Building Electrical & Fire Systems interview questions
27 real Building Electrical & Fire Systems questions from the Plant & Utility Ops bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.
1. What is NBC 2016 Part 8 Section 2?
Junior
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
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"?
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
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
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"?
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
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
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"?
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
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
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"?
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
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
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"?
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
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
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"?
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
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
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"?
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
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
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"?
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
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
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"?
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
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