Power Electronics SPPU Endsem Question Paper Nov 2023
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 2023
- Max. marks
- 70
- Time
- 2½ Hours
- Semester
- I
- Paper code
- [6180]-76
Printed for: T.E. (Electrical)
Instructions to the candidates
- Solve Q1 or Q2, Q3 or Q4, Q5 or Q6, Q7 or Q8.
- Figures to the right indicate full marks.
- Neat diagrams must be drawn wherever necessary.
- Assume suitable data, if necessary.
- Use of calculator is allowed.
Questions
Q1
- a)[9]
With neat circuit diagram explain operation of single phase fully controlled converter connected to RL Load. Derive the equation for average and rms output voltage. Draw output voltage and output current waveforms for = 60º.
- b)[8]
A single phase semi converter is supplied from 120V, 60Hz source. The load consists of R = 10 . If the average output voltage is 25% of the maximum possible average output voltage, determine- i) Delay Angle ii) RMS & average output voltage iii) RMS & average thyristor current.
OR- a)
Q2
- a)[9]
With neat circuit diagram explain operation of single phase semi controlled converter connected to RL Load. Derive the equation for average and rms output voltage. Draw output voltage and output current waveforms for = 45º.
- b)[8]
A single phase full converter is supplied from 230V, 50Hz source and delivering power to the resistance of 10 in series with large smoothing inductor. For a firing delay of 45° determine i) Average output voltage ii) Average output current iii) Form Factor iv) Ripple Factor
- a)
Q3
- a)[10]
Explain working of three phase half controlled converter with R Load. Draw output voltage and current waveforms. Derive the expression for average and RMS output voltage.
Also asked:Nov 2024
- b)[8]
An On- off-type ac regulator is operating with a resistive load of R = 10 Ohm and RMS supply voltage is 230 V. The controller remains on for 40 cycles and is off for 60 cycles. Determine, i) RMS Load voltage ii) Input power factor
OR- a)
Q4
- a)[10]
Explain working of three phase full controlled converter with RL Load. Draw output voltage and current waveforms. Derive the expression for average and RMS output voltage.
Also asked:Nov 2024
- b)[8]
Explain operation AC voltage regulator with an output waveform for RL load. Derive the expression for average and RMS output voltage.
Also asked:Nov 2024
- a)
Q5
- a)[8]
What is need of controlling output voltage in an inverter? Explain any two method in detail.
- b)[9]
Explain with circuit diagram and waveforms, operation of single phase single phase bridge inverter. Derive the expression for output voltage and current.
OR- a)
Q6
Q7
ORQ8
- a)[10]
Explain cascaded multilevel inverter using 3 H-bridges connected to input supply. Draw output voltage waveforms. What are its advantages?
- b)[8]
This part has equations that don’t show as text. Open the PDF to read it.
- a)