ELECTRIC CIRCUITS QUIZ

A balanced delta connected load has an impedance of 9∠30o Ω per phase. What is the impedance per phase of its equivalent star?

27∠30o Ω

30∠30o Ω.

3∠30o Ω.

None of these

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A pole of driving point impedance is

zero voltage for a finite value of driving voltage.

zero current for a finite value of driving voltage.

zero voltage for a finite value of driving current.

zero current for a finite value of driving current.

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The value of supply voltage for 400 W, 4 Ω load is

40 V.

20 V.

200 V.

400 V.

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The life of a lead acid battery is expected to be

6 months.

1 year.

2 to 5 years.

10 to 15 years.

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Which of the following theorems can be applied to any network- linear or nonlinear, active or passive, time variant or time invariant?

Thevnin theorem.

Millman theorem.

Tellegen theorem.

Norton Theorem.

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What is time period T?

Time taken by an alternating quantity to complete one full cycle.

Time taken by an alternating quantity to complete the (+)ve half.

Time taken by an alternating quantity to reach the peak value.

Time taken by an alternating quantity to complete the (-)ve half.

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The electrical resistance of human body is around

25 ohms.

250 ohms.

5 ohms.

1000 ohms.

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The unit of electric field intensity is

N / Ampere.

N / C.

F / m.

F/ m2.

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A 100 μF capacitor supplied from 3 V source with a frequency of 50 Hz. The capacitive reactance is

15.92 Ω.

7.96 Ω.

63.68 Ω.

31.84 Ω.

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The switch S is the circuit shown in figure is ideal. If the switch is repeatedly closed for 1 ms and opened for 1 ms, the average value of i(t) is

0.5 mA.

0.25 mA.

0.35 mA.

1 mA.

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