If a D.C. generator fails to build up the probable cause could not be – McqOptions

MCQOPTIONS

1.	If a D.C. generator fails to build up the probable cause could not be
A.	imperfect brush contact
B.	field resistance less than the critical resistance
C.	no residual magnetism in the generator
D.	faulty shunt connections tending to reduce the residual magnetism
Answer» C. no residual magnetism in the generator

Discussion

No Comment Found

Related MCQs

The armature of D.C. generator is laminated to 
Laminations of core are generally made of 
Following energized winding of a D.C. machine should not be opened as it would produce high inductive voltage which may be dangerous to personnel and may cause its own insulation failure.
Armature reaction in a generator results in
If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be
In a separately excited generator supplying rated load the armature reaction ,
A 220 V D.C. generator is run at full speed without any excitation. The open circuit voltage will be
A sinusoidal voltage of 5 Hz is applied to the field of a shunt generator. The armature voltage wave
In a D.C. generator
The terminal voltage of a D.C. shunt generator drops on load because of all of the following reasons except