GATE 2021 : Power Electronics Rapid Quiz 1 (App update required to attempt this test)
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Consider the following. A) MOSFET B) IGBT C) BJT Which of the following can block the flow of reverse voltage?
A single phase full converter is feeding a RLE load. The voltage source is of 220V, 50Hz and load is R=5ohms, E=50V & the firing angle of SCRs is 250. The load current is constant as load inductance is very large. Find the average value of load voltage.
A dc battery of 50 V is charged through a 10Ω resistor as shown in the figure. Assume that the thyristor is continuously fired. The average value of charging current (in A) is
For the given Δ – γ connected transformer. Diode D3 converts from
A 220V, 1500rpm, 10A separately excited DC motor has armature resistance
of 0.1 Ω. The motor is supplied from 3-Øfull wave uncontrolled rectifier to a 220V, 3-Ø 50Hz supply through Delta- star transformer. The transformer turn ratio so that the converter applies rated voltage to the motor (Assume transformer is ideal and conduction is continuous).
For the below figure the constant current Io will be.