A capacitor stores 0.15C at 5 V. Its capacitance is 0.75 F 0.75 ?F 0.03 F 0.03 ?

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Question
A capacitor stores 0.15C at 5 V. Its capacitance is
Options
A. 0.75 F
B. 0.75 ?F
C. 0.03 F
D. 0.03 ?F

Correct Answer

0.03 F

Explanation

Q = CV or 0.15 = C(5) or C = 0.03 F.

Networks Analysis and Synthesis problems

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3. In the circuit of figure the voltage across capacitor when switch is closed at t = ? is
Options
A. 0 V
B. 20 V
C. very large
D. 7.5 V

4. The degree of the nodes 1, 2, 3, 4 is
Options
A. 2
B. 3
C. 2 for 1, 2, 3, and 3 for 4
D. all 3

5. The driving-point impedance Z(s) of a network has a pole-zero locations as shown in the figure. If Z(0) = 3, then Z (s) is
Options
A.
B.
C.
D.

6. The impedance of an RC series circuit is 12 ? at f= 50 Hz. At f= 200 Hz, the impedance will be
Options
A. more than 12
B. less than 3
C. more than 3 ? but less than 12 ?
D. more than 12 ? but less than 24 ?

7. In the series circuit shown in figure, for series resonance, the value of the coupling coefficient, K will be
Options
A. 0.25
B. 0.5
C. 0.1
D. 1

8. As compared to the number of network elements in Brune synthesis, the number of network elements Bott-and Duffin in realization is
Options
A. more
B. less
C. equal
D. any of the above

9. Two networks are cascaded through an ideal buffer. If t_d1 and t_d2 are delay times of network, the overall delay time is
Options
A. t_d1 + t_d2
B. t²_d1 + t²_d2
C. t_d1 + t_d2
D.

10. 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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