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Today, we are providing you the Power Transmission and Distribution NEB Class 12 Question Paper 2080-2023 (Technical Stream) (New Course) Code-9291 which examination was held on the year 2080/2023 and you can download the neb grade xii (12) Power Transmission and Distribution (New Course) subject question paper of the year 2080-2023 in PDF format which is only for technical stream’s regular student whose two digits of registration number start from 79. Please check and download pdf file NEB grade 12 Power Transmission and Distribution Question Paper 2080-2023 (Technical Stream) (New Course) Exam question paper of the year 2023-2080 Nepal. The Exam Question provided below – Power Transmission and Distribution NEB Class 12 Question Paper 2080-2023 (Technical Stream) (New Course) Code-9291 is for the board exam 2079 and onwards. And it is based on the latest NEB Syllabus for 2079 and so on. We will be adding more Exam Question Papers of grade xii-class 12 later on. Scroll down to Download Power Transmission and Distribution NEB Class 12 Question Paper 2080-2023 (Technical Stream) (New Course) Code-9291 in pdf format which is 448 KB in size. Enjoy!
Power Transmission and Distribution NEB Class 12 Question Paper 2080-2023 (Technical Stream) Code-9291.
NATIONAL EXAMINATIONS BOARD [NEB]
Power Transmission and Distribution – Grade XII-Class 12
Examination – 2080 (2023)
(New Course)
For partial/grade improvement students.
Subject Code: 9291
Time – 2 hrs
Full Marks – 50
Check this …
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Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.
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Attempt all the questions.
Group ‘A’
Rewrite the correct options of each questions in your answer sheet. 9×1=9
1. Mostly used transmission voltage in Nepal is
A) 220 kv
B) 132 kv
C) 400 kv
D) 66 kv
2. According to electrical regulation, distribution voltage deviation limit is
A) 5%
B) 10%
C) 2.5%
D) 12 .5%
3. A long transmission line has considerable effect of ………..
A) series capacitance
B) shunt capacitance
C) series inductance
D) shunt inductance
4. The voltage normally adapted for transmission line for 30-60 km distance is
A) 11 kv
B) 33 kv
C) 6.6 kv
D) 66 kv
5. RCC poles are used for voltage distribution lines upto
A) 11 kv
B) 33 kv
C) 6.6 kv
D) 66 kv
6. Which of the following parameters is not primary parameter is transmission line ?
A) Resistance
B) Attenuation constant
C) Capacitance
D) Conductance
7. …………. cables are used for 132 kv lines.
A) High tension
B) Super tension
C) Extra high tension
D) Extra super tension
8. Which of the following distribution system is more reliable ?
A) Radial system
B) Tree system
C) Ring main system
D) All
9. Which of the following method is not valid method for maintaining the voltage within limits in EHV transmission lines ?
A) shunt reactors
B) Auto transformer up to changing
C) synchronous condenser
D) shunt capacitor
Group ‘B’
Short answer questions. 5×5=25
10. List any two disadvantages of ac distribution system. Compare between overhead and underground system.
11. Define corona. What are the effects of corona ? Also specify the methods of reducing its effect.
12. Classify cables on basis of their working voltage ? Describe in details about cable construction with well labelled diagram.
13. Explain radial feeder and interconnected network system in AC primary distribution system.
14. Why is there necessity of voltage control ? Explain excitation control of alternator and tap changing transformer method of voltage control.
Group ‘C’
Long answer questions 2×8=16
15. Write the empirical formula for the selection of economical voltage for transmission line. Describe about types of line supports and type of insulators used in transmission line in detail 1.5+6.5
16. List out the factor for the determination of size of conductors. Explain the losses in distribution system in details. 2+6
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