Electrical control systems

71. A control system working under unknown random actions is called

Computer control system
Digital data system
Stochastic control system
Adaptive control system

Detailed Solution

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class="screen-reader-text">A control system working under unknown random actions is called

72. The phase lag produced by transportation relays

Is independent of frequency
Is inversely proportional to frequency
Increases linearly with frequency
Decreases linearly with frequency

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title="The phase lag produced by transportation relays" class="read-more button" href="https://exam.pscnotes.com/mcq/the-phase-lag-produced-by-transportation-relays/#more-45471">Detailed SolutionThe phase lag produced by transportation relays

73. The output of a feedback control system must be a function of

reference and output
reference and input
input and feedback signal
output and feedback signal

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48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube
feedback control system must be a function of" class="read-more button" href="https://exam.pscnotes.com/mcq/the-output-of-a-feedback-control-system-must-be-a-function-of/#more-45341">Detailed SolutionThe output of a feedback control system must be a function of

74. Which of the following devices are commonly used as error detectors in instruments ?

Vernistats
Microsyns
Resolvers
Any of the above

Detailed SolutionWhich of the

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following devices are commonly used as error detectors in instruments ?

75. A control system with excessive noise, is likely to suffer from

saturation in amplifying stages
loss of gain
vibrations
oscillations

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button" href="https://exam.pscnotes.com/mcq/a-control-system-with-excessive-noise-is-likely-to-suffer-from/#more-45149">Detailed SolutionA control system with excessive noise, is likely to suffer from

76. In open loop system

the control action depends on the size of the system
the control action depends on system variables
the control action depends on the input signal
the control action is independent of the output

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href="https://www.youtube.com/channel/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1" target="_blank" class="youtube-subscribe-button"> Subscribe on YouTube title="In open loop system" class="read-more button" href="https://exam.pscnotes.com/mcq/in-open-loop-system/#more-45125">Detailed SolutionIn open loop system

77. An automatic toaster is a ______ loop control system.

open
closed
partially closed
any of the above

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href="https://exam.pscnotes.com/mcq/an-automatic-toaster-is-a-______-loop-control-system/#more-45124">Detailed SolutionAn automatic toaster is a ______ loop control system.

78. In liquid level and electrical system analogy, voltage is considered analogous to

head
liquid flow
liquid flow rate
none of the above

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class="read-more button" href="https://exam.pscnotes.com/mcq/in-liquid-level-and-electrical-system-analogy-voltage-is-considered-analogous-to/#more-45065">Detailed SolutionIn liquid level and electrical system analogy, voltage is considered analogous to

79. Is not a final control element.

Control valve
Potentiometer
Electropneumatic converter
Servomotor

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class="read-more button" href="https://exam.pscnotes.com/mcq/is-not-a-final-control-element/#more-44871">Detailed SolutionIs not a final control element.

80. If the gain of the critical damped system is increased it will behave as

oscillatory
critically damped
overdamped
underdamped E. none of the above

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