GATE EE 2022 Paper 1 — page 20

Questions 58–60 of 65. Imported answers require review unless explicitly marked reviewed.

Consider an ideal full-bridge single-phase DC-AC inverter with a DC bus voltage magnitude of 1000 V. The inverter output voltage

shown below, is obtained when diagonal switches of the inverter are switched with 50 % duty cycle. The inverter feeds a load with a sinusoidal current given by,

A, where

. The active power, in watts, delivered to the load is ________. (round off to nearest integer)

Diagram for Electrical Engineering question 58

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For the ideal AC-DC rectifier circuit shown in the figure below, the load current magnitude is

A and is ripple free. The thyristors are fired with a delay angle of 45°. The amplitude of the fundamental component of the source current, in amperes, is __________. (round off to two decimal places)

Diagram for Electrical Engineering question 59

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A 3-phase grid-connected voltage source converter with DC link voltage of 1000 V is switched using sinusoidal Pulse Width Modulation (PWM) technique. If the grid phase current is 10 A and the 3-phase complex power supplied by the converter is given by

VA, then the modulation index used in sinusoidal PWM is __________. (round off to two decimal places)

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2022 · Paper 1

Question 58

Question 59

Question 60