Test Bank For Automatic Control Systems, 9th Edition by
Farid Golnaraghi
,1. A transfer function of a system is a Laplace transform of its:
a) Square wave response
b) Step response
c) Ramp response
d) Impulse response
D
2. Laplace transform method has the advantage of:
a) Corporation of initial conditions in the very first step
b) Providing total solution more systematically
c) Providing solutions in frequency domain only
d) All the above
e) Both (a) and (b)
E
3. The transfer function of a system is used to determine:
a) The output for a given input
b) The type of the system
c) The input for a given output
d) The steady state gain
A
4. Transfer function of a control system depends on:
a) Initial conditions of input and output
b) System parameters alone
c) Nature of input
d) Nature of output
B
5. Bimetallic thermostat is __ Controller
a) Zero
b)One term
c)Two term
d) On-off
D
6. Two stator windings of the ac servo motors are oriented __ electrical degrees apart
a) 90
b) 60
c) 120
,d) 180
A
7. Which of the following is not true for an ac servo motor:
a) Has low inertia rotor
b) Is a single phase motor
c) Has slip torque characteristics as straight line with negative slope
d) Reference voltage frequency is high compared to signal frequency
8. A gyroscope operates on the principle of:
a) Law of conservation of energy
b) Law of conservation of momentum
c) Electro-mechanical conversion
d) Newton's third law of motion
B
9. AC Servo motor is basically a:
a) Universal motor
b) Capacitor motor
c) 2 phase induction motor
d) 3 phase induction motor
C
10. The output of synchro error detector is a:
a) Voltage signal of the receiver
b) Voltage signal of constant amplitude
c) Suppressed carrier modulated signal
d) Angular displacement of the control transformer rotor
C
Control Systems Objective MCQ Answers
1. An impulse function is a derivative of __ function
a) Parabolic
b) Step
c) Ramp
d) Linear
B
, 2. The required for the response to rise and stay within the tolerance band is called as:
a) Rise time
b) Pickup time
c) Settling time
d) Transient time
C
3. The time required for the response to rise from 10% to 90% of the final value for over damped
systems and 0 to 100% of the final value for under damped systems is called the:
a) Rise time
b) Pickup time
c) Settling time
d) Transient time
A
4. Control systems are normally designed with a damping factor:
a) Less than unity
b) Of unity
c) Of Zero
d) More than unity
A
5. A signal whose value changes from one level to other level in no time is known as __ signal
a) Impulse
b) Step
c) Ramp
d) Parabolic
B
6. The overshoot (an indication of the largest error between the actual and desired output) is the
ratio of:
a) Transient error to peak error
b) Dynamic error to peak error
c) Maximum overshoot to final desired value
d) None of the above
C
7. Error constants of the system are measure of:
a) Relative stability
b) Transient state response
Farid Golnaraghi
,1. A transfer function of a system is a Laplace transform of its:
a) Square wave response
b) Step response
c) Ramp response
d) Impulse response
D
2. Laplace transform method has the advantage of:
a) Corporation of initial conditions in the very first step
b) Providing total solution more systematically
c) Providing solutions in frequency domain only
d) All the above
e) Both (a) and (b)
E
3. The transfer function of a system is used to determine:
a) The output for a given input
b) The type of the system
c) The input for a given output
d) The steady state gain
A
4. Transfer function of a control system depends on:
a) Initial conditions of input and output
b) System parameters alone
c) Nature of input
d) Nature of output
B
5. Bimetallic thermostat is __ Controller
a) Zero
b)One term
c)Two term
d) On-off
D
6. Two stator windings of the ac servo motors are oriented __ electrical degrees apart
a) 90
b) 60
c) 120
,d) 180
A
7. Which of the following is not true for an ac servo motor:
a) Has low inertia rotor
b) Is a single phase motor
c) Has slip torque characteristics as straight line with negative slope
d) Reference voltage frequency is high compared to signal frequency
8. A gyroscope operates on the principle of:
a) Law of conservation of energy
b) Law of conservation of momentum
c) Electro-mechanical conversion
d) Newton's third law of motion
B
9. AC Servo motor is basically a:
a) Universal motor
b) Capacitor motor
c) 2 phase induction motor
d) 3 phase induction motor
C
10. The output of synchro error detector is a:
a) Voltage signal of the receiver
b) Voltage signal of constant amplitude
c) Suppressed carrier modulated signal
d) Angular displacement of the control transformer rotor
C
Control Systems Objective MCQ Answers
1. An impulse function is a derivative of __ function
a) Parabolic
b) Step
c) Ramp
d) Linear
B
, 2. The required for the response to rise and stay within the tolerance band is called as:
a) Rise time
b) Pickup time
c) Settling time
d) Transient time
C
3. The time required for the response to rise from 10% to 90% of the final value for over damped
systems and 0 to 100% of the final value for under damped systems is called the:
a) Rise time
b) Pickup time
c) Settling time
d) Transient time
A
4. Control systems are normally designed with a damping factor:
a) Less than unity
b) Of unity
c) Of Zero
d) More than unity
A
5. A signal whose value changes from one level to other level in no time is known as __ signal
a) Impulse
b) Step
c) Ramp
d) Parabolic
B
6. The overshoot (an indication of the largest error between the actual and desired output) is the
ratio of:
a) Transient error to peak error
b) Dynamic error to peak error
c) Maximum overshoot to final desired value
d) None of the above
C
7. Error constants of the system are measure of:
a) Relative stability
b) Transient state response
