Control System Multiple Choice Questions and Answers


11.  In a control system, noise can be reduced by.........


   A. Reducing bandwidth and attenuating frequencies at which external signal gets coupled to the system

   B. Increasing bandwidth

   C. Reducing bandwidth

   D. None of the above


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A. Reducing bandwidth and attenuating frequencies at which external signal gets coupled to the system

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12.  In control systems stepper motors can be used for


   A. Tape drives

   B. Capstan drives

   C. Computers

   D. None of the above


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D. None of the above

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13.  By which of the following methods the steady-state error of control system can be reduced ?


   A. By increasing time constant of the system

   B. By increasing gain constant of the system

   C. By increasing but time constant and gain constant

   D. None of the above


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B. By increasing gain constant of the system

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14.  In pneumatic control systems compensation is provided by which of the following ?


   A. Bimetal strips

   B. Extension tubes

   C. Flapping nozzle mechanism

   D. Restriction volume combinations


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D. Restriction volume combinations

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15.  In compressed air, in pneumatic control systems, is not


   A. Lubricated

   B. Filtered

   C. Regulated

   D. All of the above


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A. Lubricated

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