GATE Questions & Answers of Single and Three Phase Configuration of Uncontrolled Rectifiers

What is the Weightage of Single and Three Phase Configuration of Uncontrolled Rectifiers in GATE Exam?

Total 4 Questions have been asked from Single and Three Phase Configuration of Uncontrolled Rectifiers topic of Power Electronics subject in previous GATE papers. Average marks 1.25.

The figure below shows an uncontrolled diode bridge rectifier supplied from a 220 V, 50 Hz, 1-phase ac source. The load draws a constant current I0 = 14 A. The conduction angle of the diode D1 in degrees (rounded off to two decimal places) is _____________ .

 

A phase-controlled, single-phase, full-bridge converter is supplying a highly inductive DC load. The converter is fed from a 230 V, 50 Hz, AC source. The fundamental frequency in Hz of the voltage ripple on the DC side is

In the circuit shown, the diodes are ideal, the inductance is small, and I0 ≠ 0. Which one of the following statements is true?

A three-phase diode bridge rectifier is feeding a constant DC current of 100 A to a highly inductive load. If three-phase, 415 V, 50 Hz AC source is supplying to this bridge rectifier then the rms value of the current in each diode, in ampere, is _____________.