For open control system which of the following statements is incorrect ?
(A) Less expensive
(B) Recalibration is not required for maintaining the required quality of the output
(C) Construction is simple and maintenance easy
(D) Errors are caused by disturbances
In closed loop control system, with positive value of feedback gain the overall gain of the system will______________?
(A) decrease
(B) increase
(C) be unaffected
(D) any of the above
____________is a part of the human temperature control system?
(A) Digestive system
(B) Perspiration system
(C) Ear
(D) Leg movement
Any externally introduced signal affecting the controlled output is called a______________?
(A) feedback
(B) stimulus
(C) signal
(D) gain control
Regenerative feedback implies feedback with_______________?
(A) oscillations
(B) step input
(C) negative sign
(D) positive sign
On which of the following factors does the sensitivity of a closed loop system to gain changes and load disturbances depend ?
(A) Frequency
(B) Loop gain
(C) Forward gain
(D) All of the above
A control system with excessive noise, is likely to suffer from_______________?
(A) saturation in amplifying stages
(B) loss of gain
(C) vibrations
(D) oscillations
A.C. servomotor resembles_____________?
(A) two phase induction motor
(B) Three phase induction motor
(C) direct current series motor
(D) universal motor
Transfer function of a system is used to calculate which of the following ?
(A) The order of the system
(B) The time constant
(C) The output for any given input
(D) The steady state gain
Zero initial condition for a system means_______________?
(A) input reference signal is zero
(B) zero stored energy
(C) ne initial movement of moving parts
(D) system is at rest and no energy is stored in any of its components