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
Related Mcqs:
- Which of the following motors is preferred for tape-recorders ?
A. Shaded pole motor
B. Hysteresis motor
C. Two value capacitor motor
D. Universal motor - Which of the following motors is used in tape-recorders ____________?
A. Hysteresis motor
B. Reluctance motor
C. Capacitor-run motor
D. Universal motor - The direction of rotation of an hysteresis motor is determined by____________?
A. interchanging the supply leads
B. position of shaded pole with respect to main pole
C. retentivity of the rotor material
D. none of these - A hysteresis motor works on the principle of__________?
A. hysteresis loss
B. magnetisation of rotor
C. eddy current loss
D. electromagnetic induction - Which of the following statements regarding hysteresis motor is in incorrect?
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 - In a hysteresis motor, the rotor must have____________?
A. retentivity
B. resistivity
C. susceptibility
D. none of the above - The rotor of a hysteresis motor is made of___________?
A. aluminium
B. cast iron
C. chrome steel
D. copper - If a particular application needs high speed and high starting torque, then which of the following motor will be preferred ?
A. Universal motor
B. Shaded pole type motor
C. Capacitor start motor
D. Capacitor start and run motor - As hysteresis motors are free from mechanical and magnetic vibrations therefore these are considered as suitable for__________?
A. fans
B. blowers
C. sound equipment
D. mixer grinders - In case of a shaded pole motor the direction of rotation of the motor is__________?
A. from main pole to shaded pole
B. from shaded pole to main pole
C. either of the above depending on voltage
D. either of the above depending on power factor
