GATE 2022 : Power Electronics Quiz 5

For 3ϕ full wave rectifier following Relation hold true for which load. [given α > 60°, α : firing angle].

A three-phase full converter delivers a ripple free load current of 15 A with firing angle delay of 45^o. The current distortion factor is

A single Phase full wave transistor rectifier feed power to motor load. the source voltage is 250 V, 50 Hz. R = 4 Ω, L = 12 mH, E = 120 V. For a firing angle of 40^o, the average value of output current such that the current releases energy till 160⁰ is?

A 3-phase fully controlled converter is fed from 400 V, 50 Hz mains for a firing angle of 60°, output voltage is 250 V. Calculate load resistance, source inductance & overlap angle. The load current is 25 A.

A 3 – ϕ full converter fed from 3-Phase 450 V ,50 Hz source is connected to R= 12Ω, E = 400 V and large inductance so that output current is ripple free. Calculate the input power factor for firing advance angle of 50^o ?

If the converter shown below is triggered at , then rectification efficiency is