CONTROL SYSTEM SET 14

CONTROL SYSTEM SET 14

1. For second order linear system, setting time is
a) 1/4 of the time constant
b) 1/2 of the time constant
c) 4 times the time constant
d) 2 times the time constant
 

Ans: (c)
 

2. System generally preferred is
a) Under damped
b) Critically damped
c) Over damped
d) Oscillatory
 

Ans: (a)
 

3. For unity damping factor, the system will be
a) Under damped
b) Critically damped
c) Over damped
d) Oscillatory
 

Ans: (b)
 

4. Second-derivative input signal adjust
a) Time constant of the system
b) Time constant and supress the oscillations
c) Damping of the system
d) Gail of the system
 

Ans: (b)
 

5. In the derivative error compensation
a) Damping decreases and setting time increases
b) Damping increases and settling time increases
c) Damping decreases and setting time decrease
d) Damping increases and setting time decreases
 

Ans: (d)
 

6. If for second order system damping factor is less than one, then system response will be
a) Under damped
b) Over damped
c) Critically damped
d) None of these
 

Ans: (a)
 

7. With feedback system sensitivity to parameter
a) Decreases
b) Increases
c) Becomes zero
d) Becomes infinite
 

Ans: (a)
 

8. In a closed loop system, source power is modulated with
a) Error signal
b) Reference signal
c) Actuating signal
d) Feed back signal
 

Ans: (a)
 

9. With feedback system, transient response
a) Decays constantly
b) Decays slowly
c) Decays quickly
d) Rises fast
 

Ans: (c)
 

10. Non-Linearity in the servo system due to saturation is caused by
a) Servo motor
b) Gear trains
c) Relays
d) None of these
 

Ans: (a)