ELECTRICIAN

ELECTRICIAN

How the capacity of battery is specified?
a)Volt
b) Watt
c) Volt Ampere
d) Ampere hour
Answer : d) Ampere hour

What is the name of defect that bending of plates in secondary cells?
a) Partial short
b) Local action
c) Buckling
d) Hard sulphation
Answer : c) Buckling
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Which type of transformer is used for high frequency application?
a) Ring core transformer
b) Ferrite core transformer
c) Silicon steel core transformer
d) Grain oriented core transformer
Answer : b) Ferrite core transformer

What is the function of conservator in transformer?
a) Allows expansion of oil level due to load variation
b) Transfers the heat to atmosphere
c) Allows to release internal pressure
d) Prevents the moisture entry
Answer : a) Allows expansion of oil level due to load variation

Which loss of transformer is determined by short circuit test?
a) Eddy current loss
b) Windage loss
c) Hysteresis loss
d) Copper loss
Answer : d) Copper loss
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Calculate the voltage regulation in percentage of the
transformer if the no load voltage is 240 volt and full load
voltage is 220 volt?
a) 7.2%
b) 9.09%
c) 8.71%
d) 8.3%
Answer :

What is the purpose of using laminated core in transformer?
a) Reduce eddy current loss
b) Reduce hysteresis loss
c) Reduce mechanical loss
d) Reduce copper loss
Answer : a) Reduce eddy current loss

What is the S.I unit of luminous intensity?
a) Lux
b) Lumen
c) Candela
d) Steradian
Answer : c) Candela
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Which force is required to move the pointer
from zero position in an indicating instrument?
a) Deflecting force
b) Controlling force
c) Air friction damping
d) Eddy current damping
Answer : a) Deflecting force

Which is the position to use the instrument
provided with gravity control?
a) Any position
b) Vertical position
c) Inclined position
d) Horizontal position
Answer :  b) Vertical position

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