Power Electronics SPPU Endsem Question Paper May 2024
All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.
- Subject code
- 303142
- Pattern
- 2019 pattern
- Exam
- Endsem
- Session
- May 2024
- Max. marks
- 70
- Time
- 2½ Hours
- Semester
- I
- Paper code
- [6262]-63
Printed for: T.E. (Electrical Engineering)
Instructions to the candidates
- Answer Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8.
- Figures to the right indicates full marks.
- Neat diagrams must be drawn wherever necessary.
- Assume suitable additional data, if necessary.
- Use of non-programmable calculator is allowed.
Questions
Q1
- a)[4]
Explain difference between 1 - phase half - controlled converter and fully controlled converter.
- b)[6]
Explain single phase dual converter with R-Load.
- c)[8]
Explain the operation of single phase fully controlled bridge converter with RL load. Draw waveforms of output voltage and current for = 60 º with continuous conduction.
OR- a)
Q2
- a)[4]
Compare Circulating & non circulating current mode of dual converter.
- b)[6]
Describe working of single - phase semi converter with R load. Draw waveforms of load voltage, load current for = 60 o .
Also asked:May 2025
- c)[8]
A single phase fully controlled converter is connected to R Load of 10 . The input voltage to the bridge is 230 V. Calculate. i) Average and RMS load voltage ii) Average and RMS load current Firing angle is 60 degrees.
Also asked:Nov 2024
- a)
Q3
- a)[3]
Draw output voltage & current waveform of single - phase AC voltage regulator with RL load.
- b)[6]
Explain working of three phase semi controlled converter with R Load and firing angle of 30 degrees. Draw output voltage waveforms.
- c)[8]
Explain operation of two stage AC voltage regulator with an output waveform for RL load. 2
OR- a)
Q4
- a)[3]
What is two stage AC voltage regulator? Draw neat diagram with R load.
- b)[6]
Explain single phase AC voltage regulator feeding R load. Draw output voltage waveform for firing angle of 60 o .
- c)[8]
Explain working of three phase fully controlled converter with RL Load and firing angle of 60 degrees. Draw output voltage waveforms.
- a)
Q5
- a)[9]
Explain working of single - phase full bridge voltage source Inverter connected to RL load with neat circuit diagram. Draw output voltage and current waveforms.
- b)[8]
Explain sinusoidal PWM technique for inverters. How voltage and freq. control is achieved?
Also asked:Nov 2024
OR- a)
Q6
Q7
- a)[10]
Explain working of three phase voltage source inverter in 180 o mode of operation. For star connected load draw output voltage waveforms. Show devices conducting in each step.
- b)[4]
What is necessity of using Multilevel Inverters? Draw circuit diagram of H bridge multilevel Inverter.
Also asked:Nov 2025
- c)[4]
What are different harmonic elimination techniques in inverter? Explain any one method.
OR- a)
Q8
- a)[10]
Explain working of three phase voltage source inverter in 120 o mode of operation. For star connected load draw output voltage waveforms.
- b)[4]
Compare multi-pulse and multilevel inverters.
Also asked:Nov 2025
- c)[4]
Draw a neat diagram and explain Flying capacitor multilevel converter.
- a)