Control System | Fill in the Blanks Type Questions

Q. Closed loop system is _______________ accurate than open-loop system.

Answer
more

Q. In a closed loop control system feedback tendency towards oscillations or instability.

Answer
increases

Q. A closed loop control system is one in which control action is some how dependent upon the ______________.

Answer
output

Q. The input which can be independently varied is known as ______________.

Answer
command

Q. In a closed loop control system feedback _______________ distortion.

Answer
reduces

Q. A large time constant corresponds to a _______________ system.

Answer
sluggish

Q. For an _______________ system, damping factor is less than unity.

Answer
underdamped

Q. For an overdamped system, damping factor is _______________.

Answer
more than unity

Q. The factor 1/jω has a phase angle of _______________.

Answer
-90°

Q. The difference between the actual value and ideal value is known as the system ______________.

Answer
error

Q. A standard signal used for comparison in a closed-loop control system is called the ______________ input.

Answer
reference

Q. The difference between the output response and the reference signal is known as the ______________ signal.

Answer
actuating

Q. A _______________ time constant corresponds to a fast response.

Answer
small

Q. Usually actuating signal is at ______________ power level.

Answer
low

Q. A signal other than the reference which affects the performance of the system is called the ______________.

Answer
disturbance

 

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