A practical formula for determining the thickness of insulation between low voltage and high voltage windings is__________________?

Related Mcqs:

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...

In self cooled motors the cooling time constant is about ___________ than the heating time constant because cooling conditions are worse at standstill?

A. 2 to 3 times greater B. 3 to 4 times greater C. 4 to 5 times greater D. none of the above...

____________are always double layer type?

A. Closed windings B. Open windings C. Either of the above D. None of the above...

Which of the following in an application of D.C. motors?

A. Traction B. Drives for process industry C. Battery driven vehicles D. Automatic control E. All of the above...

The voltage control in electric supply networks in required on account of which of the following reasons ?

A. Adjustment of voltage at consumers premises within statutory limits B. Control of active and reactive power C. Adjustment of short period daily and seasonal voltage variations in accordance with variations of load D. All of the above...