Power Semiconductor Devices and Their Applications MCQs
Practice free Power Semiconductor Devices and Their Applications multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 224 questions — no login required.
Question 163easy
An SCR can withstand a maximum junction temperature of 120?C with an ambient temperature of 75?C, If the SCR has thermal resistance from junction to ambient as 1.5?C/W, the maximum internal power dissipation allowed is
Question 164easy
A single-phase half-wave controlled rectifier has 400 sin 314 t as the input voltage and R as the load. For the firing angle of 600 for the SCR, the average output voltage is
Question 165easy
A single-phase, one-pulse controlled circuit has resistance and counter emf load and 400 sin 314t as the source voltage. For a load counter emt of 200 V, the range of firing angle control is
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Question 166easy
The uncontrolled electronic switch employed in power-electronic converters is
Question 167easy
In a commutation circuit employed to turn off an SCR, satisfactory turn-off is obtained when
Question 168easy
If a diode connected in anti-parallel with thyristor, then
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Question 169easy
In a dual converter, the circulating current
Question 170easy
Which semiconductor power device out of the following is not a current triggered device?
Question 171easy
The Triac can be used only in