GATE Electrical Engineering (EE) 2018 Solved Paper

Question : 23 of 65

Marks: +1, -0

A single-phase fully controlled rectifier is supplying a load with an anti-parallel diode as shown in the figure. All switches and diodes are ideal. Which one of the following is true for instantaneous load voltage and current?

$v_{0} ≥ 0$ and $i_{0}<0$
$v_{0}<0$ and $i_{0}<0$
$v_{0} ≥ 0$ and $i_{0} ≥ 0$
$v_{0}<0$ and $i_{0} ≥ 0$

Validate

Solution:

Since, this converter has freewheeling diode, the output voltage cannot go negative

v_{0} ≥ 0

Since, diodes and SCR are unidirectional current devices so current cannot reverse

i_{0} ≥ 0 .

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