Control Systems - Study Mode
[#136] In case of d.c. servomotor, the back-emf is equivalent to an "electric friction" which tends to:
Correct Answer
(A) improve stability of the motor
[#137] The time required for the step response to decrease and stay within a specified percentage of its final value is called:
Correct Answer
(D) Settling time
[#138] Despite the presence of negative feedback, control system still have problems of instability because of
Correct Answer
(A) Components used have non-linearities
[#139] In root locus analysis the breakaway and break in points
Correct Answer
(B) Either lie on the real axis or occur in complex conjugate pairs
[#140] Lag compensation permits a high gain at low frequencies.
Correct Answer
(A) True