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 55easy
Thyrisor A has rated gate carrent of 2 A while thyristor B has rated gate current of 200 mA. Then
Question 56easy
The anode current through a conducting SCK is 10 A. If its gate current is made one-fourth, the anode current will become
Question 57easy
As compared to UJT, an SUS
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Question 58easy
Which of the following conditions is necessary for a triggering system for thyristors?
Question 59easy
For thyristers, pulse triggering is preferred to de triggering because
Question 60easy
A single phase halfwave controlled rectifier has 400 sin 314 t volts as the input voltage and resistor R as the load. For firing angle of 600 for the SCR, the average output voltage in volts is
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Question 61easy
A single-phase one-pulse controlled circuit has resistance and counter emf load and 400 sin 314,t volt as the source voltage. For a load counter emf of 200 V, the range of firing angle control is
Question 62easy
A single-phase fullwave midpoint thyristor converter uses a 230/200 V transformer with centre tap on the secondary skle. The P.I.V per thyristor is
Question 63easy
For continuous conduction, in a single phase full converter each pair of SCRs conducts for