Roll No. | HEEE | [ 1] Total No. of Pages : 02
Total No. of Questions : 18
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B.Tech. (Electrical & Electronics)/(Electrical Engineering)/
(Electronics & Electrical) (Sem.=5)
POWER SYSTEMS-I(APPARATUS & MODELLING)
Subject Code : BTEE-501-18
M.Code : 78309
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Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
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SECTION-A
Answer briefly :
- What do you mean by Balanced and Unbalanced faults in Power system?
- Draw the equivalent circuit of a synchronous machine connected to infinite bus-bar.
- Compare Conventional and non-conventional energy sources.
- Why are transmission lines transposed?
- Distinguish between a feeder and a distributor.
- What do you understand by Skin effect?
- Discuss the applications of distance protection.
- What do you mean by surge impedance loading?
- What do you mean by bulk power grids?
- Define the voltage regulation in transmission lines.
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SECTION-B
- Derive an expression to determine the voltage regulation of short transmission lines. Draw its phasor diagram also.
- State the different problems associated with series compensation.
- What are the causes of over voltage? Discuss over voltage protection schemes.
- Find the expression for the capacitance of a single-core cable.
- Discuss the evolution of power system and present scenario in power systems.
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SECTION-C
- Write a note on the following :
- Bewley diagrams
- Synchronous and asynchronous interconnections
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- Discuss various types of Circuit breakers with ratings and applications.
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- Draw and explain power curve of wind turbine.
- Explain the concept and phenomenon of corona in power system.
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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.
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This download link is referred from the post: PTU B.Tech 5th Semester Last 10 Years 2011-2021 Previous Question Papers|| Punjab Technical University