The forced oil and air circulation method is usual one for transformers of capacities____________?

Related Mcqs:

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...

Which of the following materials is used in the manufacture of resistance grids to be used in the starters of large motors ?

A. Copper B. Aluminium C. Steel D. Cast-iron...

Direct water cooling of rotor winding presents_____________?

A. no mechanical difficulties B. lesser mechanical difficulties C. greater mechanical difficulties D. none of the above...

The operation of a D.C. machine with large air gap lengths is comparatively_____________?

A. quiet B. noisy C. either of the above D. none of the above...

Which of the following is the basic consideration in the design of insulation ?

A. Electrical considerations B. Mechanical considerations C. Thermal considerations D. All of the above...