The input signals to control systems are not known fully ahead of time, the characteristics of control system which suddenly strain a control system are:
a) Constant velocity and acceleration
b) Sudden shock
c) Sudden change
d) All of the mentioned
Q.2.
The characteristic equation of a control system is given by s(s+4)(s2+2s+s) + k(s+=What are the angles of the asymptotes for the root loci?
a) 0°, 180°, 300°
b) 0°, 120°, 240°
c) 60°, 180°, 300°
d) 120°, 180°, 240°
Q.3.
Feedback control system is basically ______________
a) Band pass filter
b) Band stop filter
c) High pass filter
d) Low pass filter
Q.4.
Which of the following is not a feature of a good control system?
a) Slow response
b) Sufficient power handling capacity
c) Good stability
d) Good accuracy
Q.5.
A control system is generally met with the time response specifications:
a) Damping factor
b) Setting time
c) Steady state accuracy
d) All of the mentioned
Q.6.
The open loop transfer function of a plant is given as, G(s) = 1/s2-If the plant is operated in unity feedback configuration, then the lead compensator that can stabilize the control system is:
a) 10(s+4)/(s+2)
b) 10(s+2)/(s+10)
c) 10(s+2)/(s+10)
d) 10(s-1)/(s+2)
Q.7.
Controllers play which of the following role in the control system?
a) They act on the error signal coming out of the summing junction and output a suitable to the actuator
b) They try to reduce steady state error optimizes overshoot
c) They amplify the signals going to the actuator
d) All of the mentioned
Q.8.
In control system excessive bandwidth is not employed because
a) It leads to slower time response
b) Noise is proportional to bandwidth
c) Noise is proportional to the square of the bandwidth
d) It leads to low relative stability
Q.9.
What is the relation between output response and input signal in closed loop system?
a) Nonlinear
b) Linear
c) Exponential
d) Parabolic
Q.10.
Which of the following is the input of a controller?
a) Signal of fixed amplitude not dependent on desired variable value
b) Desired variable value
c) Sensed signal
d) Error signal
Q.11.
Which of the following are the not characteristics of the closed loop systems?
a) It does not have the ability to control the system transient response
b) It does not involve I/O measurements
c) It reduces the sensitivity of plant-parameter variations
d) It does not compensate for disturbance
Q.12.
A control system whose step response is -0.5(1+e-2t) is cascaded to another control block whose impulse response is e-t. What is the transfer function of the cascaded combination?
a) 1/(s+1)s
b) 0.5/(s+1)(s+2)
c) 1/(s+2)(s+1)
d) 1/(s+3)
Q.13.
Effect of feedback on sensitivity is minimum in:
a) Closed loop control system
b) Open and closed loop control systems
c) Open loop control system
d) None of the mentioned
Q.14.
A particular control system yielded a steady state error of 0.for unit step input. A unit integrator is cascaded to this system and unit ramp input is applied to this modified system. What is the value of steady-state error for this modified system?
a) 0.15
b) 0.20
c) 0.25
d) 0.10
Q.15.
Sampling is necessary ____________
a) Non automated control system
b) Automated control system
c) In complex control system
d) Where high accuracy is required
Q.16.
Which of the motions in actuators are preferred?
a) Rotary
b) Stationary
c) Non-Stationary
d) Translator
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.