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Electric Circuits

Electric Circuits
Which of following is the unit of magnetic flux density?

 Daraf.
 Tesla.
 Lumens.
 Weber.

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Electric Circuits
Purpose of using capacitor is / are

 increase p.f of inductive load circuit.
 all of these.
 effect DC filter in electronic circuit.
 to do phase split in AC 1 phase motor.

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Electric Circuits
A capacitor of 50 microfarad is connected in series with a resistance of 120 Ω. If above circuit is connected across 240 V, 50 Hz 1 - φ supply. Find the capacitive reactance?

 63.7 Ω.
 0.015 Ω.
 135.86 Ω.
 1.765 Ω.

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Electric Circuits
The Laplace Transform of a shifted unit step f (t) = U (t-a) is

 s(1-e-as).
 e-as.
 (e-as)/s.
 se-as.

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Electric Circuits
The term trickle charge is associated with

 lead acid battery.
 silver zinc battery.
 nickel iron battery.
 dry cell.

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Electric Circuits
For cadium plating electrolyte used is

 any of above.
 cadmium sulphate and sulphuric acid.
 sodium cyanide, cadmium and caustic soda.
 cadmium hexa metaphosphate.

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MORE MCQ ON Electric Circuits

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