30 Grid & Utility Operations 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.
Free to start: the 2-minute EE readiness check — six questions and a result.
A.IEGC requires system frequency to be held between 49.90 and 50.05 Hz, with generators giving primary response outside a ±0.03 Hz dead band
B.three-part tariff: capacity charge paid on declared availability, energy charge on scheduled energy, and a deviation charge for departing from the schedule
C.CERC regulation, 2023 edition in force from October 2023, setting connectivity, planning, operation, scheduling and protection obligations for all grid users
D.NLDC under Grid Controller of India (formerly POSOCO) at the top, five RLDCs for the NR, WR, SR, ER and NER regions, and an SLDC in each state
Answer + AI explanation with Pro
2. Which term means: "NLDC under Grid Controller of India (formerly POSOCO) at the top, five RLDCs for the NR, WR, SR, ER and NER regions, and an SLDC in each state"?
Junior
A.Islanding scheme
B.Energy management system
C.Black start
D.Load despatch hierarchy
Answer + AI explanation with Pro
3. Which statement is correct?
Junior
A.Load despatch hierarchy — CERC regulation, 2023 edition in force from October 2023, setting connectivity, planning, operation, scheduling and protection obligations for all grid users
B.Load despatch hierarchy — NLDC under Grid Controller of India (formerly POSOCO) at the top, five RLDCs for the NR, WR, SR, ER and NER regions, and an SLDC in each state
C.Load despatch hierarchy — aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23
D.Load despatch hierarchy — restoration after total collapse using hydro or gas units that can start without grid supply to energise dead lines and give station supply to thermal units, per RLDC procedures
Answer + AI explanation with Pro
4. What is Indian Electricity Grid Code?
Junior
A.df/dt and under-frequency relays separate a generating station with a matched load pocket from a collapsing grid, as Mumbai's scheme has done during regional disturbances
B.control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP
C.aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23
D.CERC regulation, 2023 edition in force from October 2023, setting connectivity, planning, operation, scheduling and protection obligations for all grid users
Answer + AI explanation with Pro
5. Which term means: "CERC regulation, 2023 edition in force from October 2023, setting connectivity, planning, operation, scheduling and protection obligations for all grid users"?
Junior
A.Indian Electricity Grid Code
B.Availability-based tariff
C.Islanding scheme
D.Load despatch hierarchy
Answer + AI explanation with Pro
6. Which statement is correct?
Junior
A.Indian Electricity Grid Code — CERC regulation, 2023 edition in force from October 2023, setting connectivity, planning, operation, scheduling and protection obligations for all grid users
B.Indian Electricity Grid Code — NLDC under Grid Controller of India (formerly POSOCO) at the top, five RLDCs for the NR, WR, SR, ER and NER regions, and an SLDC in each state
C.Indian Electricity Grid Code — CERC DSM Regulations 2022 charge each 15-minute block of deviation from schedule at a normal rate with frequency- and volume-linked multipliers, replacing unscheduled interchange
D.Indian Electricity Grid Code — IEGC requires system frequency to be held between 49.90 and 50.05 Hz, with generators giving primary response outside a ±0.03 Hz dead band
Answer + AI explanation with Pro
7. What is Grid frequency band?
Junior
A.IEGC requires system frequency to be held between 49.90 and 50.05 Hz, with generators giving primary response outside a ±0.03 Hz dead band
B.control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP
C.CERC DSM Regulations 2022 charge each 15-minute block of deviation from schedule at a normal rate with frequency- and volume-linked multipliers, replacing unscheduled interchange
D.aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23
Answer + AI explanation with Pro
8. Which term means: "IEGC requires system frequency to be held between 49.90 and 50.05 Hz, with generators giving primary response outside a ±0.03 Hz dead band"?
Junior
A.Load despatch hierarchy
B.Grid frequency band
C.Black start
D.Deviation settlement mechanism
Answer + AI explanation with Pro
9. Which statement is correct?
Junior
A.Grid frequency band — aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23
B.Grid frequency band — IEGC requires system frequency to be held between 49.90 and 50.05 Hz, with generators giving primary response outside a ±0.03 Hz dead band
C.Grid frequency band — three-part tariff: capacity charge paid on declared availability, energy charge on scheduled energy, and a deviation charge for departing from the schedule
D.Grid frequency band — CERC DSM Regulations 2022 charge each 15-minute block of deviation from schedule at a normal rate with frequency- and volume-linked multipliers, replacing unscheduled interchange
Answer + AI explanation with Pro
10. What is Availability-based tariff?
Mid
A.CERC regulation, 2023 edition in force from October 2023, setting connectivity, planning, operation, scheduling and protection obligations for all grid users
B.three-part tariff: capacity charge paid on declared availability, energy charge on scheduled energy, and a deviation charge for departing from the schedule
C.about 3–4% of energy wheeled on the ISTS, computed weekly by the RLDC from metered injections and drawals and apportioned to all users of the region pro rata
D.IEGC requires system frequency to be held between 49.90 and 50.05 Hz, with generators giving primary response outside a ±0.03 Hz dead band
Answer + AI explanation with Pro
11. Which term means: "three-part tariff: capacity charge paid on declared availability, energy charge on scheduled energy, and a deviation charge for departing from the schedule"?
Mid
A.Deviation settlement mechanism
B.Availability-based tariff
C.Islanding scheme
D.Load despatch hierarchy
Answer + AI explanation with Pro
12. Which statement is correct?
Mid
A.Availability-based tariff — aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23
B.Availability-based tariff — IEGC requires system frequency to be held between 49.90 and 50.05 Hz, with generators giving primary response outside a ±0.03 Hz dead band
C.Availability-based tariff — df/dt and under-frequency relays separate a generating station with a matched load pocket from a collapsing grid, as Mumbai's scheme has done during regional disturbances
D.Availability-based tariff — three-part tariff: capacity charge paid on declared availability, energy charge on scheduled energy, and a deviation charge for departing from the schedule
Answer + AI explanation with Pro
13. What is Deviation settlement mechanism?
Senior
A.CERC regulation, 2023 edition in force from October 2023, setting connectivity, planning, operation, scheduling and protection obligations for all grid users
B.IEGC requires system frequency to be held between 49.90 and 50.05 Hz, with generators giving primary response outside a ±0.03 Hz dead band
C.control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP
D.CERC DSM Regulations 2022 charge each 15-minute block of deviation from schedule at a normal rate with frequency- and volume-linked multipliers, replacing unscheduled interchange
Answer + AI explanation with Pro
14. Which term means: "CERC DSM Regulations 2022 charge each 15-minute block of deviation from schedule at a normal rate with frequency- and volume-linked multipliers, replacing unscheduled interchange"?
Senior
A.Availability-based tariff
B.AT&C losses
C.Inter-state transmission losses
D.Deviation settlement mechanism
Answer + AI explanation with Pro
15. Which statement is correct?
Senior
A.Deviation settlement mechanism — df/dt and under-frequency relays separate a generating station with a matched load pocket from a collapsing grid, as Mumbai's scheme has done during regional disturbances
B.Deviation settlement mechanism — control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP
C.Deviation settlement mechanism — CERC DSM Regulations 2022 charge each 15-minute block of deviation from schedule at a normal rate with frequency- and volume-linked multipliers, replacing unscheduled interchange
D.Deviation settlement mechanism — NLDC under Grid Controller of India (formerly POSOCO) at the top, five RLDCs for the NR, WR, SR, ER and NER regions, and an SLDC in each state
Answer + AI explanation with Pro
16. What is Energy management system?
Mid
A.control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP
B.aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23
C.NLDC under Grid Controller of India (formerly POSOCO) at the top, five RLDCs for the NR, WR, SR, ER and NER regions, and an SLDC in each state
D.restoration after total collapse using hydro or gas units that can start without grid supply to energise dead lines and give station supply to thermal units, per RLDC procedures
Answer + AI explanation with Pro
17. Which term means: "control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP"?
Mid
A.Inter-state transmission losses
B.Energy management system
C.Grid frequency band
D.Indian Electricity Grid Code
Answer + AI explanation with Pro
18. Which statement is correct?
Mid
A.Energy management system — control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP
B.Energy management system — about 3–4% of energy wheeled on the ISTS, computed weekly by the RLDC from metered injections and drawals and apportioned to all users of the region pro rata
C.Energy management system — IEGC requires system frequency to be held between 49.90 and 50.05 Hz, with generators giving primary response outside a ±0.03 Hz dead band
D.Energy management system — CERC regulation, 2023 edition in force from October 2023, setting connectivity, planning, operation, scheduling and protection obligations for all grid users
Answer + AI explanation with Pro
19. What is Islanding scheme?
Mid
A.df/dt and under-frequency relays separate a generating station with a matched load pocket from a collapsing grid, as Mumbai's scheme has done during regional disturbances
B.three-part tariff: capacity charge paid on declared availability, energy charge on scheduled energy, and a deviation charge for departing from the schedule
C.control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP
D.IEGC requires system frequency to be held between 49.90 and 50.05 Hz, with generators giving primary response outside a ±0.03 Hz dead band
Answer + AI explanation with Pro
20. Which term means: "df/dt and under-frequency relays separate a generating station with a matched load pocket from a collapsing grid, as Mumbai's scheme has done during regional disturbances"?
Mid
A.Grid frequency band
B.Energy management system
C.Islanding scheme
D.AT&C losses
Answer + AI explanation with Pro
21. Which statement is correct?
Mid
A.Islanding scheme — CERC DSM Regulations 2022 charge each 15-minute block of deviation from schedule at a normal rate with frequency- and volume-linked multipliers, replacing unscheduled interchange
B.Islanding scheme — restoration after total collapse using hydro or gas units that can start without grid supply to energise dead lines and give station supply to thermal units, per RLDC procedures
C.Islanding scheme — df/dt and under-frequency relays separate a generating station with a matched load pocket from a collapsing grid, as Mumbai's scheme has done during regional disturbances
D.Islanding scheme — aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23
Answer + AI explanation with Pro
22. What is Black start?
Senior
A.aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23
B.three-part tariff: capacity charge paid on declared availability, energy charge on scheduled energy, and a deviation charge for departing from the schedule
C.restoration after total collapse using hydro or gas units that can start without grid supply to energise dead lines and give station supply to thermal units, per RLDC procedures
D.df/dt and under-frequency relays separate a generating station with a matched load pocket from a collapsing grid, as Mumbai's scheme has done during regional disturbances
Answer + AI explanation with Pro
23. Which term means: "restoration after total collapse using hydro or gas units that can start without grid supply to energise dead lines and give station supply to thermal units, per RLDC procedures"?
Senior
A.Inter-state transmission losses
B.Deviation settlement mechanism
C.Black start
D.Energy management system
Answer + AI explanation with Pro
24. Which statement is correct?
Senior
A.Black start — df/dt and under-frequency relays separate a generating station with a matched load pocket from a collapsing grid, as Mumbai's scheme has done during regional disturbances
B.Black start — control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP
C.Black start — restoration after total collapse using hydro or gas units that can start without grid supply to energise dead lines and give station supply to thermal units, per RLDC procedures
D.Black start — CERC DSM Regulations 2022 charge each 15-minute block of deviation from schedule at a normal rate with frequency- and volume-linked multipliers, replacing unscheduled interchange
Answer + AI explanation with Pro
25. What is Inter-state transmission losses?
Mid
A.control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP
B.about 3–4% of energy wheeled on the ISTS, computed weekly by the RLDC from metered injections and drawals and apportioned to all users of the region pro rata
C.NLDC under Grid Controller of India (formerly POSOCO) at the top, five RLDCs for the NR, WR, SR, ER and NER regions, and an SLDC in each state
D.aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23
Answer + AI explanation with Pro
26. Which term means: "about 3–4% of energy wheeled on the ISTS, computed weekly by the RLDC from metered injections and drawals and apportioned to all users of the region pro rata"?
Mid
A.Load despatch hierarchy
B.Availability-based tariff
C.AT&C losses
D.Inter-state transmission losses
Answer + AI explanation with Pro
27. Which statement is correct?
Mid
A.Inter-state transmission losses — control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP
B.Inter-state transmission losses — CERC DSM Regulations 2022 charge each 15-minute block of deviation from schedule at a normal rate with frequency- and volume-linked multipliers, replacing unscheduled interchange
C.Inter-state transmission losses — NLDC under Grid Controller of India (formerly POSOCO) at the top, five RLDCs for the NR, WR, SR, ER and NER regions, and an SLDC in each state
D.Inter-state transmission losses — about 3–4% of energy wheeled on the ISTS, computed weekly by the RLDC from metered injections and drawals and apportioned to all users of the region pro rata
Answer + AI explanation with Pro
28. What is AT&C losses?
Junior
A.CERC regulation, 2023 edition in force from October 2023, setting connectivity, planning, operation, scheduling and protection obligations for all grid users
B.three-part tariff: capacity charge paid on declared availability, energy charge on scheduled energy, and a deviation charge for departing from the schedule
C.df/dt and under-frequency relays separate a generating station with a matched load pocket from a collapsing grid, as Mumbai's scheme has done during regional disturbances
D.aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23
Answer + AI explanation with Pro
29. Which term means: "aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23"?
Junior
A.Indian Electricity Grid Code
B.Islanding scheme
C.Grid frequency band
D.AT&C losses
Answer + AI explanation with Pro
30. Which statement is correct?
Junior
A.AT&C losses — df/dt and under-frequency relays separate a generating station with a matched load pocket from a collapsing grid, as Mumbai's scheme has done during regional disturbances
B.AT&C losses — control-centre software above SCADA that runs state estimation, contingency analysis and automatic generation control on telemetry received over IEC 60870-5-104 and ICCP
C.AT&C losses — aggregate technical and commercial loss equals one minus billing efficiency times collection efficiency; India's figure fell from about 22% in FY21 to about 15% by FY23
D.AT&C losses — CERC DSM Regulations 2022 charge each 15-minute block of deviation from schedule at a normal rate with frequency- and volume-linked multipliers, replacing unscheduled interchange
Answer + AI explanation with Pro
Free to start
Start with a free readiness check
Sign up free for the 2-minute EE readiness check and a scored result. Answers, explanations and the AI tutor on every Grid & Utility Operations question come with Pro.