Power Electronics SPPU Endsem Question Paper Nov 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
- Nov 2024
- Max. marks
- 70
- Time
- 2½ Hours
- Semester
- I
- Paper code
- [6353]-62
Printed for: T.E. (Electrical Engineering)
Instructions to the candidates
- Solve Q1 or Q2, Q3 or Q4, Q5 or Q6, Q7or Q8.
- Figures to the right indicate full marks.
- Neat diagrams must be drawn wherever necessary.
- Assume suitable additional data, jf necessary.
- Use of non-programmable calculator is allowed.
Questions
Q1
- a)[9]
Explain the operation of single phase fully controlled bridge converter with RL load. Derive the equation for average and rms output voltage. Draw waveforms of output voltage and current for = 60° with continuous conduction.
- b)[8]
Describe working of circulating current type single phase dual converter with waveforms.
OR- a)
Q2
- a)[9]
With neat circuit diagram explain operation of single phase semi controlled converter connected to R Load. Derive the equation for average and rms output voltage. Draw output voltage and output current waveforms for 45°
- b)[8]
A single phase fully controlled bridge 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. 2
Also asked:May 2024
- a)
Q3
- a)[9]
Explain working of three phase full controlled converter with RL Load. Draw output voltage and current waveforms for =30°. Derive the expression for average and RMS output voltage.
Also asked:Nov 2023
- b)[9]
Explain operation of two stage ac voltage regulator with an output waveform for RL load.
OR- a)
Q4
- a)[9]
Explain operation AC voltage regulator with an output waveform for RL load. Derive the expression for average and RMS output voltage. Daw the waveform for = 60°
Also asked:Nov 2023
- b)[9]
Explain working of three phase Semi controlled converter with R Load and firing angle of 30 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:May 2024
OR- a)
Q6
Q7
- a)[10]
Explain working of three phase six step voltage source inverter in 180° mode of operation. For star connected load draw output voltage waveforms. Show devices conducting in each step.
- b)[8]
What are different harmonic elimination techniques in inverter? Explain any two methods in details. 3
OR- a)
Q8
- a)[10]
Explain working of three phase six step voltage source inverter in 120° mode of operation. For star connected load draw output voltage waveforms. Show devices conducting in each step.
- b)[8]
This part has equations that don’t show as text. Open the PDF to read it.
- a)