Armature Reaction & Commutation in DC Machine Starter Quiz 20

Number of brushes in a 4 pole LAP wound DC machines will be.

What will happen, if the residual flux is reversed in a shunt generator, which is building a voltage normally?

The cross-magnetizing effect of the Armature Reaction(AR) in DC machine can be reduced by-

In a dc machines the field flux axis and armature mmf axis are respectively along.

In a 4 pole lap wound dc machine commutation technique. We have to reverse the armature current of magnitude 16 Amp in 4 millisecond. The inductance of the coil is 2mH in each 4 parallel paths, then the value of reactance voltage will be ________ V.

A compensated generator has 10000AT/pole. Find out the AT/pole for interpolar winding.

Given: = 0.8, Interpolar air gap length = 1cm and B = 0.4T]