Fundamentals of Electrical Engineering Unit 5 – Electrical Installations: AKTU previous year questions
33 AKTU questions from Unit 5 (Electrical Installations) asked in 2022–2026, tagged by marks, year and topic. In short: about 21 marks of every paper come from this unit; the most asked topic is Protective Switching Devices (10 times); 30 questions came back in a later year. The latest ones are listed below; on the page you can filter them by 2-mark or long questions, topic and repeats.
Unit 5 previous year questions
- Describe the importance of earthing in ensuring electrical safety and protecting equipment. (7 marks, 2026, Earthing and Lightning Protection)
- How does a fuse protect an electrical circuit? Also discuss the working of following: (i) ELCB (ii) MCCB (7 marks, 2026, Protective Switching Devices)
- (i) What is the fundamental difference between a wire and a cable? What is Bus-bar? (ii) What is a battery's fundamental principle? Also specific types of battery types. (7 marks, 2026, Wires Cables and Bus-bars)
- Explain briefly the SFU. (2 marks, 2025, Protective Switching Devices)
- What is Switch fuse unit (SFU)? (2 marks, 2025, Protective Switching Devices)
- Discuss briefly the types of batteries and explain anyone with diagram. (7 marks, 2025, Types of Batteries)
- Explain construction of underground cable? Explain each layer of cable with neat diagram. Why used of bedding in cable? (7 marks, 2025, Wires Cables and Bus-bars)
- Describe the working principle of an MCB along with the necessary circuit diagrams? (7 marks, 2025, Protective Switching Devices)
- What is Bus-bars in power system? Write the type of Bus-bars. Explain the single Bus-bars system. (7 marks, 2025, Wires Cables and Bus-bars)
- Describe the classification of earthing based on the purpose, with the help of examples. (7 marks, 2025, Earthing and Lightning Protection)
- What is ELCB and why it is used? Explain the Voltage type of ELCB with suitable diagram. (7 marks, 2025, Protective Switching Devices)
- What are the common problems that occur during electrical installations? (2 marks, 2024, Electrical Wiring and Installation)
Most asked Unit 5 topics
- Protective Switching Devices – asked 10 times
- Wires Cables and Bus-bars – asked 8 times
- Types of Batteries – asked 6 times
Unit 5 question pattern
- 2-mark questions: 8 asked in 2022–2026
- 7-mark questions: 21 asked in 2022–2026
- 10-mark questions: 4 asked in 2022–2026
- About 21 marks from Unit 5 in every paper
- 30 questions were asked again in a later year
Unit 5 questions year by year
- 2026: 3 Unit 5 questions asked (21 marks across that year's papers)
- 2025: 8 Unit 5 questions asked (46 marks across that year's papers)
- 2024: 8 Unit 5 questions asked (46 marks across that year's papers)
- 2023: 8 Unit 5 questions asked (46 marks across that year's papers)
- 2022: 6 Unit 5 questions asked (44 marks across that year's papers)