Academics – Electro-Technology : 2020/DEC/09
Question
Q9. (a) State the conditions necessary to turn on and turn off a thyristor (‘SCR’). (4)
(b) Describe the operation of the circuit shown in Fig Q9. (8)
(c) Sketch a clearly labelled load-voltage waveform for EACH of the following trigger delay angles:
(i) 60o. (2)
(ii) 120o. (2)
Asked in Year/Month/Ques No.
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