Bode diagram are generated from output response of the system subjected to which of the following input?

According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is

A

0°

B

45°

C

90°

D

180°

Bode diagram is a plot of

A

Log (AR) vs. log (f) and (Φ) vs. log (f)

B

Log (AR) vs. f and log Φ vs.f

C

AR vs. log (f) and Φ vs. log (f)

D

None of these

In Bode plots the frequency at which two asymptotes meet is called corner frequency.

A

True

B

False

Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot.

A

True

B

False

Bode stability method uses __________ loop transfer function.

A

Open

B

Closed

C

Either A or B

D

Neither A nor B

In Bode plot, A.R. vs. w is plotted on a/an __________ graph paper.

A

Log-lag

B

Triangular

C

Ordinary

D

Semi-log

In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

A

Log-log

B

Ordinary

C

Semi-log

D

Triangular

Response of a system to a sinusoidal input is called __________ response.

A

Impluse

B

Unit step

C

Frequency

D

None of these

The e.m.f. generated by a shunt wound D.C. generator is E. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f. generated will be

A

$$\frac{{\text{E}}}{2}$$

B

2E

C

Slightly less than E

D

E

The initial response when tne output is not equal to input is called

A

Transient response

B

Error response

C

Dynamic response

D

Either of the above

Bode diagram are generated from output response of the system subjected to which of the following input?

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