EXAMIANS
Series booster is a
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If a DC motor is connected across the AC supply it will
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If an AC servomotor has one of its winding excited by AC, then voltage measured at the other winding with rotor running will be
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The type of DC motor generally used for shears and punches is
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_____________ types of induction motor are widely used.
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A synchronous motor is supplying a load at unity power factor. If the load on the motor is increased keeping its excitation and terminal voltage constant, the power factor
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A 250 V DC generator in run at rated speed with no excitation. The open circuit voltage will be
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A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor. The frequency is 50Hz. The slip of the motor is
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If in a sub – station there is one 132 / 33 kV transformer whose secondary is connected with primary of one 33 / 11 kV transformer, the total transformation ratio of the sub – station will be,
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When the mechanical power is developed by a DC motor maximum
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