Which of the following methods may be adopted to reduce the effects of armature reaction ?

Related Mcqs:

If an insulating material is operated beyond the maximum allowable temperature, its life is_____________?

A. drastically increased B. drastically reduced C. unaffected D. none of the above...

The thermal conductivity of hydrogen is _____________ times that of air?

A. 2 B. 3 C. 5 D. 7...

The time taken by the machine to attain 0.632 of its final steady temperature rise is called_____________?

A. heating time constant B. cooling time constant C. either A. or B. D. none of the above...

The value of exciting or magnetizing current depends upon which of the following factors ?

A. Total m.m.f. required B. The number of turns in the exciting winding C. The way in which the winding is distributed D. All of the above...

The heat dissipating capability of transformers of ratings higher than 30 kVA in increased by providing which of the following ?

A. Corrugations B. Fins C. Tubes D. Radiator tanks E. All of the above...