Which of the following motors is used in tape-recorders ____________?
A. Hysteresis motor
B. Reluctance motor
C. Capacitor-run motor
D. Universal motor
A. Hysteresis motor
B. Reluctance motor
C. Capacitor-run motor
D. Universal motor
A. magnetic relay
B. thermal relay
C. centrifugal switch
D. none of the above
A. capacitor run motor
B. hysteresis motor
C. universal motor
D. repulsion motor
A. It is a reversing motor
B. It is preferred to permanent-split single-value capacitor motor where frequent reversals are required
C. It has low starting as well as rushing currents
D. It has high starting torque
A. 100 to 150 W
B. 40 to 75 W
C. 10 to 30 W
D. 5 to 10 W
A. can be operated either on D.C. or A.C. supply at approximately the same speed and output
B. can be marketed internationally
C. runs at dangerously high speed on no-load
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