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Electrical Machines

Electrical Machines
Maximum power developed depends on

 load angle
 reactance
 both 1and 2
 voltage

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Electrical Machines
Two transformers operating in parallel will share the load depending on their

 efficiency
 leakage reactance
 per unit impedance
 ratings

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Electrical Machines
A DC generator without commutator is a

 DC motor
 induction motor
 DC generator
 AC generator

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Electrical Machines
Poles of DC machine are often laminated to

 reduce armature reaction.
 dissipate more heat.
 reduce pulsation loss.
 reduce iron weight.

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Electrical Machines
Which of the following machine will have maximum efficiency?

 DC motor.
 Electrical power generator.
  Electrical power transformer.
 Induction motor.

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Electrical Machines
The speed of a motor falls from 1100 r.p.m at no-load to 1050 r.p.m at rated load. The speed regulation of motor is

 2.57 %.
 3.76%.
 2.56 %.
 4.76%.

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MORE MCQ ON Electrical Machines

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