Building Electrical & Fire Systems interview questions
27 Building Electrical & Fire Systems questions from the Plant & Utility Ops bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.
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A.IS 17505 / BS 6387 CWZ cables that keep circuit integrity at 950 °C with water spray and mechanical shock, specified for fire alarm, fire pumps, lifts and smoke extraction feeds
B.National Building Code section on electrical and allied installations: supply layout, substation location, distribution, earthing, lightning protection and safety in buildings
C.IEC 62305-2 compares the risk of loss of life against a tolerable 10⁻⁵ per year using collection area, flash density and structure factors to decide the LPS class needed
D.supervisory software that integrates HVAC, lighting, fire, access and energy meters over BACnet, Modbus or KNX for monitoring, scheduling and alarm handling
Answer + AI explanation with Pro
2. Which term means: "National Building Code section on electrical and allied installations: supply layout, substation location, distribution, earthing, lightning protection and safety in buildings"?
Junior
A.ELV systems
B.Emergency lighting
C.IS 2189
D.NBC 2016 Part 8 Section 2
Answer + AI explanation with Pro
3. Which statement is correct?
Junior
A.NBC 2016 Part 8 Section 2 — fire lift fed by a dedicated feeder in fire-survival cable, changing over to emergency DG within seconds, with an automatic rescue device to bring the car to a landing
B.NBC 2016 Part 8 Section 2 — Indian code for automatic fire detection and alarm systems covering detector selection and spacing, zoning, control panel and loop wiring, in conventional or addressable form
C.NBC 2016 Part 8 Section 2 — National Building Code section on electrical and allied installations: supply layout, substation location, distribution, earthing, lightning protection and safety in buildings
D.NBC 2016 Part 8 Section 2 — IEC 62305-2 compares the risk of loss of life against a tolerable 10⁻⁵ per year using collection area, flash density and structure factors to decide the LPS class needed
Answer + AI explanation with Pro
4. What is IS 2189?
Junior
A.Indian code for automatic fire detection and alarm systems covering detector selection and spacing, zoning, control panel and loop wiring, in conventional or addressable form
B.IS 17505 / BS 6387 CWZ cables that keep circuit integrity at 950 °C with water spray and mechanical shock, specified for fire alarm, fire pumps, lifts and smoke extraction feeds
C.supervisory software that integrates HVAC, lighting, fire, access and energy meters over BACnet, Modbus or KNX for monitoring, scheduling and alarm handling
D.CPCB requires an acoustic enclosure limiting noise to 75 dB(A) at 1 m and an exhaust stack height of building height plus 0.2 × √kVA metres, with ventilated fuel storage
Answer + AI explanation with Pro
5. Which term means: "Indian code for automatic fire detection and alarm systems covering detector selection and spacing, zoning, control panel and loop wiring, in conventional or addressable form"?
Junior
A.IS 2189
B.ELV systems
C.Emergency lighting
D.DG room norms
Answer + AI explanation with Pro
6. Which statement is correct?
Junior
A.IS 2189 — escape routes must stay lit at about 1 lux or more from self-contained or central-battery luminaires when normal supply fails, with illuminated exit signage, for 1–3 hours
B.IS 2189 — extra-low-voltage services below 50 V AC or 120 V DC such as CCTV, access control, public address, structured cabling and intrusion detection, run in containment separate from power
C.IS 2189 — CPCB requires an acoustic enclosure limiting noise to 75 dB(A) at 1 m and an exhaust stack height of building height plus 0.2 × √kVA metres, with ventilated fuel storage
D.IS 2189 — Indian code for automatic fire detection and alarm systems covering detector selection and spacing, zoning, control panel and loop wiring, in conventional or addressable form
Answer + AI explanation with Pro
7. What is Emergency lighting?
Junior
A.fire lift fed by a dedicated feeder in fire-survival cable, changing over to emergency DG within seconds, with an automatic rescue device to bring the car to a landing
B.escape routes must stay lit at about 1 lux or more from self-contained or central-battery luminaires when normal supply fails, with illuminated exit signage, for 1–3 hours
C.supervisory software that integrates HVAC, lighting, fire, access and energy meters over BACnet, Modbus or KNX for monitoring, scheduling and alarm handling
D.IS 17505 / BS 6387 CWZ cables that keep circuit integrity at 950 °C with water spray and mechanical shock, specified for fire alarm, fire pumps, lifts and smoke extraction feeds
Answer + AI explanation with Pro
8. Which term means: "escape routes must stay lit at about 1 lux or more from self-contained or central-battery luminaires when normal supply fails, with illuminated exit signage, for 1–3 hours"?
Junior
A.Integrated building management system
B.Lightning risk assessment
C.NBC 2016 Part 8 Section 2
D.Emergency lighting
Answer + AI explanation with Pro
9. Which statement is correct?
Junior
A.Emergency lighting — IS 17505 / BS 6387 CWZ cables that keep circuit integrity at 950 °C with water spray and mechanical shock, specified for fire alarm, fire pumps, lifts and smoke extraction feeds
B.Emergency lighting — National Building Code section on electrical and allied installations: supply layout, substation location, distribution, earthing, lightning protection and safety in buildings
C.Emergency lighting — fire lift fed by a dedicated feeder in fire-survival cable, changing over to emergency DG within seconds, with an automatic rescue device to bring the car to a landing
D.Emergency lighting — escape routes must stay lit at about 1 lux or more from self-contained or central-battery luminaires when normal supply fails, with illuminated exit signage, for 1–3 hours
Answer + AI explanation with Pro
10. What is Fireman's lift supply?
Mid
A.fire lift fed by a dedicated feeder in fire-survival cable, changing over to emergency DG within seconds, with an automatic rescue device to bring the car to a landing
B.IS 17505 / BS 6387 CWZ cables that keep circuit integrity at 950 °C with water spray and mechanical shock, specified for fire alarm, fire pumps, lifts and smoke extraction feeds
C.CPCB requires an acoustic enclosure limiting noise to 75 dB(A) at 1 m and an exhaust stack height of building height plus 0.2 × √kVA metres, with ventilated fuel storage
D.escape routes must stay lit at about 1 lux or more from self-contained or central-battery luminaires when normal supply fails, with illuminated exit signage, for 1–3 hours
Answer + AI explanation with Pro
11. Which term means: "fire lift fed by a dedicated feeder in fire-survival cable, changing over to emergency DG within seconds, with an automatic rescue device to bring the car to a landing"?
Mid
A.Fire survival cables
B.Fireman's lift supply
C.DG room norms
D.NBC 2016 Part 8 Section 2
Answer + AI explanation with Pro
12. Which statement is correct?
Mid
A.Fireman's lift supply — fire lift fed by a dedicated feeder in fire-survival cable, changing over to emergency DG within seconds, with an automatic rescue device to bring the car to a landing
B.Fireman's lift supply — CPCB requires an acoustic enclosure limiting noise to 75 dB(A) at 1 m and an exhaust stack height of building height plus 0.2 × √kVA metres, with ventilated fuel storage
C.Fireman's lift supply — IS 17505 / BS 6387 CWZ cables that keep circuit integrity at 950 °C with water spray and mechanical shock, specified for fire alarm, fire pumps, lifts and smoke extraction feeds
D.Fireman's lift supply — supervisory software that integrates HVAC, lighting, fire, access and energy meters over BACnet, Modbus or KNX for monitoring, scheduling and alarm handling
Answer + AI explanation with Pro
13. What is Fire survival cables?
Mid
A.IS 17505 / BS 6387 CWZ cables that keep circuit integrity at 950 °C with water spray and mechanical shock, specified for fire alarm, fire pumps, lifts and smoke extraction feeds
B.escape routes must stay lit at about 1 lux or more from self-contained or central-battery luminaires when normal supply fails, with illuminated exit signage, for 1–3 hours
C.supervisory software that integrates HVAC, lighting, fire, access and energy meters over BACnet, Modbus or KNX for monitoring, scheduling and alarm handling
D.National Building Code section on electrical and allied installations: supply layout, substation location, distribution, earthing, lightning protection and safety in buildings
Answer + AI explanation with Pro
14. Which term means: "IS 17505 / BS 6387 CWZ cables that keep circuit integrity at 950 °C with water spray and mechanical shock, specified for fire alarm, fire pumps, lifts and smoke extraction feeds"?
Mid
A.Fireman's lift supply
B.ELV systems
C.DG room norms
D.Fire survival cables
Answer + AI explanation with Pro
15. Which statement is correct?
Mid
A.Fire survival cables — extra-low-voltage services below 50 V AC or 120 V DC such as CCTV, access control, public address, structured cabling and intrusion detection, run in containment separate from power
B.Fire survival cables — IS 17505 / BS 6387 CWZ cables that keep circuit integrity at 950 °C with water spray and mechanical shock, specified for fire alarm, fire pumps, lifts and smoke extraction feeds
C.Fire survival cables — CPCB requires an acoustic enclosure limiting noise to 75 dB(A) at 1 m and an exhaust stack height of building height plus 0.2 × √kVA metres, with ventilated fuel storage
D.Fire survival cables — Indian code for automatic fire detection and alarm systems covering detector selection and spacing, zoning, control panel and loop wiring, in conventional or addressable form
Answer + AI explanation with Pro
16. What is ELV systems?
Junior
A.Indian code for automatic fire detection and alarm systems covering detector selection and spacing, zoning, control panel and loop wiring, in conventional or addressable form
B.fire lift fed by a dedicated feeder in fire-survival cable, changing over to emergency DG within seconds, with an automatic rescue device to bring the car to a landing
C.extra-low-voltage services below 50 V AC or 120 V DC such as CCTV, access control, public address, structured cabling and intrusion detection, run in containment separate from power
D.IEC 62305-2 compares the risk of loss of life against a tolerable 10⁻⁵ per year using collection area, flash density and structure factors to decide the LPS class needed
Answer + AI explanation with Pro
17. Which term means: "extra-low-voltage services below 50 V AC or 120 V DC such as CCTV, access control, public address, structured cabling and intrusion detection, run in containment separate from power"?
Junior
A.ELV systems
B.Emergency lighting
C.Fireman's lift supply
D.Fire survival cables
Answer + AI explanation with Pro
18. Which statement is correct?
Junior
A.ELV systems — escape routes must stay lit at about 1 lux or more from self-contained or central-battery luminaires when normal supply fails, with illuminated exit signage, for 1–3 hours
B.ELV systems — Indian code for automatic fire detection and alarm systems covering detector selection and spacing, zoning, control panel and loop wiring, in conventional or addressable form
C.ELV systems — extra-low-voltage services below 50 V AC or 120 V DC such as CCTV, access control, public address, structured cabling and intrusion detection, run in containment separate from power
D.ELV systems — IEC 62305-2 compares the risk of loss of life against a tolerable 10⁻⁵ per year using collection area, flash density and structure factors to decide the LPS class needed
Answer + AI explanation with Pro
19. What is Integrated building management system?
Mid
A.extra-low-voltage services below 50 V AC or 120 V DC such as CCTV, access control, public address, structured cabling and intrusion detection, run in containment separate from power
B.escape routes must stay lit at about 1 lux or more from self-contained or central-battery luminaires when normal supply fails, with illuminated exit signage, for 1–3 hours
C.supervisory software that integrates HVAC, lighting, fire, access and energy meters over BACnet, Modbus or KNX for monitoring, scheduling and alarm handling
D.CPCB requires an acoustic enclosure limiting noise to 75 dB(A) at 1 m and an exhaust stack height of building height plus 0.2 × √kVA metres, with ventilated fuel storage
Answer + AI explanation with Pro
20. Which term means: "supervisory software that integrates HVAC, lighting, fire, access and energy meters over BACnet, Modbus or KNX for monitoring, scheduling and alarm handling"?
Mid
A.IS 2189
B.Integrated building management system
C.NBC 2016 Part 8 Section 2
D.DG room norms
Answer + AI explanation with Pro
21. Which statement is correct?
Mid
A.Integrated building management system — CPCB requires an acoustic enclosure limiting noise to 75 dB(A) at 1 m and an exhaust stack height of building height plus 0.2 × √kVA metres, with ventilated fuel storage
B.Integrated building management system — supervisory software that integrates HVAC, lighting, fire, access and energy meters over BACnet, Modbus or KNX for monitoring, scheduling and alarm handling
C.Integrated building management system — IS 17505 / BS 6387 CWZ cables that keep circuit integrity at 950 °C with water spray and mechanical shock, specified for fire alarm, fire pumps, lifts and smoke extraction feeds
D.Integrated building management system — escape routes must stay lit at about 1 lux or more from self-contained or central-battery luminaires when normal supply fails, with illuminated exit signage, for 1–3 hours
Answer + AI explanation with Pro
22. What is DG room norms?
Mid
A.CPCB requires an acoustic enclosure limiting noise to 75 dB(A) at 1 m and an exhaust stack height of building height plus 0.2 × √kVA metres, with ventilated fuel storage
B.supervisory software that integrates HVAC, lighting, fire, access and energy meters over BACnet, Modbus or KNX for monitoring, scheduling and alarm handling
C.National Building Code section on electrical and allied installations: supply layout, substation location, distribution, earthing, lightning protection and safety in buildings
D.extra-low-voltage services below 50 V AC or 120 V DC such as CCTV, access control, public address, structured cabling and intrusion detection, run in containment separate from power
Answer + AI explanation with Pro
23. Which term means: "CPCB requires an acoustic enclosure limiting noise to 75 dB(A) at 1 m and an exhaust stack height of building height plus 0.2 × √kVA metres, with ventilated fuel storage"?
Mid
A.Integrated building management system
B.Fireman's lift supply
C.DG room norms
D.IS 2189
Answer + AI explanation with Pro
24. Which statement is correct?
Mid
A.DG room norms — Indian code for automatic fire detection and alarm systems covering detector selection and spacing, zoning, control panel and loop wiring, in conventional or addressable form
B.DG room norms — supervisory software that integrates HVAC, lighting, fire, access and energy meters over BACnet, Modbus or KNX for monitoring, scheduling and alarm handling
C.DG room norms — CPCB requires an acoustic enclosure limiting noise to 75 dB(A) at 1 m and an exhaust stack height of building height plus 0.2 × √kVA metres, with ventilated fuel storage
D.DG room norms — fire lift fed by a dedicated feeder in fire-survival cable, changing over to emergency DG within seconds, with an automatic rescue device to bring the car to a landing
Answer + AI explanation with Pro
25. What is Lightning risk assessment?
Senior
A.Indian code for automatic fire detection and alarm systems covering detector selection and spacing, zoning, control panel and loop wiring, in conventional or addressable form
B.escape routes must stay lit at about 1 lux or more from self-contained or central-battery luminaires when normal supply fails, with illuminated exit signage, for 1–3 hours
C.IS 17505 / BS 6387 CWZ cables that keep circuit integrity at 950 °C with water spray and mechanical shock, specified for fire alarm, fire pumps, lifts and smoke extraction feeds
D.IEC 62305-2 compares the risk of loss of life against a tolerable 10⁻⁵ per year using collection area, flash density and structure factors to decide the LPS class needed
Answer + AI explanation with Pro
26. Which term means: "IEC 62305-2 compares the risk of loss of life against a tolerable 10⁻⁵ per year using collection area, flash density and structure factors to decide the LPS class needed"?
Senior
A.Emergency lighting
B.NBC 2016 Part 8 Section 2
C.Lightning risk assessment
D.IS 2189
Answer + AI explanation with Pro
27. Which statement is correct?
Senior
A.Lightning risk assessment — supervisory software that integrates HVAC, lighting, fire, access and energy meters over BACnet, Modbus or KNX for monitoring, scheduling and alarm handling
B.Lightning risk assessment — IEC 62305-2 compares the risk of loss of life against a tolerable 10⁻⁵ per year using collection area, flash density and structure factors to decide the LPS class needed
C.Lightning risk assessment — CPCB requires an acoustic enclosure limiting noise to 75 dB(A) at 1 m and an exhaust stack height of building height plus 0.2 × √kVA metres, with ventilated fuel storage
D.Lightning risk assessment — escape routes must stay lit at about 1 lux or more from self-contained or central-battery luminaires when normal supply fails, with illuminated exit signage, for 1–3 hours
Answer + AI explanation with Pro
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