AUTOMATIC CONTROL SYSTEMS QUIZ

Neither A nor B

Position control system

Speed control system

Both A and B

A family of circles

Either (a) or (b)

Neither (a) nor (b)

A family of straight lines

System for controlling antirocket missiles

Aqualing

Respiratory system of animal

Wind screen wiper

True

False

Voltage amplification

Power amplification

Frequency amplification

Current amplification

It is symmetric about -180°

(0 dB, -180°) point on Nichols chart represent critical Point (-1, 0)

M loci are centred about (0 dB, -180°) point

The frequency at intersection of G(j?) locus and M = +3 dB locus gives bandwidth of closed loop system

False

True

Phase margin alone

Either (a) or (b)

Gain margin alone

Both phase and gain margins

True

False

Gain margin is close to 1 or phase margin is zero

Gain margin is high

Gain margin is close to 1

Gain margin is high and phase margin is 180°