1. Which statement is not correct for open loop control system?
a) Simple construction and ease of maintenance
b) less expensive
c) disturbances cause errors
d) To maintain the required quality in the output, recalibration is not required
ans. d
2. In a feedback amplifier, the bandwidth
a) decreases by the same amount as the gain decrease
b) increases by the same amount as the gain decrease
c) decreases by the same amount as the gain increases
d) remains unaffected
ans. b
3. Introduction of negative feedback in a system does not lead to reduction in
a) bandwidth
b) distortion
c) instability
d) overall gain
ans. a
4. The sensitivity of a closed-loop system to gain changes and load disturbances depends upon
a) forward gain
b) loop gain
c) frequency
d) all of these
ans. d
5. In a feedback system the transient response
a) decays at a constant rate
b) gets magnified
c) decays slowly
d) decays more quickly
ans. d
6. The frequency and the domain are related through
a) laplace transform
b) fourier integral
c) laplace transform or fourier integral
d) laplace transform and fourier integral
ans. d
7. Error constants of system are a measure of
a) steady state response
b) transient-state response
c) relative stability
d) steady-state as well as transient response
ans. a
8. Static error coefficients are used as a measure of the effectiveness of closed-loop systems for specified
a) position input signal
b) velocity input signal
c) acceleration input signal
d) all of these
ans. d
9. Velocity error constant of a system is measured when the input to the system is
a) unit step function
b) unit ramp function
c) unit impulse function
d) unit parabolic function
ans. b
10. Bandwidth is used as means of specifying performance of a control system related to
a) relative stability of the system
b) the speed of response
c) the constant gain
d) all of these
ans. b
a) Simple construction and ease of maintenance
b) less expensive
c) disturbances cause errors
d) To maintain the required quality in the output, recalibration is not required
ans. d
2. In a feedback amplifier, the bandwidth
a) decreases by the same amount as the gain decrease
b) increases by the same amount as the gain decrease
c) decreases by the same amount as the gain increases
d) remains unaffected
ans. b
3. Introduction of negative feedback in a system does not lead to reduction in
a) bandwidth
b) distortion
c) instability
d) overall gain
ans. a
4. The sensitivity of a closed-loop system to gain changes and load disturbances depends upon
a) forward gain
b) loop gain
c) frequency
d) all of these
ans. d
5. In a feedback system the transient response
a) decays at a constant rate
b) gets magnified
c) decays slowly
d) decays more quickly
ans. d
6. The frequency and the domain are related through
a) laplace transform
b) fourier integral
c) laplace transform or fourier integral
d) laplace transform and fourier integral
ans. d
7. Error constants of system are a measure of
a) steady state response
b) transient-state response
c) relative stability
d) steady-state as well as transient response
ans. a
8. Static error coefficients are used as a measure of the effectiveness of closed-loop systems for specified
a) position input signal
b) velocity input signal
c) acceleration input signal
d) all of these
ans. d
9. Velocity error constant of a system is measured when the input to the system is
a) unit step function
b) unit ramp function
c) unit impulse function
d) unit parabolic function
ans. b
10. Bandwidth is used as means of specifying performance of a control system related to
a) relative stability of the system
b) the speed of response
c) the constant gain
d) all of these
ans. b
