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Electrical Engineering Objective Questions { Induction Motors }

148. A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will
A. start and then stop
B. start and run slowly
C. start and run at rated speed
D. not start at all
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149.  Which of the following motors is used in mixies?
A. Repulsion motor
B. Reluctance motor
C. Hysteresis motor
D. Universal motor
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150.  Which of the following motors is inherently self starting?
A. Split motor
B. Shaded-pole motor
C. Reluctance motor
D. None of these
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151.  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
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152. Burning out of winding is due to
A. short circuited capacitor
B. capacitor value having changed
C. open circuiting of capacitor
D. none of the above
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153. Direction of rotation of a split phase motor can be reversed by reversing the connection of
A. running winding only
B. starting winding only
C. either (a) or (b)
D. both (a) and (b)
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154. Short-circuiter is used in
A. repulsion induction motor
B. repulsion motor
C. repulsion start induction run motor
D. none of the above
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