Short circuiting is caused in the armature winding due to

The armature MMF waveform of a DC machine is

In a DC machine the armature mmf is

In large sized DC machines the compensating windings are provided to

Open circuited armature coil of a DC machine is

To avoid formation of grooves in the commutator

The voltage regulation of a DC generator at full load being zero implies that the generator is

In DC machines, the interpoles are provided

The voltmeter connected across a generator reads voltage same at no load and at full load (rated). The generator is of the type

Flashing of DC generator means

With the increases in field excitation of a DC generator, its generated emf

In a DC generator, the ripples in the direct emf generated are reduced by employing

If residual magnetism is present in a DC generator, the induced emf at zero speed will be

In a Dc generator the magnetic neutral axis coincide with geometrical neutral axis, when

Due to magnetic saturation, the flux per pole in a DC machine without brush shift

The factors that are responsible for decrease in terminal voltage of a shunt generator are

The fall in speed of the DC generator due to increase in load can be corrected by

For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is

Which of the following DC generators has rising V-I characteristics?

Flashing the field of DC generator means

Which of following DC generator will be in a position to build up without any residual magnetism in the field?

A generator may loose residual magnetism due to

A 220 V DC generator is run at full speed without any excitation. The open circuit voltage will be

In DC generator on no-load, the air gap flux distribution in space is

The armature mmf of a DC machine has

The slight curvature at the lower end of the OCC of a self excited DC generator is due to

In DC generators, the residual magnetism is of the order of

The compensating winding in a DC machine

A 250 V DC generator in run at rated speed with no excitation. The open circuit voltage will be

The ___________________ generator has the poorest voltage regulation.