Which of the following motors is most suitable for signalling devices and many kinds of timers ?

Related Mcqs:

The size of poxvirus is_______________?

A. 20 nm B. 200 nm C. 250 nm D. 300 nm...

When two D.C. series motors are connected in parallel, the resultant speed is____________?

A. more than the normal speed B. loss than the normal speed C. normal speed D. zero...

Which one of the following is not the function of pole shoes in a D.C. machine ?

A. To reduce eddy current loss B. To support the field coils C. To spread out flux for better uniformity D. To reduce the reluctance of the magnetic path...

Which of the following motors is usually used in house-hold refrigerators ?

A. D.C. shunt motor B. D.C. series motor C. Single phase induction motor (split phase start or induction run motor) D. Reluctance motor E. Synchronous motor...

If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens____________?

A. this will make armature to take heavy current, possibly burning it B. this will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses C. nothing will happen to motor D. motor will come to stop...