Servomotors – Exercise – 1

Servomotors » Exercise – 1

1. A dc servomotor is similar to a regular d.c. motor except that its design is modified to cope with :

(a) electronic switching
(b) slow speeds
(c) static conditions
(d) both (b) and (c)

Answer
Answer : (d)
Explanation
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2. One of the basic requirements of a servomotor is that it must produce high torque at all :

(a) loads
(b) frequencies
(c) speeds
(d) voltages

Answer
Answer : (c)
Explanation
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3. The most common two-phase ac servomotor differs from the standard ac induction motor because it has :

(a) higher rotor resistance
(b) higher power rating
(c) motor stator windings
(d) greater inertia

Answer
Answer : (a)
Explanation
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4. Squirrel-cage induction motor is finding increasing application in high-power servo systems because new methods have been found to :

(a) increase its rotor resistance
(b) control its torque
(c) decrease its intertia
(d) decouple its torque and flux

Answer
Answer : (d)
Explanation
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