Electrical JE MCQs (UPPCl JE, SSC JE, PGCIL DIPLOMA TRAINEE,UPMRC JE, NHPC JE )
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Posts Archive
Varistors are ?
Repost from N/a
Which of the following statement is true ?
A galvanometer with low resistance in parallel is a voltmeter
A galvanometer with high resistance in parallel is a voltmeter
A galvanometer with low resistance in series is an ammeter β
A galvanometer with high resistance in series is an ammeter
Repost from N/a
The rating of a fuse wire is always expressed in ?
ampere-hours
ampere-volts
kWh
amperes β
Repost from N/a
For testing appliances, the wattage of test lamp should be ?
very low
low
high β
any value
Repost from N/a
A rheostat differs from potentiometer in the respect that it ?
has lower wattage rating
has higher wattage rating β
has large number of turns
offers large number of tappings
Repost from N/a
The number of electrons in the outermost orbit of carbon atom is ?
3
4 β
6
7
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Resistance of carbon filament lamp ...... as the applied voltage increases ?
increases
decreases β
remains same
none of the above
Repost from N/a
Insulating materials have the function of ?
preventing a short circuit between conducting wires
preventing an open circuit between the voltage source and the load β
conducting very large currents
storing very high currents
Repost from N/a
Electric current passing through the circuit produces ?
magnetic effect
luminous effect
thermal effect
all above effects β
Repost from N/a
Sparking occurs when a load is switched off because the circuit has high ?
resistance
inductance β
capacitance
impedance
Repost from N/a
Voltage dependent resistors are used ?
for inductive circuits
to suppress surges β
as heating elements
as current stabilizers
Repost from N/a
Varistors are ?
insulators
non-linear resistors β
carbon resistors
resistors with zero temperature coefficient
ln an electric kettle water boils in 10 minutes. It is required to boil the boiler in 5 minutes, using same supply mains ?
Two resistors are said to be connected in series when ?
Conductance : mho : : ?
When one leg of parallel circuit is opened out the total current will ?
Specific resistance of a substance is measured in ?
Repost from N/a
ln an electric kettle water boils in 10 minutes. It is required to boil the boiler in 5 minutes, using same supply mains ?
length of heating element should be decreased β
length of heating element should be increased
length of heating element has no effect on heating if water
none of the above
Repost from N/a
Conductance : mho : : ?
resistance : ohm β
capacitance: henry
inductance : farad
lumen : steradian
Repost from N/a
When one leg of parallel circuit is opened out the total current will ?
reduce
increase
decrease β
become zero
