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

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...

The design of electromagnets is based upon which of the following fundamental equations ?

A. Force equation B. Magnetic circuit equation C. Heating equation D. Voltage equation E. All of the above...

____________are always double layer type?

A. Closed windings B. Open windings C. Either of the above D. 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...