by thermal energy.
These elements are known as.........
(a) Semiconductors
(b) Conductors
(c) Insulators
(d) Conduction band
Answer: (a) Semiconductors

The...................has a hammer face which is
used to drive in nails and the other end is
used for pulling out nails from the wood.
(a) Mallet   
(b) Claw Hammer
(c) Ball Pen Hammer
(d)Axe
Answer: (b) Claw Hammer

An electrical component with resistance and
inductance elements with draw ……
(a) Leading pf Current
(b) Lagging pf Current
(c) Unity lpf Current
(d) Zero pf Current -
Answer:  (b) Lagging pf Current

The graph between on alternating quantity
and time is called
(a) Bar graph
(b) Pie chart
(c) Curve
(d) Waveform
Answer:  (d) Waveform

The Capacitive Reactance.........
(a) Decreases as frequency increases
(c) Increases as frequency increases
(b) Applies only to series RLC circuits
(d) Increases with the time constant
Answer:  (a) Decreases as frequency increases

Pure silicon crystal atoms contain............valance
electrons as a result of covalent bonding.
(a)  2
(b)  4
(c)  8
(d) 16
Answer: (c)  8

In case of electrical short circuit of a sub-circuit in domestic connection -
(a) Throw water to extinguish the fire   
(b) Switch of the power supply first
(c) Run to intimate the po wer house
(d) Do not act
Answer: (b) Switch of the power supply first

To work on line wire the electrician should use ….
(a) Goggles
(b) Gloves
(c) Helmet
(d) Watch
Answer:  (b) Gloves

To rescue a victim from electrical shock, one should use -
(a) Iron rod
(b) Copper rod
(c) Wooden rod
(d) Aluminum rod
Answer:  (c) Wooden rod

An isometric drawing present …..
(a) Top view
(b) Front view
 (c) Side view
(d) 3D - view
Answer: (d) 3D - view

The...................is the maximum amount of
reverse voltage which can be applied on a
diode before a breakdown point is reached.
(a) Breakdown Voltage
(b) Zener Voltage .
(c) Peak Inverse Voltage
(d) Threshold Voltage
Answer: (c) Peak Inverse Voltage

The magnitude of the induced EMF in a coil is
directly proportional to the change of flux
linkages. This law is known as...............
(a) Joule's law
(b) Faraday's second law of electromagnetic induction
(c) Coulomb's law
(d) Faraday's first law of electromagnetic induction
Answer: (b) Faraday's second law of electromagnetic induction

The...... .states that the polarity of the induced
voltage will oppose the change in magnetic
flux causing the induction.
(a) Joule's law
(b) Faraday's law
(c) Coulomb's law
(d) Lenz's law
Answer: (d) Lenz's law

The........,.........materials have permeability
 slightly less than'that of free space.
(a) Paramagnetic
(b) Diamagnetic
(c) Ferromagnetic
(d) Non-magnetic
Answer: (b) Diamagnetic

The............is the property of a magnetic material
which opposes the creation of magnetic flux in it. .
(a) Resistance
(b) Reluctance
(c) Inductance
(d) Conductance
Answer: (b) Reluctance

The flux density is measured in..................
(a)Tesia
(b) Weber
(c) Ampere-turn
(d) Maxwell
Answer: (a)Tesia

The no load p.f. of a transformer is around …..
(a) Unity
(b) 0.2 lagging
(c) 0.2 leading
(d) Zero

Answer: (b) 0.2 lagging

ELECTRICIAN THEORY SEMESTER-1 JULY 2018

ELECTRICIAN THEORY

SEMESTER-1

JULY 2018

When a capacitor is charged through a DC supply

source for infinite time, the final current through it is -

(a) Determined by the resistor

(b) Half of the initial current

(c) Infinite

(d) Zero

Answer :  (d) Zero

The Electronic grade solder has a Tin: Lead ratio of....
(a) 40:60

(b) 60:40

(c) 35:65

(d) 70:30

Answer :  (b) 60:40

Generally battery containers are made with -

(a) Hard Rubber

(b) Hard Plastic

(c) Polypropylene

(d) None of these

Answer :  (c) Polypropylene

The sheath is used in cables to.................

(a) Provide strength to the cable

(b) Provide proper insulation

(c) Prevent moisture from entering the cable

(d) Avoid chances of corrosion on strands

Answer :  (a) Provide strength to the cable

Load of an electrical network determines -

(a) Resistance

(b) Impedance

(c) Current

(d) Voltage

Answer : (c) Current

The capacitors are used across AC supply for.................

(a) Power improvement

(b) Power factor improvement

(c) Current improvement

(d) Voltage improvement

Answer : (b) Power factor improvement

Which of the following bulbs will have the least resistance?
(a) 230 V, 60 W

(b) 230 V, 100VV

(c) 115V.60W  

(d) 115V, 100W

Answer : (d) 115V, 100W

The phenomenon of induced magnetism lagging

behind the magnetizing force is known as ……

(a) Eddy currents

(b) Hysteresis

(c) Reluctance

(d) Permeability

Answer : (b) Hysteresis

The..............are tools used for bending, seaming and

forming of sheet metal that cannot be done on any

regular machine

(a) Snips

(b) Vices

(c) Stakes

(d) Centre Punch

Answer : (c) Stakes

In full wave rectifiers the current rating of each

diode is ...... to /of the DC output current.

(a) Equal

(b) Half

(c) Double

(d) Three times

Answer : (b) Half

The type of switch used in Staircase wiring is............

(a) Rotary Switch

(b) Push Button

(c) Two Way Switch

(d) One Way Switch

Answer : (c) Two Way Switch

When the core becomes magnetically saturated,

the increase in magnetic field strength H

(a) Enhances B drastically

(b) Decreases the permeability of the core

(c) Increases the permeability of the core

(d) Almost has no effect on magnetic induction B.

Answer : (d) Almost has no effect on magnetic induction B.

The nominal voltage of Lead-acid cell in an open

circuit is approximately…….
(a) 2 Volts

(b) 1.5 Volts

(c) 1,25 Volts 

(d) 2.5 Volts

Answer : (a) 2 Volts

While selecting a fixed value resistor, its main

specifications to be considered are....

(a) Voltage, wattage and tolerance in percents.

(b) Voltage, Current and Size

(c) Value in Ohms, Voltage and size

(d) Value in Ohms, Wattage and tolerance of its value

Answer : (d) Value in Ohms, Wattage and 

                       tolerance of its value

The specific gravity of a Lead-acid battery's

electrolyte is measured by
(a) Hydrometer

(b) Barometer

(c) Hygrometer

(d) Pyrometer

Answer : (a) Hydrometer

Power factor of a pure resistive circuit is.................

(a) Zero

(b) Lagging

(c) Leading

(d) Unity

Answer : (d) Unity

The function of the choke coil in fluorescent

lamp circuit is.......

(a) Only to limit the operating current

(b) Only to produce starting voltage impulse

(c) To produce starting voltage impulse and to

      limit the operating current *

(d) To limit the heating cuitent of filaments

Answer : (c) To produce starting voltage impulse

                      and to limit the operating current

AC mains supply in India has the frequency of..........

(a) 100 Hz

(b) 60Hz

(c) 50 Hz

(d) 40Hz

Answer : (c) 50 Hz

The fixed value Carbon Resistors are generally

not more than......Watts.

(a) 10

(b) 6

(c) 4

(d) 2

Answer : (d) 2

In an Inductive AC circuit, current.,
(a) Lags behind the voltage by 180°
(b) Leads the Voltage by 90u
(c) Lags behind the Voltage by 90°

(d) Is in phase with the Voltage

Answer : (c) Lags behind the Voltage by 90°

In a simple circuit consisting of a resistor of value R,

when voltage V is kept constant, then
the current.,................

(a) I is a directly proportional to R

(b) I=R

(c) I is inversely proportional to R

(d) I is constant irrespective of changes in R

Answer : (c) I is inversely proportional to R

The MCB's working is based on.........................

(a) Thermal operation      

(b) Thermal and Magnetic operations

(c) Magnetic operation

(d) Simple Mechanical Switching operation

Answer : (b) Thermal and Magnetic operations

The tripping time of ELCBs is usually less than.........

(a) 30 ms

(b) 80ms
(c) 100 ms

(d) 200 ms

Answer :  (a) 30 ms

Which of the following materials is a good Insulator?
(a) Aluminium

(b) Copper

(c) Porcelain 

(d) Silver

Answer: (c) Porcelain 

Which of the following materials is a good conductor?
(a) Mica

(b) Copper

(c) Rubber

(d) Ebonite

Answer:  (b) Copper

The electrolyte used in Aluminum anodizing is dilute...........

(a) Nitric acid

(b) Aluminum sulphate solution

(c) Hydrochloric acid

(d) Sulphuric acid

Answer: (d) Sulphuric acid

The positively charged ions are called.................

(a) Cations

(b) Atoms

(c) Anions

(d) Neutrons

Answer: (a) Cations

The..........of a substance is the amount deposited

on the Electrode on passing a steady electric current

of one ampere for One second through its solution.

(a) Equivalent weight

(b) Atomic weight

(c) Electro chemical equivalent

(d) Chemical equivalent

Answer: (c) Electro chemical equivalent

The............. circuit is usually operated by

adjusting the variable resistor until no current

flows in the ammeter.

(a) Resistors in parallel

(b) Resistors in series

(c) Wheatstone bridge

(d) Feedback

Answer: c) Wheatstone bridge

Certain materials normally behave as insulators

but allow for more valence electrons to be

made available by thermal energy.

These elements are known as.........

(a) Semiconductors

(b) Conductors

(c) Insulators

(d) Conduction band

Answer: (a) Semiconductors

The...................has a hammer face which is

used to drive in nails and the other end is

used for pulling out nails from the wood.

(a) Mallet       

(b) Claw Hammer

(c) Ball Pen Hammer

(d)Axe

Answer: (b) Claw Hammer

An electrical component with resistance and

inductance elements with draw ……
(a) Leading pf Current

(b) Lagging pf Current

(c) Unity lpf Current

(d) Zero pf Current -

Answer:  (b) Lagging pf Current

The graph between on alternating quantity

and time is called
(a) Bar graph

(b) Pie chart

(c) Curve

(d) Waveform

Answer:  (d) Waveform

The Capacitive Reactance.........

(a) Decreases as frequency increases
(c) Increases as frequency increases

(b) Applies only to series RLC circuits
(d) Increases with the time constant

Answer:  (a) Decreases as frequency increases

Pure silicon crystal atoms contain............valance

electrons as a result of covalent bonding.

(a)  2

(b)  4

(c)  8

(d) 16

Answer: (c)  8

In case of electrical short circuit of a sub-circuit in domestic connection -

(a) Throw water to extinguish the fire       

(b) Switch of the power supply first

(c) Run to intimate the po wer house

(d) Do not act

Answer: (b) Switch of the power supply first

To work on line wire the electrician should use ….

(a) Goggles

(b) Gloves

(c) Helmet

(d) Watch

Answer:  (b) Gloves

To rescue a victim from electrical shock, one should use -
(a) Iron rod

(b) Copper rod

(c) Wooden rod

(d) Aluminum rod

Answer:  (c) Wooden rod

An isometric drawing present …..
(a) Top view
(b) Front view

 (c) Side view

(d) 3D - view

Answer: (d) 3D - view

The...................is the maximum amount of

reverse voltage which can be applied on a

diode before a breakdown point is reached.

(a) Breakdown Voltage

(b) Zener Voltage .

(c) Peak Inverse Voltage

(d) Threshold Voltage

Answer: (c) Peak Inverse Voltage

The magnitude of the induced EMF in a coil is

directly proportional to the change of flux
linkages. This law is known as...............

(a) Joule's law

(b) Faraday's second law of electromagnetic induction

(c) Coulomb's law

(d) Faraday's first law of electromagnetic induction

Answer: (b) Faraday's second law of electromagnetic induction

The...... .states that the polarity of the induced

voltage will oppose the change in magnetic

flux causing the induction.

(a) Joule's law

(b) Faraday's law

(c) Coulomb's law

(d) Lenz's law

Answer: (d) Lenz's law

The........,.........materials have permeability

 slightly less than'that of free space.

(a) Paramagnetic

(b) Diamagnetic

(c) Ferromagnetic

(d) Non-magnetic

Answer: (b) Diamagnetic

The............is the property of a magnetic material

which opposes the creation of magnetic flux in it. .

(a) Resistance

(b) Reluctance

(c) Inductance

(d) Conductance

Answer: (b) Reluctance

The flux density is measured in..................

(a)Tesia

(b) Weber

(c) Ampere-turn

(d) Maxwell

Answer: (a)Tesia

The no load p.f. of a transformer is around …..

(a) Unity

(b) 0.2 lagging

(c) 0.2 leading

(d) Zero

Answer: (b) 0.2 lagging