The input current of a 3-ϕ ac voltage controller is found to be sinusoidal. Then the type of load is ________ and firing angle (radians) is ________.
1
capacitive ..... 3 π / 2
2
capacitive ..... π/2
3
inductive ..... π
4
resistive ..... 2π
5
inductive ..... 3 π/2