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

In _________ machines, the size of the shaft is decided by the critical speed which depends on the deflection of the shaft?

A. small

B. medium

C. large

D. any of the above

Electrical machines having power outputs ranging from a few kW up to approximately 250 kW may be classified as_____________?

A. small size machines

B. medium size machines

C. large size machines

D. any of the above

The efficiency of a machine should be as ____________ as possible to reduce the operating cost?

A. high

B. low

C. either of the above

D. none of the above

Which of the following is the major consideration to evolve a good design ?

A. Cost

B. Durability

C. Compliance with performance criteria as laid down in specifications

D. All of the above

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

A. low power factor

B. high power factor

C. high over load capacity

D. any of the above