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GATE 2020 || Power Electronics || Quiz 5
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Question 1
A three-phase diode bridge rectifier is fed from a 400 V (rms), 50 Hz, three-phase AC source. If the load is purely resistive, the peak value of instantaneous output voltage is equal to
Question 2
A single phase full-wave half-controlled bridge converter feeds an inductive load. The two SCRs in the converter are connected to a common DC bus. The converter has to have a freewheeling diode
Question 3
A single phase semi converter is operated from 230V, 50Hz AC supply. The firing angle delay is 60 degrees. The load consists of a high inductance and a resistance of 10ohms. The load current is continuous and ripple free.
The RMS value of fundamental source current will be
The RMS value of fundamental source current will be
Question 4
A single phase full converter, connected to 230 V, 50 Hz source, is feeding a load R = 10 Ω in series with a large inductance that makes the load current ripple free. For a firing angle of 45 ° the reactive power input is ________ VAR.
Question 5
If the Converter shown in figure has a purely resistive load of R and the delay angle is
The rectification efficiency and Form Factor (F.F) respectively are
The rectification efficiency and Form Factor (F.F) respectively are
Question 6
A single phase full converter is feeding a RLE load with R= 5ohms, L= 15mH and E = 100V. The AC source voltage is 230V, 50Hz. For continuous conduction, what will be the average load current for firing angle delay of 450?
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Nov 25ESE & GATE EE