Question

Armature reaction in a d.c. motor is increased

(i) when the armature current increases

(ii) when the armature current decreases
(iii) when the field current increases

(iv) by interpoles​

Answer 1

Answer:

i) when the armature current increases

Answer 2

Armature reaction during a d.c. motor is increased when the armature current increases.

Explanation:

The effect of armature is defined because the flux on the most field flux is named "armature reaction".

The speed of a dc motor is depend by changing this within the field or by changing the present within the armature. When the sector current is decreased, the sector flux is reduced, and also the counter emf decreases. this allows more armature current. Therefore, the motor races.

When the load on the shaft is increased and therefore the armature current increases to provide more torque, the sector is simultaneously reduced and also the motor quickens.

Hence ,

option (i) when the armature current increases is correct.

Project code #SPJ3