In a series ac circuit a voltage of 20 V at 25 Hz causes a current of 0.20 A, while the same voltage at 75 Hz causes a current of 0.12 A. The circuit consists of

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Question: In a series ac circuit a voltage of 20 V at 25 Hz causes a current of 0.20 A, while the same voltage at 75 Hz causes a current of 0.12 A. The circuit consists of
[A].

R and C in parallel

[B].

R and C in series

[C].

R and L in series

[D].

either (a) or (b)

Answer: Option B

Explanation:

As f increases impedance increases and current decreases in RL circuit.

Marathon is to race as hibernation is to

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Question: Marathon is to race as hibernation is to
[A].

winter

[B].

bear

[C].

dream

[D].

sleep

Answer: Option D

Explanation:

A marathon is a long race and hibernation is a lengthy period of sleep. The answer is not choice a or b because even though a bear and winter are related to hibernation, neither completes the analogy. (Choice c) is incorrect because sleep and dream are not synonymous.

Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at

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Question: Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at
[A].

high vacuum

[B].

zero pressure

[C].

0°K

[D].

earth’s centre

Answer: Option B

Explanation:

No answer description available for this question.