The number of the pole in Small Dc Motor Up to 5 H.P are
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The efficiency of the DC motor at maximum power is
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Which of the following rule is used to determine the direction of rotation of D.C motor?
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Which part of the DC motor can sustain maximum temperature rise?
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Which of the following load normally need starting torque more than the rated torque?
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The ratio of starting torque to full load torque is least in
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No-load speed of which of the following motor is highest?
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The dc compound motors are generally
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The mechanical power developed by the armature of a dc motor is equal to
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If the field circuit of a dc shunt motor running at rated speed gets open circuited, then immediately thereafter the speed of the motor would tent to
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The direction of rotation of a dc series motor can be reversed by interchanging
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The speed of a dc series motor decreases if the flux in the field winding
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