Electrical control systems Archives - Page 6 of 10 - MCQ and Quiz for Exams

51. The capacitance, in force-current analogy, is analogous to

momentum

velocity

displacement

mass

Detailed SolutionThe capacitance, in force-current analogy, is analogous to

52. In thermal-electrical analogy charge is considered analogous to

heat flow

reciprocal of heat flow

reciprocal of temperature

temperature E. none of the above

Detailed SolutionIn thermal-electrical analogy charge is considered analogous to

53. Which of the following statements is not necessarily correct for open control system ?

Input command is the sole factor responsible for providing the control action

Presence of non-linearities causes malfunctioning

Less expensive

Generally free from problems of non-linearities

Detailed SolutionWhich of the following statements is not necessarily correct for open control system ?

54. An increase in gain, in most systems, leads to

smaller damping ratio

larger damping ratio

constant damping ratio

none of the above

Detailed SolutionAn increase in gain, in most systems, leads to

55. Which of the following can be measured by the use of a tachogenerator ?

Acceleration

Speed

Speed and acceleration

Displacement E. None of the above

Detailed SolutionWhich of the following can be measured by the use of a tachogenerator ?

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

Signal flow graph

Analogous table

Output-input ratio

Standard block system E. None of the above

Detailed SolutionFrom which of the following transfer function can be obtained ?

57.

two phase induction motor

Three phase induction motor

servomotor resembles A. two phase induction motor B. Three phase induction motor C. direct current series motor

universal motor

Detailed Solution

58. Velocity error constant of a system is measured when the input to the system is unit _______ function.

parabolic

ramp

impulse

step

Detailed SolutionVelocity error constant of a system is measured when the input to the system is unit _______ function.

59. Which of the following is the non-linearity caused by servomotor ?

Static friction

Backlash

Saturation

None of the above

Detailed SolutionWhich of the following is the non-linearity caused by servomotor ?

60. With feedback _____ increases.

system stability

sensitivity

gain

effects of disturbing signals

Detailed SolutionWith feedback _____ increases.

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