EXAMIANS
Let of a thyristor Vc1, Vc2, Vc3 are forward break over voltage for gate current Ig1, Ig2, Ig3 respectively. Then
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Leakage current flows through the thyristor in
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A single phase full bridge inverter can operated in load commutation mode in case load consist of
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What is used to protect the SCR from over current ?
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When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________
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If holding current of a thyristor is 2 mA then latching current should be
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A single phase one pulse controlled circuit has a resistance R and counter emf E load 400 sin(314 t) as the source voltage. For a load counter emf of 200 V, the range of firing angle control is
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Latching current for an SCR inserted between a dc voltage source of 200 V and load is 100 mA. Compute the minimum rate of width pulse required to turn ON the SCR in case load consists of R = 20 Ω in series with L = 0.2 H.
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During reverse recovery time
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Practical way of obtaining static voltage equalization in series connected SCRs is by the use of
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