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AC Fundamentals – 1 – 2

6. In an A.C. circuit power is dissipated in :

(a) resistance only
(b) inductance only
(c) capacitance only
(d) none of the above

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

7. The time constant of the capacitance circuit is defined as the time during which
voltage :

(a) falls to  36.8% of its final steady value
(b) rises to 38.6% of its final steady value
(c) rises to 63.2% of its final steady value
(d) none of the above

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

8. For a frequency of 200 Hz, the time period will be :

(a) 0.05 s
(b) 0.005 s
(c) 0.0005 s
(d) 0.5 s

Answer
Answer : (b)

Explanation
No answer description available for this question. Let us discuss.

9. Power factor of the following circuit will be unity :

(a) inductance
(b) capacitance
(c) resistance
(d) both (a) and (b)

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

10. Power factor of the following circuit will be zero :

(a) inductance
(b) capacitance
(c) resistance
(d) both (a) and (b)

Answer
Answer : (d)

Explanation
No answer description available for this question. Let us discuss.

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