AUTOMATIC CONTROL SYSTEMS QUIZ

For any transfer function, the constant phase angle loci are

A family of straight lines

A family of circles

Neither (a) nor (b)

Either (a) or (b)

TRUE ANSWER : ?
YOUR ANSWER : ?

The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

A lag compensator

Improves steady state behavior and preserves the transient response of the system

Speeds up the transient response of the system

Improves steady state behavior and speeds up the transient response of the system

Improves steady state behavior of the system

TRUE ANSWER : ?
YOUR ANSWER : ?

Bandwidth is proportional to speed of response.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

For type 1 system the velocity lag error is

Independent of gain constant

Inversely proportional to gain constant

Inversely proportional to bandwidth of system

Directly proportional to gain constant

TRUE ANSWER : ?
YOUR ANSWER : ?

M circles are symmetrical with respect to

M = 1 straight line and imaginary axis

M = 1 straight line

M = 1 straight line and real axis

Real and imaginary axis

TRUE ANSWER : ?
YOUR ANSWER : ?

If the poles lie in second quadrant, damping ratio is

less than 1

more than 1

zero

1

TRUE ANSWER : ?
YOUR ANSWER : ?

The permanent magnet field system of brushless dc servo- motor is generally on

Rotor

Either (a) or (b)

Partly on stator and partly on rotor

Stator

TRUE ANSWER : ?
YOUR ANSWER : ?

Transport lag usually exists in

Thermal, hydraulic and pneumatic systems

Pneumatic systems

Thermal systems

Hydraulic systems and thermal systems

TRUE ANSWER : ?
YOUR ANSWER : ?

The sensor generally used in incremental optical encoder is

LED

LCD

Either (a) or (b)

Photodiode

TRUE ANSWER : ?
YOUR ANSWER : ?