The degree of the nodes 1, 2, 3, 4 is 2 3 2 for 1, 2, 3, and 3 for 4 all 3 Degre

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Correct Answer

all 3

Explanation

Degree of node is the no.of branch incident to it.

Networks Analysis and Synthesis problems

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1. 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.

2. A 3 phase balanced supply feeds 3 phase unbalanced load. Power supplied to the load can be measured by using
1. 2 wattmeter
2. one wattmeter
3. 3 wattmeter
Which of the above statements is correct?
Options
A. 1 and 2
B. 1 and 3
C. 2 and 3
D. 3 alone

3. A series RC circuit has R = 5 ? and C = 10 ?F. The current in the circuit is 5 sin 20000t. The applied voltage is
Options
A. 252 sin (20000t + 45�)
B. 252 sin (20000t - 45�)
C. 252 sin 20000t
D. 252 sin (20000t - 90�)

4. A sinusoidal voltage has peak to peak value of 100 V. The rms value is
Options
A. 50 V
B. 70.7 V
C. 35.35 V
D. 141.41 V

5. An RLC series circuit is underdamped. To make it overdamped, the value of R
Options
A. has to be increased
B. has to be decreased
C. has to be increased to infinity
D. has to be reduced to zero

6. 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

10. 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 ?

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