Why field current has low values when compared to armature current

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asked Jan 23, 2018 by Rudra.sai bhargavi
reshown Feb 18, 2018 by anonymous

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In a synchronous motor, the armature current has large values for?

Last answer: In a synchronous motor, the armature current has large values for high and low excitation.

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asked Oct 7, 2020 by anonymous

A three-phase synchronous motor has a terminal voltage of 460 V and a terminal current of 120 A at a power factor of 0.95 lagging, synchronous reactance of 1.68 ohm and the field current is 47 A. The field to armature mutual inductance of the synchronous motor is _____________.

A three-phase synchronous motor has a terminal voltage of 460 V and a terminal current of 120 A at a power factor of 0.95 lagging, synchronous reactance of 1.68 ohm and the field current is 47 A. The field to armature mutual inductance of the synchronous motor is _____________. (a). 20mH (b). 16mH (c). 24mH (d). 22mH

Last answer: 22

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A field excitation of 20 A in a certain alternator results in an armature current of 400 A in short circuit and a

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asked May 17, 2018 by anonymous

A 50 kW dc shunt is loaded to draw rated armature current at any given speed. When driven

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Last answer: A 220 V dc machine has an armature resistance o f 1-ohm. If the full load current is 20A, the difference in the induced voltage when the machine is running as a motor, and as a generator is 40 V.

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asked Apr 11, 2018 by anonymous

The supply both to field and armature circuits are disconnected simultaneously in a separately excited dc...

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If shunt generator delivers 100 A at 200 V, and the resistance of the shunt field and armature are...

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Two 3-phase, Y-connected alternators are to be paralleled to a set of common busbars. The armature has a

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asked May 22, 2018 by anonymous

If the current in the armature of do series motor is reduced to 5%, the torque of the motor will become:

If the current in the armature of do series motor is reduced to 5%, the torque of the motor will become: (1) 50% of the previous value (2) 25% of the previous value (3) 150% of the previous value (4) 125% of the previous value

Last answer: If the current in the armature of do series motor is reduced to 5%, the torque of the motor will become: 25% of the previous value

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asked Apr 11, 2018 by anonymous

The torque, in a_______ is proportional to the square of the armature current.

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Last answer: The torque, in a DC series motor is proportional to the square of the armature current.

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420 views 1 answer

Why field current has low values when compared to armature current

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