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RoIINo.‘ HEEEEEEEEEN Total No. of Pages : 02
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Total No. of Questions : 18B.Tech.(EE / Electrical & Electronics Engg.) (2012 Onwards)
B.Tech (Electronics & Electrical Engg./ Electrical Engineering & Industrial Control) (2012 to 2017) (Sem.-4)
POWER SYSTEMS-I
(Transmission & Distribution)
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Subject Code : BTEE-405M.Code : 57107
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS 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 :
- List out the limitation of high voltage power transmission.
- What are the differences between transmission and distribution?
- How inductance and capacitance of transmission line are affected by the spacing between the conductors?
- Define Transposition of a line:
- How will you reduce corona loss?
- Why skin effect is absent in DC systems?
- Define Voltage Regulation of a transmission line.
- What are the advantages of shunt compensation?
- Define Stringing of Conductors.
- What are the tests performed on insulators?
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Firstranker's choiceSECTION-B
- Derive the insulation resistance and capacitance of a single core cable.
- Derive the necessary relations when a medium transmission line is represented by nominal T circuit.
- Discuss capacitance grading of underground cable.
- Discuss briefly surge impedance loading and power angle curve.
- Discuss different types of supporting structures for overhead transmission line.
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SECTION-C
- Calculate the GMR of conductors having seven strands each of 3mm radius.
- Calculate the string efficiency of a string of three insulator units. The capacitance of each unit to earth and line be 20% and 5% of the self-capacitance unit. Derive any formula that you might be used.
- Explain step by step procedure for construction of receiving-end transmission line. State the ratings of phase modifiers.
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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 Question Papers 2020 December (All Branches)