In induction motors, the length of air gap in kept as small as mechanically possible is order to have____________?

Related Mcqs:

__________ has a low relative permeability and is used principally in field frames when cost is of primary importance and extra weight is not objectionable?

A. Cast steel B. Aluminium C. Soft steel D. Cast iron...

Hydrogen has a heat transfer co-efficient __________ times that of air?

A. 1.5 B. 2.5 C. 3.5 D. 4.5...

Which of the following methods is most accurate ?

A. Equivalent current method B. Equivalent power method C. Equivalent torque method D. Method of average losses...

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

A. Increase in length of air gap at pole tips B. Increasing reluctance of pole tips C. Compensating windings D. Interpoles E. All of the above...

The insulation between windings and grounded core and the insulation between the windings of the same phase is called__________________?

A. minor insulation B. major insulation C. either of the above D. none of the above...