MCQs on Control System Part-3

Control System

1. The temperature, under thermal and electrical system analogy, is considered analogous to______.

(a) voltage

(b) current

(c) capacitance

(d) charge

(e) none of the above

2. In electrical-pneumatic system analogy, the current is considered analogous to______.

(a) velocity

(b) pressure

(c) air flow

(d) air flow rate

3. 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

4. The viscous friction co-efficient, in force-voltage analogy, is analogous to_______.

(a) charge

(b) resistance

(c) reciprocal of inductance

(d) reciprocal of conductance

(e) none of the above

5. In force-voltage analogy, velocity is analogous to_________.

(a) current

(b) charge

(c) inductance

(d) capacitance

6. In thermal-electrical analogy, charge is considered analogous to________.

(a) heat flow

(b) reciprocal of heat flow

(c) reciprocal of temperature

(d) temperature

(e) none of the above

7. Mass, in force-voltage analogy, is analogous to_____.

(a) charge

(b) current

(c) inductance

(d) resistance

8. The transient response of a system is mainly due to__________.

(a) inertia forces

(b) internal forces

(c) stored energy

(d) friction

9. _____signal will become zero when the feedback signal and reference signs are equal.

(a) Input

(b) Actuating

(c) Feedback

(d) Reference

10. A signal other than the reference input that tends to affect the value of controlled variable is known as________.

(a) disturbance

(b) command

(c) control element

(d) reference input

11. The transfer function is applicable to which of the following ?

(a) Linear and time-in variant systems

(b) Linear and time-variant systems

(c) Linear systems

(d) Non-linear systems

(e) None of the above

12. From which of the following transfer function can be obtained ?

(a) Signal flow graph

(b) Analogous table

(c) Output-input ratio

(d) Standard block system

(e) None of the above

13._______ is the reference input minus the primary feedback.

(a) Manipulated variable

(b) Zero sequence

(c) Actuating signal

(d) Primary feedback

14. The term backlash is associated with______.

(a) servomotors

(b) induction relays

(c) gear trains

(d) any of the above

15. With feedback _____ increases.

(a) system stability

(b) sensitivity

(c) gain

(d) effects of disturbing signals

16. By which of the following the system response can be tested better ?

(a) Ramp input signal

(b) Sinusoidal input signal

(c) Unit impulse input signal

(d) Exponentially decaying signal

17. In a system, zero initial condition means that_____.

(a) The system is at rest and no energy is stored in any of its components

(b) The system is working with zero stored energy

(c) The system is working with zero reference signal

18. In a system low friction co-efficient facilitates________.

(a) reduced velocity lag error

(b) increased velocity lag error

(c) increased speed of response

(d) reduced time constant of the system

19. Hydraulic torque transmission system is analog of_______.

(a) amplidyne set

(b) resistance-capacitance parallel circuit

(c) motor-generator set

(d) any of the above

20. Spring constant in force-voltage analogy is analogous to________.

(a) capacitance

(b) reciprocal of capacitance

(c) current

(d) resistance