AUTOMATIC CONTROL SYSTEMS QUIZ

DC tachogenerator can be used in

Both A and B

Position control system

Speed control system

Neither A nor B

TRUE ANSWER : ?
YOUR ANSWER : ?

The poles with greater displacement from the real axis correspond to

Higher frequencies of oscillations

Stable response

Unbounded output

Lower frequencies of oscillations

TRUE ANSWER : ?
YOUR ANSWER : ?

Lag compensation permits a high gain at low frequencies.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

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

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

A conditionally stable system is stable for the value of gain between two critical values. It is unstable if

The gain is decreased below lower critical value

The gain is increased beyond upper critical value

Both A and B

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Bandwidth is proportional to speed of response.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

Integral control action

Removes offset

May lead to oscillatory response

Both (a) and (b)

Neither (a) nor (b)

TRUE ANSWER : ?
YOUR ANSWER : ?

The distance of poles from origin depends on

Damping ratio

Both A and B

Neither A nor B

Uqndamped natural frequency

TRUE ANSWER : ?
YOUR ANSWER : ?

In a simple on-off controller with differential gap, the magnitude of differential gap determines

The level of accuracy

Both (a) and (b)

The life of controller

Neither (a) nor (b)

TRUE ANSWER : ?
YOUR ANSWER : ?

In root locus analysis the breakaway and break in points

lie on the real axis

None of these

Either lie on the real axis or occur in complex conjugate pairs

Always occur in complex conjugate pairs

TRUE ANSWER : ?
YOUR ANSWER : ?

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