ELECTRICIAN

ELECTRICIAN

Which error is caused by the incorrect position of
 instrument reading?
a) Device error
b) Human error
c) Influence error
d) Switching error
Answer :  a) Device error
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Which instrument is used to measure one
ohm and below one ohm resistance value
accurately?
a) Megohm meter
b) Shunt type ohm meter
c) Multimeter (analog)
d) Series type ohm meter
Answer :  b) Shunt type ohm meter
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What is the purpose of the 3 terminal provided in a advanced megohm meter?
a) Get higher ohmic values
b) Get accurate readings without oscillation
c) Pass the excess current to ground
d) Pass the excess voltage to ground
Answer :  b) Get accurate readings without oscillation

Which material is used to make heating element?
a) Silver
b) Copper
c) Nichrome
d) Aluminium
Answer : c) Nichrome

Which material is coated in tungsten electrode
of a fluorescent tube lamp?
a) Barium and stroatium oxide
b) Phosphor powder
c) Fluorescent powder
d) Silver oxide
Answer : a) Barium and stroatium oxide
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Which position MB type high pressure mercury
vapour lamps are operated?
a) Any position
b) Inclined
c) Horizontal
d) Vertical
Answer : a) Any position

What is the function of leak transformer in
high pressure sodium vapour lamp circuit?
a) Ignite the high voltage initially   
b) Reduce the working voltage
c) Increase the working voltage
d) Reduce the starting current
Answer : a) Ignite the high voltage initially
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How stroboscope effect in industrial twin tube light
fitting is reduced?
a) Connecting capacitor parallel to supply
b) Connecting capacitor in series with one tube light
c) Connecting capacitor in series with supply
d) Connecting two capacitors in series to each tube light
 Answer :

What is the function of stirrer motor in micro wave oven?
a) Draws cooling air inside
b) Revolves and reflects the electromagnetic energy
c) Exhausts the hot air outside
d) Spreads the heat uniformly
 Answer : b) Revolves and reflects the electromagnetic energy
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Which type of A.C single phase motor is used in food mixer?
a) Universal motor
b) Repulsion motor
c) Spl it phase motor
d) Shaded pole motor
Answer :  a) Universal motor

What is the minimum size of Aluminum earth
continuity conductor used in single phase domestic
wiring as per BIS?
a) 3Sq.mm
b) 3.5Sq.mm
c) 2.5Sq.mm
d) 1.5Sq.mm
Answer :  c) 2.5Sq.mm