Electronics and Communication Engineering - Networks Analysis and Synthesis

1. 

A series RLC circuit is supplied from a variable frequency ac source. The resonant frequency is ω0. The voltage across C is maximum at a frequency

A. equal to ω0
B. slightly less than ω0
C. slightly more than ω0
D. none of the above

Answer: Option B

Explanation:

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

2. 

The maximum phase difference between the applied voltage and current in a RLC series current with finite values of R, L, C, and f can be

A. less than 90°
B. less than 45°
C. 180°
D. 30°

Answer: Option A

Explanation:

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

3. 

If figure, I = 2A if R = 20 Ω. When R = 10 Ω current I is

A. 1 A
B. 2 A
C. 2.5 A
D. 3 A

Answer: Option B

Explanation:

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

4. 

A phasor is

A. a line representing the magnitude and direction of an alternating quantity
B. a line which represents the magnitude and phase of an alternating quantity
C. an instrument used for measuring phases of an unbalanced 3-phase load
D. a coloured tag or band for distinguishing between different phases of a 3-phase supply

Answer: Option B

Explanation:

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

5. 

The phase difference (jω - p1 )

A. phasor directed from p1 to jω
B. phasor directed from origin to p1
C. phasor directed from origin to jω point
D. phasor directed from jω to p1

Answer: Option A

Explanation:

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

1 2 3 4 5 6 7 8 9 10 Next »