A shaded pole motor can be used for_____________?
A shaded pole motor can be used for_____________?
A. toys
B. hair dryers
C. circulators
D. any of the above
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Which of the following motors is used in a situation where load increases with speed ?
Which of the following motors is used in a situation where load increases with speed ?A. Induction motor
B. Three-phase series motor
C. Schrage motor
D. Hysteresis motorThe motor used for the compressors is____________?
The motor used for the compressors is____________?A. d.c. series motor
B. shaded pole motor
C. capacitor-start capacitor-run motor
D. reluctance motorThe power factor of a single-phase induction motor is usually?
The power factor of a single-phase induction motor is usually?A. lagging
B. always leading
C. unity
D. unity to 0.8 leadingIf a D.C. series motor is operated on A.C. supply, it will____________?
If a D.C. series motor is operated on A.C. supply, it will____________?A. spark excessively
B. have poor efficiency
C. have poor power factor
D. all of the aboveThe speed of a universal motor is usually reduced by using____________?
The speed of a universal motor is usually reduced by using____________?A. gearing
B. belts
C. brakes
D. chainsWhich of the following statements regarding repulsion-start induction motor is incorrect ?
Which of the following statements regarding repulsion-start induction motor is incorrect ?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