W/M S 2

july 2017 sem 2 wireman theory
Which of the following instrument can be used to measure only DC?
(a) M-C. instrument (b) M.I. instrument
(c) Induction t>pe instrument (d) None of these

The internal resistance of an ammeter is —
(a) Zero (b) Very low   (c) Very high (d) Infinite

The moving iron type voltmeter and ammeter are suitable to measure the potential Difference and current in ..............
(a) A.C. circuit only (b) D.C. circuit only (c) Both (a) & (b) (d) None of these

Ammeter and voltmeter come under the categogy of................
(a) Indicating instruments (b) Recording instrument
(c) Integrating instrument (d) Standard instrument

The resistance of a voltmeter as compared to an ammeter is..............
(a) Very low (b) Equal  (c) Very high (d) Equal to twice

Ohm meter is ............
(a) A meter to record ohm (b) Used to measure resistance
(c) Combination of ohm and meter    (d) An indicating instrument

In a moving iron type ammeter the coil has ..............
(a)Large number of turn of thick wire
(b) Large number of turn of thin wire
(c) Few turns of thin wire
(d) Few turns of thick wire

A meggar is basically a ..........
(a) Moving iron type mstrument        b Movine coil type instrument
 (c) Hot wire instrument    (d) Electrolytic instrument

Which is the integrating instrument ?
(a) Volt meter   (b) Energy meter   (c) Watt meter  (d) Power factor meter

Maximum current measure by the clip on ammeter

(a) 700 amp.
(c) 800 amp.
(b) 500 amp.
(d) 1000 amp.

Volt meter should be very high resistance so that-
(a) Its range is high
(b) Its accuracy is high .
(c) It may draw current minimum possible
(d) Its sensitivity is high

The wattmeter which cannot be used on D .C. circuit is-

(a) Thermal wattmeter
(c) Induction wattmeter

(b) Electrostatic wattmeter
(d) Electro - dynamic wattmeter

The induction type single phase energy meter is -

(a) An ampere-hour meter
(c) A watt meter
(b) A watt hour meter
(d) None of these

The burden of current transformer is expressed in -

(a) Volt - ampere rating
(b) Current and voltage of secondary winding
(c) Current rating of secondary winding
(d) Watt rating

instrument current transformer is used to operate

(a) Volt meter d) Ammeter
(c) Ohm meter (b) Watt meter

instrumerrt potential transformer is used to operate..

(a) Volt meter d) Ammeter
(c) Ohm meter (b) Watt meter

C.T.S . stands for -
(a) Calcutta tramway service
(c) Current trashing system
(b) Cab tyre sheathed
(d) None of these

As per I.E. rule medium voltage line is-

(a) 0 to 230 volt
(c) 650 to 1000 volt
(b) 230 to 650 volt
(d) above 1000 volt

Which wiring system is inside of watt?
(a) P.V.C. wiring (b) Batten wiring
(c) Concealed wiring (d) Pipe wiring

In house wiring all bulbs fans are connected in -
(a) Series (b) Series - parallel
(c) Parallel   ' (d) All of these

Green coloured cable indicated that-
(a) Phase line (b) Neutral line
(c) Ok line (d) Earthing connection

According to I.S.L the maximum power load in a sub - circuit should not be more than -

(a) 1000 w or two points (b) 2000 w or two points
(c) 3000 w or four points (d) 500 w or one point

Fan point is fixed at the ground level to height of -
(a)2.75mtr. ' (b)2.44mtr.
(c)1.52mtr. .(d) 2.13 mtr.

Light point is fixed at the ground level to height of -
(a) 2.75 mtr. (b) 2.5 mtr.
(c)2.13mtr. . (d) 1.8 mtr.

Surface conduit wiring in saddle to saddle fixed on wall between the distances of the length -
(a) 1 mtr. (b) 3 mtr.
(c)2mtr. (d)5mtr.

Earth connection can be available from -
(a) Pole / Ground (b) Meter
(c) Fuse (d) Switch Board

Red colour wire known for-
(a) Earth (b) Phase
(c) Neutral (d) Insulated wire

One of following is not a current conductor -
(a) Aluminium (b) Silver
(c) Plastic (d) Copper

Refrigerator, Air conditioner, Microwave oven, washing machine need socket / plug with
minimum the capacity -
(a) 16 amp. (b) 2.5 amp.
(c) 6 amp. (d) 10 amp.

Which, material is used for wiring continuous bus bar?
(a) Aluminium (b) Copper
(c) Both (a) & (b) ' (d) None of thes.

For what voltage level are the screwed conduit circuit used -
(a) Less than 250 volt (b) For voltage between 250 volt
(c) For voltage above 600 volt (d) None of these

Which among these is a method of wiring?
(a) Joint box (b) Tee system

(c) Loop in system (d) All of these

Candela is the unit of ~
(a) Luminous flux (b) Luminous intensity
(c) Wavelength (d) None of these

The unit of luminous flux is -
(a) Steradian (b) Candela
(c) Lumen (d) Lux

Which of the following will need the highest level of illumination?
(a) Proof reading (b) Bed rooms
(c) Hospital wards (d) Railway plate forms

Which bulb operates on lowest power?
(a) Night bulb (b) Neon bulb
(c) GLS lamp (d) Torch bulb

When a sodium vapour lamp is switched on, initially the colour is -
. (a) Pink (b) Yellow,
(c) Green (d)Blue

In a sodium vapour lamp the discharge is first started in the -
(a) Neon gas (b) Nitrogen gas
(c) Argon gas . (d) Krypton gas

A gas filled filament bulbs, the gas used is —
(a) Oxygen (b) Helium
(c) Nitrogen (d) Ozone

In fluorescent tube circuit choke acts -
(a) Starter (b) Power factor improving device
(c) Source of heat (d) Current limiting device

Neon signs, helium is used for -
(a) Yellow colour (b) Green colour
(c) Red colour (d) Blue colour

In neon signs, neon with a mixture of mercury gives -
(a) Green colour   " (b) Blue colour
(c) Red colour (d) Yellow colour

Fluorescent tube can be operated on -
(a) A.C. Only (b) B.C. only
(c) Both A.C. & D.C. (d) None of these

U.P.S. stands for
(a) Universal power supply (b) Uninterrupted power supply
(c) Under power supply (d) None of these

Laser printer is -
(a) Character printer (b) Line printer
(c) Page printer (d) None of these

Combination of two or more networks are called —
(a) Internet work (b) W.A.N.
(c)MA.N. (d) L.A.N.

Index hole is related to -
(a) Hard disk (b) Flopy disk
(c) Printer (d) C.P.U.

Word RAM. stands for -
(a) Random access memory (b) Read access memory
(c) Read arithmetic memory (d) Random arithmetic memory

Indentify the network hardware of a home network -
(a) Access point (b) Nic card
(c) Analog modem (d) Fire wire

Which of the following is not a network hardware?
(a) Network switch (b) Bridge
(c) Print server (d) Network interface card

Wireman theory sem 2  july 2015 questions 

Which fire extinguisher is suitable for a live electrical fire?
A Halon    B Water    C Foam    D Liquid chemical

You have taken permit to work on a over head line and the overhead line switched 'off. Before undertaking the repair work on the OH line, you have to
A  equip yourself with insulated gloves
B  earth the line conductors
C  measure the line to ground insulation resistance
D  earth metai O.H line poles

Which artificial resuscitation method is suitable to the victim, whose mouth closed tightly?
A  Schafer's method    B  Mouth to mouth method
C  Nelson's Method    D  Holgen- Nelson Method

There are several factors are caused for electric shocks. What is the prime reasons for seventy of electric shock?
A  The magnitude of voltage is more
B  The magnitude of current and duration of contact
C  The magnitude of the body resistance is high
D  The magnitude of the load current of the circuit

What is the another name of single ended open jaw adjustable spanner?
A  Double ended spanner    B  Monkey wrench
C  Ring spanner                  D  Socket (box) spanner

Which type of Insulating tapes are available in sheets and rolls and used for motor connecting leads?
A  Varnished cambric tapes   B  Rubber tape   C  Friction tape    D  PVC tape

A solid substance (conductor) or an insulated conductor subjected to tensile stress with or without screen is called..............
A cable     B core    C wire    D insulating tape

If the cable contains one or more cores each formed as a group of wires, having small diameter is known as...............
A cable  B wire C flexible cable  D armoured cable

As per NEC, the phase apparatus (output) A.C system in Alpha-numeric notation is represented as...................
A)  U L2> L3, N     B)  R, Y. B, N     C)  A, B, C, N   D)  U. V, W, N

Though four branch circuits are planned for a domestic installation, only one cable was connected from the four circuits to the neutral link. This wiil result in.........................
A  all lamps give more than normal brightness   B  over loading of the phase cable
C  saving of cable for the customer                     D  neutral conductor gets over heated

As per IS recommendations, the distribution boards should not be fixed at a height not more than a certain value from floor level. What is this height?
A 1.0 metre    B 1.3 metre    C 2.0 metre    D 2.25 metre

Normal current capacity of a certain cable is 16 Amperes. If the circuit is protected by the course excess current protection, then the current capacity of the cable will be....................
A 12 A     B 13A    C 16A   D 20 A

The main switch is used in single phase supply is to be provided with..............
A  fuse in both line and neutral
B  a fuse in the line and a link in the neutral
C  a link in the line and a fuse in the neutra!
D  thicker fuse wire in the phase and thinner fuse wire in the neutral

What is the name of the material used for harnessing cables while making wiring connection of motor?
A  P.V.C saddles      B  P.V.C straps      C  P.V.C trays     D  P.V.C casting

For finding the earth resistance of an earth electrode 20v test voltage is used. Four tests are conducted under different distance / position of spikes. Current measured in each test is 3.8A, 1.9A,2.6Aand3.1A Which one of the calculated value of resistance to be considered?
A Lowest resistance value        B Hi&hest resistance value
C Average of the four values    D Average of highest and lowest values

Which device is the examples for coarse excess current protection?
A MCB   B HRC    C Cartridge fuse    D Rewirablefuse

The fusing factor for HRC fuse is............
A 2.0   B 1.7   C 1.4   D 1.1

The main advantage of concealed wiring than the surface conduit wiring is that..................
A it requires less material   B fault location and rectification is easy
C installation cost is less D inspection more easy

The only wiring which can be taken through shortest route in the roof and requires less right angle bends is......................
A casing and capping       B batten wiring
C conduit surface wiring   D conduit concealed wiring

In wiring installation system tree system is most suitable for.....................
A  multi-storey building             B  single storey building
C  guest house accommodation  D  multi room bungalows

The leakage current flowing in an installation is due to................
A  improper earthing    B high earth loop impedance  C  insulation failure   D  low earth resistance

What is the purpose of Earth leakage circuit breaker in building wiring  installation?
A It protects the appliances from excess current
B It prevents the waste of electrical energy consumption
C It stabilises the supply voltage
D It protects the energy meter from short circuit

For pipe earthing the minimum length of pipe electrode should not be less than........................
A  2.0 m    B  2.5 m   C  3.0 m  D 3.5 m

For plate earthing, the size of the plate should not be less than..................
A  600 mm x 600 mm   B 400 mm x 400 mm  C 300 mm x 300 mm  D 200 mm x 200 mm

What is the name of the temperature regulating component of an Automatic electric iron?
A Pressure plate    B Thermostat   C Solid plate   D Heating element

The purpose of terminal connectors used to...........................
A divide into number of branch circuits
B provide earth connecting of the wiring system
C extend the length of the wire without jointing
D provide the neutral connections of the wire

The ceiling fan makes noise during running due to....................
A defective or leaky capacitor                  B  open in regulator resistor /switch
C worn out bearing and absence of grease    D  low applied voltage

The capacitor used in the fan motor is to be connected is.....................
A  series to the starting winding   B  parallel to the starting winding
C  series to the main winding       D  parallel to the main winding

As per BIS the measured insulation resistance of any wiring installation should not be less than...............
A 100 ohm    B 1000 ohm     C 100 k.ohm    D 1000 k.ohm

The height of the bottom of switch board installed from the floor shall be not less than.............
A 900 mm (3 feet)      B 1200 mm (4 feet)
C 1350mm (4.5 feet)   D 1500 mm (5 feet)

Equipment earthing is necessary to give protection against....................
A  voltage fluctuation                      B  over loading
C  the danger of electric shocks       D  the high temperature of the conductors

The earth tester works on the principles of.......................
A potential dividing method   B fall of potential method
C fall of resistance method      D current dividing method

Which type of distribution system is suitable for flats and other commercial buildings which is continued through out the height of the building?
A  Bus bar chamber                   B  Raising mains
C  Vertical distribution mains    D  Bare conductors in trunk age

As per IE rules, the voltage at the point of commencement of supply in the case of high or Extra high voltage, shall not vary more than..............
A 12.5 percentage    B 10.0 percentage   C 5.0 percentage  D 2.5 percentage

The clearance between the conductors of opposite polarity or phase and between the conductors shall be at least.......................
A  5.0 cm    B  3.5 cm   C  2.5 cm  D  2.0 cm

The cross sectional area of copper conductor for power wiring shall be not less than............
A   0.5 mm2    B   1.15 mm2    C  1.5 mm2  D  2.5 mm2

The material is used in an electric oven as heating element is.....................
A copper   B brass   C eureka    D nichrome


The advantage of moving coil permanent magnet type instrument is-
a) Law power consumption
b) No hysteresis loss
c) Efficiency eddy current damping
d) All of these

The internal resistance of an ammeter is-
a) Zero
b) Very low
c) Very high
d) Infinite

The moving iron type voltmeter and ammeter are suitable to measure the potential difference and current in-
a) A.C. circuit only b) D.C. circuit only
c) Both a.c. and d.c. circuits
d) None of these

Ammeter falls under the category of-
a) Indicating instruments
b) Recording instrument
c) Integrating instruments
d) Standard instrument

In moving iron type instrument because of hysteresis in the iron parts of the moving   system, the readings are-
a) Higher on descending value but lower on ascending values
b) Higher on ascending values but lower on descending values
c) Higher on both ascending as well as descending values
d) Lower on both ascending as well as descending values

Ohm meter is-
a) A meter to record ohm
b) Used to measure resistance
c) Combination of ohm and meterd) An indicating instrument

In a moving iron type ammeter the coil has-
a) Large number of turns of thick wire
b) Large number of turns of thin wire
c) Few turns of thin wire
d) Few turns of thick wire

Volt meter resistivity is defined
a) Reciprocal of full scale. deflection current
b) Volt per ohm
c) Ohms per volt
d) It is degree of sensitiveness to impulse change

Which of the following instrument is undesirable for measurement of AC value?
a) Moving iron repulsion type
b) Moving iron attraction type
c) Dynamometer type
d) Permanent magnet moving coil type

Maximum current measured by the clip on ammeter is -
a) 700 Amp
b) 500 Amp
c) 800 Amp
d) 1000 Amp

For the measurement of voltage and current in the ratio frequency range, suitable instrument is-
a) Moving iron type
b) Moving coil type
c) Electro thermic type
d) Electrostatic type

The wattmeter which cannot be used on D.C. circuit is-
a) Thermal wattmeter
b) Electrostatic wattmeter
c) Induction wattmeter
d) Electro — dynamic wattmeter

In a megger when not in operation, the needle shows a resistance of-
a) Zero ohm
b) 100 ohm
c) 555 ohm
d) Infinity

The resistance of the shunt for an ammeter is usually of the order of-
a) 1000 ohm and above
b) 100 ohm and above
c) Less than 100 ohm
d) Less then 1 ohm

Instrument current transformer is used to operate -
a) Volt meter
b) Watt meter
c) Ohm meter
d) Ammeter

Vibrating reeds are employed in-
a) Frequency meter
b) Power factor meter
c) Synchroscope
d) Megger

Vibrating reed frequency meter operates on the principle of-
a) Phenomena of electrical resonance
b) Phenomena of mechanical resonance
c) Variation of impedance of an inductive coil circuit with the variation in supply frequency
d) None of these

A Weston frequency meter is a-
a) Dynamometer type instrument b) Moving coil instrument
c) Moving iron instrument 
d) Induction instrument

Which wiring system is inside of wall?
a) P.V.C. wiring
b) Batten wiring
c) Concealed wiring  
d) Pipe wiring

In house wiring all lighting switch are of capacity rating of -
a) 6 amp.
b) 16 amp.
c) 32 amp.
d) None of these

Green coloured cable indicates -
a) Phase line
b) Neutral line
c) OK line
d) Earthing connection

According to I.S.I. the maximum power load in a sub — circuit should not be more than-
a) 1000 W or two points
b) 2000 W or two points
c) 3000 W or four points
d) 500 W or one point

What is the maximum number of lighting points that can be connected in a circuit?
a) 10 b) 05 c) 08 d) 12

Light point is fixed from the ground level to height of-
a) 2.75 mtr.
b) 2.5 mtr.
c) 2.13 mtr.
d) 1.8 mtr.

Which type of wiring is done in workshop?
a) Conduit pipe wiring
b) Cleat wiring
c) Batten wiring
d) L.C.C. wiring

Earth connection can be available from-
a) Pole/Ground  
b) Meter
c) Fuse
d) Switch Board

Red colour wire is used as -
a) Earth wire
b) Phase wire
c) Neutral wire
d) Insulated wire

Cleat wiring is used for-
a) Temporary lighting at dry places
b) Permanent lighting at dry places
c) Both used (a) and (b)
d) None of these

Refrigerator, Air conditioner, Microwave oven, washing machine :need socket/plug with the minimum capacity of
a) 16 amp.
b) 2.5 amp.
c) 6 amp.
d) 10 amp.

Which material is used for wiring continuous busbar?
a) Aluminum
b) Copper
c) Both (a) and (b)
d) None of these

For what voltage level are the screwed conduit circuit used-
a) Less than 250 volt
b) For voltage between 250 volt- 600 volt
c) For voltage above 600 volt
d) None of these

Which among these is a method of wiring?
a) Joint box  
b) Tee system
c) Loop in system
d) All of these

An electric bulb can work from-
a) D.C. supply only
b) A.C. supply only
c) Battery Supply only
d) Al of these

Lux is a unit of illumination-
a) It is equal to foot candle 
b) It is less than foot candle
c) It is more than foot candle
d) It has no relation with foot candle

a) Is a form of electricity energy b) Is a form of heat energy
c) Consist of electromagnetic waves
d) Consist of shooting particles

Colour of light depends upon-
a) Wave length
b) Frequency of the wave
c) Speed of the light  
d) (a) and (b) above

One foot candle is equal to-
a) 1/10 lux
b) 10 lux
c) 100 lux  
d) 1000 lux

In a sodium vapour lamp, the discharge is first started in the-
a) Neon gas
b) Nitrogen gas
c) Argon gas
d) Krypton gas

Which lamp cannot sustain much voltage fluctuation?
a) Incandescent lamp
b) Fluorescent lamp
c) Mercury vapour lamp
d) Sodium vapour lamp

Filament lamp at starting will take current-
a) Equal to its full running current
b) Less than its full running current
c) More than its full running current
d) None of these

Illumination of one lumen per sq. meter is called-
a) Ft. candle
b) Candela
c) Lux
d) Lumen, meter

The following discharge lamp needs separate choke:
a) Fluorescent lamp
b) Sodium vapour lamp
c) Mercury vapour lamp
d) All of these lamps

Fluorescent tube is coated from inside with white powder. This is done to-
a) Change the colour of light emitted to white
b) Improve che appearance
c) Increase the light radiations due to secondry emission
d) Improve its life

Which part is the "brain" of the computer?
a) Monitor
b) CPU
c) RAM
d) ROM

The permanent memory built into your computer is called -
a) RAM
b) CPU
c) ROM
d) CD - ROM

Which of the following is not an input device?
a) Monitor
b) Keyboard
c) Joystick
d) Microphone

Which of the following is not an output device?
a) Monitor
b) Printer
c) Speaker
d) Keyboard

Which device allows your computer to talk to other computer over a telephone line as well as access the internet?
a) RAM
b) CD-ROM drive
c) Modem
d) Hard drive

Which of the following is an operating system you would be using on the computer?
a) Internet Explorer
b) Netscape
c) Microsoft word
d) Microsoft windows

Which of these is not a computer manufacturer?
a) IBM
b) Applé
c) Microsoft
d) Sun

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