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Today, we are providing you the Switch Gear and Protection NEB Class 12 Question Paper 2080-2023 (Technical Stream) (New Course) Code-9261 which examination was held on the year 2080/2023 and you can download the neb grade xii (12) Switch Gear and Protection (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 Switch Gear and Protection Question Paper 2080-2023 (Technical Stream) (New Course) Exam question paper of the year 2023-2080 Nepal. The Exam Question provided below – Switch Gear and Protection NEB Class 12 Question Paper 2080-2023 (Technical Stream) (New Course) Code-9261 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 Switch Gear and Protection NEB Class 12 Question Paper 2080-2023 (Technical Stream) (New Course) Code-9261 in pdf format which is 429 KB in size. Enjoy!
Switch Gear and Protection NEB Class 12 Question Paper 2080-2023 (Technical Stream) Code-9261.
NATIONAL EXAMINATIONS BOARD [NEB]
Switch Gear and Protection – Grade XII-Class 12
Examination – 2080 (2023)
(New Course)
For partial/grade improvement students.
Subject Code: 9261
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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Physics Exam Question Paper Class 12 of 2080-2023 (New Course) | PDF Download.
Attempt all the questions.
Group ‘A’
Rewrite the correct options of each questions in your answer sheet. 9×1=9
1. Which fault mostly occurs in a power system ?
A) L-G fault
B) L-L-L-G fault
C) L-L-L fault
D) All of the above
2. Fusing element must have
A) High resistance
B) High melting point
C) Low melting point
D) None of the above
3. Circuit breaker is …………….. device.
A) An electrical
B) A mechanical
C) An electromechanical
D) Offload
4. Circuit breaker is rated in
A) Ampere
B) Voltage
C) VA
D) Watt
5. Faulty condition in a power system is firstly sensed by.
A) Circuit breaker
B) Relay
C) Isolators
D) Air break switch
6. Which fault is not related to generator fault ?
A) Stator fault
B) Rotor fault
C) Over speeding fault
D) Feeder fault
7. Power transformer is …………….. device.
A) A static
B) An electro mechanical
C) A rotational
D) None of the above
8. Earthing and grounding helps to protect…………..
A) Persons
B) equipments
C) Machineries
D) All of the above
9. The chance arcing grounds is maximum in case of …….. grounding system.
A) Solidly
B) Resistance
C) Reactance
D) Petersons coil
Group ‘B’
Short answer questions 5×5=25
10. Define fuse. Explain in detail about High Rupturing Capacity (HRC) fuse.
11. What is the working principle of potential transformer ?
12. Define relay. Mention the types of electromagnetic relay and explain any one of them.
13. Define earthing system. List out the methods of earthing and explain plate earthing in detail.
14. Explain about solidly grounding system with necessary daigram.
Group ‘C’
Long answer questions 2×8=16
15. Define circuit breaker. Explain construction and working principle of air circuit breaker (ACB).
16. Explain the differential protection of alternators in detail with necessary figure.
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