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Electric Circuits

Electric Circuits
Capacitors for P.f correction are rated in

 KV.
 KVA.
 KVAR.
 KW.

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Electric Circuits
For the circuit shown below the value of R is adjusted so as to make the current in RL equal to zero. Calculate the value of R.

 1 Ω.
 4 Ω.
 2 Ω.
 3 Ω.

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Electric Circuits
Three capacitors each of capacity C are given. The resultant capacity (2/3) C can obtained by using them

 two in series and third in parallel across this combination.
 all in series.
 two in parallel and third in series with this combination.
 all in parallel.

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Electric Circuits
Common impurity in battery electrolyte is

 sodium chloride.
 iron.
 dust.
 lead sulfate.

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Electric Circuits
An electrical motor has rating of 10 MVA at 0.8 lag, represented as series RL circuit at a 50 MVA base. Find the impedance value?

 (2 + j4) pu
 (3 + j4) pu
 (4 + j3) pu
 (4 + j2 ) pu

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Electric Circuits
How many 200W / 220V bulbs connected in series across 220V supply will consume 100W?

 Not possible.
 2.
 1.
 4.

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