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What are dv/dt and di/dt ratings of SCR? What happens if these rating exceeded? Explain 04 CO-1 U
What is commutation? Explain complementary commutation circuit. 07 CO-2 E
With help of neat diagram and associated waveform, explain the operation of resistance triggering circuit 04 CO-2 A
A single phase semi converter is operated from 120 V, 60 Hz ac supply. The load resistance is 10 Ω, if the average output voltage is 25% of the maximum possible average output voltage, finds: 1. Delay angle 2. Average and rms output voltage 3. Average and rms thyristor current. 07 CO-4 A
A DC type A chopper has resistive load 20 Ω and input voltage of 220 volts. When the chopper remains on, its voltage drop is Vch = 1.5 volts and chopping frequency is 10 kHz, if duty cycle is 80% determine: 1. Average output voltage 2. RMS output voltage 3. Chopper efficiency 4. Effective input resistance. 07 CO-5 E
What is the function of Chopper? Explain the working of step down chopper. 03 CO-5 U
With help of circuit diagram explain the working of class D chopper. 04 CO-5 A
With help of neat circuit diagram and waveforms, explain the operation of PWM full bridge inverter with resistive load. 07 CO-5 A
With help of circuit diagram explain the working of class B chopper. 04 CO-5 N
With help of neat circuit diagram and waveforms, explain the operation of single phase current source inverter. 07 CO-5 U
What are the on conditions for SCR? Explain the RC triggering circuit in detail. 07 CO-2 U
With help of neat circuit diagram and associated waveform explain the operation of single phase bridge converter for resistive load. 07 CO-4 N
What are the advantages of SMPS over normal power supply? List out the various applications of SMPS. 03 CO-5 N
With help of block diagram explain the operation of off line uninterrupted power supply. Write the detail specifications of off line UPS. 07 CO-7 A
Explain the construction, working and applications of permanent magnet stepper motor drive. 07 CO-6 A
Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.
BE EC
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Official Gujarat Technological University (GTU) examination paper for Power Electronics (Summer 2026, B.E. · EC Engineering, Sem 5). 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.
3151106 Power Electronics
Official GTU PDF · Summer 2026
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