An SCR HWR is applied a Sine wave voltage. If its firing angle is

An SCR HWR is applied a Sine wave voltage. If its firing angle is
| An SCR HWR is applied a Sine wave voltage. If its firing angle is 45°, what is the value of the maximum conduction angle possible? Identify from the options given below. 

A. 45°

B. 90°

C. 135°

D. 225°

Please scroll down to see the correct answer and solution guide.

Right Answer is: C

SOLUTION

Conduction angle :

The number of degree’s in a half cycle for which SCR is turned ON, is known as Conduction angle (γT). 

Single Phase Half Controlled Rectifier:

 

The firing angle α = 450

From the above waveform, conduction angle (γT) = π - α

= π – 450 = 1350