If a dc shunt motor is stopped by forcing starter handle back to OFF – McqOptions

MCQOPTIONS

1.	If a dc shunt motor is stopped by forcing starter handle back to OFF position, then the __________
A.	dangerous sparking occurs at last stud
B.	dangerous sparking occurs at all stud
C.	it stops normally
D.	heavy sparking
Answer» B. dangerous sparking occurs at all stud

Discussion

No Comment Found

Related MCQs

A d.c. generator has been provided tappings on the armature winding at intervals of 120 degrees from the side of commutator. The connection will be __________
A 200 V dc motor has external resistances of Ra and Rf in armature and field circuits respectively. The starting current is reduced when?
If a dc shunt motor is stopped by forcing starter handle back to OFF position, then the __________
Long back ago, magnetic casette were in use, having permanent magnet dc motors which had?
Most commercial compound dc generator are normally supplied by manufacturers as ______ compounded machines.
Which of the following are applied with differential compound motor?
Most commercial compound dc generator are normally supplied by manufacturers as over compound machines because __________
Centrifugal pumps, fans-blowers use __________
The manufacturer has mentioned a medium starting torque and 15% speed regulation. Which is the most appropriate motor for this requirement?
There is an application which required pulsating loads, punch presses. The most preferred machines would be __________