RVUNL EE Power Electronics Quiz 2

A freewheeling diode in a phase-controlled rectifier:

The effect on form factor, ripple frequency and efficiency When the number of pulses in rectification is increased.

A single-phase fully controlled rectifier has an average voltage of ‘P’ volts when α = 0°. Its output voltage when α = 30° is:

Ratio of average output voltage to per Phase maximum ac voltage for a 3-Phase half wave diode rectifier is

A 1- Ф full wave-controlled rectifier has a purely resistive load. The average output voltage is  with a firing angle of 60°. The input voltage is V = V_m sinωt. The value of V_m is