ELECTRIC CIRCUITS QUIZ

Total instantaneous power supplied by a 3 - φ AC supply to a balanced RL load is

pulsating with zero average.

constant.

pulsating with non zero average.

zero.

TRUE ANSWER : ?
YOUR ANSWER : ?

Internal heating of a capacitor is usually attributed to

leakage resistance.

electron movement.

plate vibration.

dielectric charge.

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For ideal tank circuit what is the value of dynamic impedance?

Both

0

∞

None of these

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The coils having self inductor of 10 mH and 15 mH have an effective inductor of 40 mH, when connected in series aiding. What will be the equivalent inductor if we connect them in series opposing

0 mH.

5 mH.

20 mH.

10 mH.

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YOUR ANSWER : ?

Basic cut set matrix consists of

2 branch.

any number of branches.

no branches.

one branch.

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A coil with negligible resistance has 50 V across it with 10 mA. The inductive reactance is

1000 ohms.

5000 ohms.

50 ohms.

500 ohms.

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When the battery is being charged, the terminal voltage decreases with

none of these.

increasing state of charge.

increasing charging rate.

increasing temperature.

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What is the frequency of domestic power in India?

70 Hz.

220 Hz.

60 Hz.

50 Hz.

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A balanced star connected load with impedance of 30j - 300 Ω is supplied from a 3 - phase, 4-wire, 173 V system, the voltages to neutral being 100j -900, 100j - 300 and 100j -1500 V. The current in neutral wire is

8.85 A.

50 A.

zero.

5 A.

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YOUR ANSWER : ?

In steady state condition capacitor acts as a

current source

open circuit

voltage source

short circuit

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