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Apply gate triggering of SCR using R-C triggering circuit to modify firing angle from 30˚ to 60˚
Explain working of 1-phase full wave controlled rectifier with R-L load with free - wheeling diode with the help of circuit diagram and waveform.
Explain working of 1-phase full bridge inverter with the help of circuit diagram and waveform
With neat circuit diagram and waveform explain operation of Boost converter in continuous conduction mode.
With circuit diagram and waveform explain working of single phase cycloconverter with output frequency 1/5th of supply frequency.
State adverse effects of electromagnatic interference due to application of power electronic converters.
Mention working of SPWM modulation technique for varying output voltage of 1- phase full bridge inverter.
Explain three phase inverter with 120° mode of conduction with circuit and waveform
State causes and effects of harmonics developed with voltage and current of inverter output.
Mention working of SVPWM modulation technique to change output voltage of 1- phase inverter.
Explain working of three phase inverter with 180° mode of conduction with circuit and waveform
Derive formula of RMS voltage for the output of 1-phase half bridge controlled rectifier.
Apply suitable power electronic converter with bi-directional switches for single stage ac to ac conversion.
Describe three phase full-wave controlled AC –DC converter with R load with circuit and waveform
Apply suitable power electronic converter for light dimmer control when light is supplied with ac source.
Enlist seven applications of power electronic switch based inverter circuit in the domain of power system and electrical drives.
Compare operation of SCR with MOSFET on the basis of switching losses and conduction losses. Provide rationale for your answer.
Apply chopper circuit for 4-quadrant operation with possible switching operations for operating in 2nd and 3rd quadrant.
Compare construction of power diode with that of signal diode on the basis of constructional features, typical voltage and current ratings, switching speed and applications.
Apply dual converter with three phase input to obtain variable positive and negative output voltages.
Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.
BE Electrical
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Official Gujarat Technological University (GTU) examination paper for Power Electronics (Summer 2026, B.E. · Electrical Engineering, Sem 4). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.
3140915 Power Electronics
Official GTU PDF · Summer 2026
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