Electrical control systems Archives - Page 4 of 10 - MCQ and Quiz for Exams

31. In an automatic control system which of the following elements is not used ?

Error detector

Final control element

Sensor

Oscillator

Detailed SolutionIn an automatic control system which of the following elements is not used ?

32. A differentiator is usually not a part of a control system because it

reduces damping

reduces the gain margin

increases input noise

increases error

Detailed SolutionA differentiator is usually not a part of a control system because it

33. A conditionally stable system exhibits poor stability at

low frequencies

reduced values of open loop gain

increased values of open loop gain

none of the above

Detailed SolutionA conditionally stable system exhibits poor stability at

34. The frequency and time domain are related through which of the following?

Laplace Transform and Fourier Integral

Laplace Transform

Fourier Integral

Either (B) or (C)

Detailed SolutionThe frequency and time domain are related through which of the following?

35. Is a part of the human temperature control system.

Digestive system

Perspiration system

Ear

Leg movement

Detailed SolutionIs a part of the human temperature control system.

36. A controller, essentially, is a

sensor

clipper

comparator

amplifier

Detailed SolutionA controller, essentially, is a

37. Spring constant in force-voltage analogy is analogous to

capacitance

reciprocal of capacitance

current

resistance

Detailed SolutionSpring constant in force-voltage analogy is analogous to

38. technique is not applicable to nonlinear system ?

Nyquist Criterion

Quasi linearization

Functional analysis

Phase-plane representation

Detailed Solutiontechnique is not applicable to nonlinear system ?

39. The second derivative input signals modify which of the following ?

The time constant of the system

Damping of the system

The gain of the system

The time constant and suppress the oscillations E. None of the above

Detailed SolutionThe second derivative input signals modify which of the following ?

40. Which of the following is the input to a controller ?

Servo signal

Desired variable value

Error signal

Sensed signal

Detailed SolutionWhich of the following is the input to a controller ?

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