A cable has an insulation resistance of 1010 ohms. If the length is doubled, the

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Question
A cable has an insulation resistance of 10¹⁰ ohms. If the length is doubled, the insulation resistance will be
Options
A. 2 x 10¹⁰ ?
B. 0.5 x 10¹⁰ ?
C. 10¹⁰ ?
D. 4 x 10¹⁰ ?

Correct Answer

0.5 x 10¹⁰ ?

Explanation

Insulation resistance of cable is inversely proportional to length.

Networks Analysis and Synthesis problems

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Options
A. 1 A
B. 4 A
C. 10 A
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Options
A. 100 ?
B. 50 ?
C. 25 ?
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3. Which of the following is correct for a driving point functions?
Options
A. The real parts of all poles must be negative
B. The real parts of all poles and zeros must be negative
C. The real parts of all poles and zeros must be negative or zero
D. The real parts of all zeros must be negative

5. A capacitor is needed for an ac circuit of 230 V, 50 Hz the peak voltage rating of the capacitor should be
Options
A. 230 V
B. 0.5 x 230 V
C. 2 x 230V
D. 230/2V

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Options
A. 4 sin (4t - 45�)
B.
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Options
A. very small as compared to speed of light
B. equal to speed of light
C. almost equal to speed of light
D. half the speed of light

10. In an ac circuit, the maximum and minimum values of power factor can be
Options
A. 2 and 0
B. 1 and 0
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D. 1 and -1

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