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Electrical Machines

Electrical Machines
The field divertor resistance for a DC series motor is of order of

 50 Ω
 100 Ω
 10 Ω
 0.1 Ω

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Electrical Machines
A 440 V, 3-phase, 10 pole and 50 HZ synchronous motor delivering a torque of 50 N-m, delivers a power of

 500W
 1000W
 3000W
 100W

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Electrical Machines
The DC compound motors are generally

 Cummulative compound.
 Differentical compound.
 None of these.
 Level Compound.

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Electrical Machines
A DC motor with armature resistance of 0.5 ohms connected directly to a 220 Volt supply. If the armature is stationary then the current flowing through the armature is

 250 A.
 570 A.
 340 A.
 440 A.

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Electrical Machines
Quadrature axis synchronous reactance is the ratio of

 Vmax to Imin.
 Vmin to Imax.
 Vmin to Imin.
 Vmax to Imax.

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Electrical Machines
In a synchronous motor torque or load angle δ ------------- with increase in load

 remains unaffected
 decreases
 increases
None of these

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MORE MCQ ON Electrical Machines

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