Top 80+ Solved Control Systems MCQ Questions Answer
Q. The band width, in a feedback amplifier.
a. remains unaffected
b. decreases by the same amount as the gain increase
c. increases by the sane saaaajajt as the gain decrease
d. decreases by the same amount as the gain decrease
Q. The transient response, with feedback system,
a. rises slowly
b. rises quickly
c. decays slowly
d. decays quickly
Q. The second derivative input signals modify which of the following ?
a. the time constant of the system
b. damping of the system
c. the gain of the system
d. the time constant and suppress the oscillations
Q. Which of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero ?
a. the system is relatively stable
b. the system is highly stable
c. the system is highly oscillatory
d. none of the above
Q. Due to which of the following reasons excessive bond width in control systems should be avoided ?
a. it leads to slow speed of response
b. it leads to low relative stability
c. noise is proportional to band width
d. none of the above
Q. In a stable control system backlash can cause which of the following ?
a. underdamping
b. overdamping
c. poor stability at reduced values of open loop gain
d. low-level oscillations
Q. In an automatic control system which of the following elements is not used ?
a. error detector
b. final control element
c. sensor
d. oscillator
Q. In a control system the output of the controller is given to
a. final control element
b. amplifier
c. comparator
d. sensor
Q. The capacitance, in force-current analogy, is analogous to
a. momentum
b. velocity
c. displacement
d. mass
Q. The temperature, under thermal and electrical system analogy, is considered analogous to
a. voltage
b. current
c. capacitance
d. charge
Q. In electrical-pneumatic system analogy the current is considered analogous to
a. velocity
b. pressure
c. air flow
d. air flow rate
Q. In liquid level and electrical system analogy, voltage is considered analogous to
a. head
b. liquid flow
c. liquid flow rate
d. none of the above
Q. The viscous friction co-efficient, in force-voltage analogy, is analogous to
a. charge
b. resistance
c. reciprocal of inductance
d. reciprocal of conductance