Automatic Control Systems Which of the following can be used as a rotating amplifier in a control system? 1. Amplidyne 2. Separately excited dc generator 3. Synchro 4. Self excited dc generator 1 and 2 3 and 4 1, 2 and 3 All 1 and 2 3 and 4 1, 2 and 3 All ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Which control action can never be used alone? Proportional Integral Both (b) and (c) Derivative Proportional Integral Both (b) and (c) Derivative ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems In the field controlled motor the entire damping comes from Motor friction and load Field resistance Back emf Armature resistance Motor friction and load Field resistance Back emf Armature resistance ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems A system is highly oscillatory if Gain margin is close to 1 or phase margin is zero Gain margin is close to 1 Gain margin is high and phase margin is 180° Gain margin is high Gain margin is close to 1 or phase margin is zero Gain margin is close to 1 Gain margin is high and phase margin is 180° Gain margin is high ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems A lag compensator Improves steady state behavior and speeds up the transient response of the system Improves steady state behavior of the system Speeds up the transient response of the system Improves steady state behavior and preserves the transient response of the system Improves steady state behavior and speeds up the transient response of the system Improves steady state behavior of the system Speeds up the transient response of the system Improves steady state behavior and preserves the transient response of the system ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems The permanent magnet field system of brushless dc servo- motor is generally on Rotor Either (a) or (b) Partly on stator and partly on rotor Stator Rotor Either (a) or (b) Partly on stator and partly on rotor Stator ANSWER DOWNLOAD EXAMIANS APP
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