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 91easy
A single-phase full bridge inverter can operate in load-commutation mode in case load consists of
Question 92easy
In dc choppers, if Ton is the on period and f is the chopping frequency, then output voltage in terms of the input voltage V is given by
Question 93easy
In dc choppers, the waveform for input and output voltages are respectively
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Question 94easy
In dc choppers, per unit ripple is maximum when duty cycle a is
Question 95easy
A step.up chopper has Vs as the source voltage and a as the duty cycle. The output voltage for this chopper is given by
Question 96easy
In dc choppers if T is the chopping period, then the output voltage can be controlled by PWM by varying
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Question 97easy
In dc choppers, for periodic time T, the output voltage can be controlled by FM by varying
Question 98easy
A motor armature supplied through phase controlled SCR receives a smoother voltage shape at
Question 99easy
An SCR is used to control the speed of a dc motor. At full speed, the motor is taking 1 A at 75 V. The maximum forward surge current rating and maximum forward breakover voltage rating respectively are of the order of