Machines cooled by direct cooling method may be called_____________?

Related Mcqs:

Materials exhibiting zero value of resistivity are known as ____________ ?

A. conductors B. semiconductors C. insulators D. superconductors...

The slot leakage can be calculated by making which of the following assumptions ?

A. The current in the slot conductors is uniformly distributed over their cross-section B. The leakage path is straight across the slot and around the iron at the bottom C. The permanence of air paths is only considered. The reluctance of iron paths is assumed as zero D. All of the above...

In transformers using hot rolled steel, the cross-section of the yoke is made about __________ greater than that of the core?

A. 5 percent B. 10 percent C. 15 percent D. 30 percent E. none of the above...

D.C. servomotors are used in______________?

A. purely D.C. control systems B. purely AC. control systems C. both D.C. and AC. control systems D. none 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...