EXAMIANS
If the field of a dc shunt motor gets opened while the motor is running, then the
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Which of the following is not a necessary condition to be satisfied for synchronising an incoming alternator to an already operating alternator?
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In DC machines shape of net flux density is?
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If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will
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A load of 900 lbs is to be raised with a lift car weighting 855 lbs at a speed of 110 feet per minute, the over balance being 40 % and percentage efficiency 45 %. Find the horse power of the motor without counterweight
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Transformer core is laminated to reduce
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The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________.
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A compound dc generator is delivering full load current at a terminal voltage of 230 V. Its series-field winding gets short circuited. If its terminal voltage 1. becomes more than 230 V, it is overcompounded generator 2. becomes more than 230 V, it is differentially compounded generator 3. becomes less than 230 V, it is overcompounded generator 4. becomes less than 230 V, it is differentially compounded generator 5. becomes less than 230 V, it is level compounded generator From these, the correct answer is
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In an auto-transformer, power is transferred through
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Direction of rotation of DC motor is reversed by
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