engineering recuitment NCL Assistant Foreman (Trainee) Mock Test 2024 Electrical Machines DC Generators
Assertion A: Separately excited generators are used in Ward Leonard System of speed control but self-excited are not.
Reason R: Self excitation is unsuitable at lower voltage
1
A is correct but R is not a suitable reason for it
2
R is correct but A is not correct
3
A is correct and R is the suitable reason for it
4
A is correct but R is not correct