engineering recuitment MAHATRANSCO AE Electrical Mock Test Electrical Machines DC Motor DC Motor Speed Control
The induced emf of a dc machine is running at 750 rpm is 220 V. The percentage increase in the field flux for generating an induced emf of 250 V at 700 rpm would be
1
7 percent
2
11.23 percent
3
21.7 percent
4
42.4 percent
5
27.8 percent