Question

Calculate the value of the conduction angle for R-L load if the value of β and α are 19° and 29°.

(a) 10°

(b) 70°

(c) 30°

(d) 80°

The question was posed to me during an interview for a job.

My question is from Solid-State Switching Circuits topic in section Introduction to Solid-State Switching Circuits of Electric Drives

Answer 1

Correct choice is (a) 10°

Best explanation: The conduction angle for R-L load is β-α=29°-19°=10°. R-L load is a current stiff type of load. The current in the circuit only flows from α to β.