Electrical control systems Archives - Page 7 of 10 - MCQ and Quiz for Exams

61. In a stable control system saturation can cause which of the following ?

Low-level oscillations

High-level oscillations

Conditional stability

Overdamping

Detailed SolutionIn a stable control system saturation can cause which of the following ?

62. Phase margin of a system is used to specify which of the following ?

Frequency response

Absolute stability

Relative stability

Time response

Detailed SolutionPhase margin of a system is used to specify which of the following ?

63. Transfer function of a system is used to calculate which of the following ?

The order of the system

The time constant

The output for any given input

The steady state gain

Detailed SolutionTransfer function of a system is used to calculate which of the following ?

64.

universal motor

single phase induction motor

servomotor is basically a A. universal motor B. single phase induction motor C. two phase induction motor

three phase induction motor

Detailed Solution

65. In a system low friction coefficient facilitates

Reduced velocity lag error

Increased velocity lag error

Increased speed of response

Reduced time constant of the system

Detailed SolutionIn a system low friction coefficient facilitates

66. Mass, in force-voltage analogy, is analogous to

charge

current

inductance

resistance

Detailed SolutionMass, in force-voltage analogy, is analogous to

67. The transient response, with feedback system,

rises slowly

rises quickly

decays slowly

decays quickly

Detailed SolutionThe transient response, with feedback system,

68. As a result of introduction of negative feedback which of the following will not decrease?

Band width

Overall gain

Distortion

Instability

Detailed SolutionAs a result of introduction of negative feedback which of the following will not decrease?

69. The viscous friction co-efficient, in force-voltage analogy, is analogous to

charge

resistance

reciprocal of inductance

reciprocal of conductance E. none of the above

Detailed SolutionThe viscous friction co-efficient, in force-voltage analogy, is analogous to

70. For open control system which of the following statements is incorrect ?

Less expensive

Recalibration is not required for maintaining the required quality of the output

Construction is simple and maintenance easy

Errors are caused by disturbances

Detailed SolutionFor open control system which of the following statements is incorrect ?

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