- (A) retentivity
- (B) resistivity
- (C) susceptibility
- (D) none of the above
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- (A) equal to full load current
- (B) less than full load current
- (C) slightly more than full load current
- (D) several times the full load current
- (A) It requires more maintenance of commutator and other mechanical devices
- (B) It makes quite a bit of noise on starting
- (C) In fractional horse power motors, it has replaced the capacitor motors
- (D) It is not easily reversed
- (A) running winding
- (B) rotor winding
- (C) field winding
- (D) compensating winding
- (A) smaller brush width
- (B) less number of field turns
- (C) more number of armature turns
- (D) less air gap
- (E) all of the above
- (A) it revolves synchronously
- (B) it is not subject to any magnetic or mechanical vibrations
- (C) it can be easily manufactured in extremely small sizes of up to 1 W output
- (D) it develops hysteresis torque which is extremely steady both in amplitude and phase
- (A) It requires only one winding
- (B) It can rotate in one direction only
- (C) It is self-starting
- (D) It is not self-starting
- (A) varying field flux with tapped field windings
- (B) connecting rheostat in series
- (C) applying variable voltage by means of silicon controlled rectifier
- (D) applying variable voltage by means of variable auto-transformer
- (E) all of the above methods
- (A) It is extremely sensitive to fluctuations in supply voltage
- (B) Its high starting torque is due to its high rotor hysteresis loss
- (C) It is extremely quiet in operation
- (D) It accelerates from rest to full-speed almost instantaneously
- (A) high starting torque
- (B) low starting torque
- (C) medium starting torque
- (D) very high starting torque
