Q80. Who was appointed chairperson of the CERC in 2023?
[MP Police ASI and Subedar Steno, 17 December 2025 Shift 2]
(A) Jishnu Barua
(B) Anil Kumar Jain
(C) P. K. Pujari
(D) Arun Goyal
Answer: (A) Jishnu Barua
Explanation: Jishnu Barua took charge as chairperson of the Central Electricity Regulatory Commission in 2023. CERC regulates key central and inter-state electricity matters including tariffs for specified generators, transmission and electricity trading within its statutory jurisdiction.
Q79. Which district became known as the first to meet its entire electricity demand through solar power?
[RRB NTPC (UG) CBT-I, 21 August 2025 Shift 3]
(A) Silvassa
(B) Kavaratti
(C) Leh
(D) Diu
Answer: (D) Diu
Explanation: Diu became known for meeting local electricity demand through solar installations, including ground-mounted and rooftop plants. It is frequently cited as a pioneering example of distributed and utility-scale solar adoption in a small island district.
Q78. What nuclear power capacity does Union Budget 2025–26 envisage for India by 2047?
[RRB Group D, 08 December 2025 Shift 1]
(A) 80 GW
(B) 100 GW
(C) 150 GW
(D) 50 GW
Answer: (B) 100 GW
Explanation: The Nuclear Energy Mission announced the long-term ambition of 100 GW of nuclear capacity by 2047. This is a planning goal rather than installed capacity in the examination year, and achieving it requires additional reactors and financing.
Q77. In which year was NHPC Limited established?
[DSSSB TGT Sanskrit, 27 August 2025 Shift 2]
(A) 1975
(B) 1965
(C) 1995
(D) 1985
Answer: (A) 1975
Explanation: NHPC was established in 1975 to develop hydroelectric projects in India. It is a public-sector company under the Ministry of Power and is associated with dam-based and run-of-river hydropower schemes across several states.
Q76. With whose cooperation was the NTPC project at Korba established in 1982–83?
[CGPSC Prelims, 09 February 2025]
(A) World Bank
(B) Asian Development Bank
(C) State Bank of India
(D) Central government grant only
Answer: (A) World Bank
Explanation: World Bank support contributed to the development of NTPC’s Korba thermal project in Chhattisgarh. Korba is an important coal and power-generation centre, where fuel availability enabled the expansion of large thermal electricity units.
Q75. Rajasthan’s Anta power project is based mainly on which energy source?
[RSMSSB JE Civil, 07 February 2025]
(A) Coal
(B) Natural gas
(C) Atomic energy
(D) Water
Answer: (B) Natural gas
Explanation: NTPC’s Anta station in Rajasthan’s Baran district is a gas-based combined-cycle power plant. Such stations use gas turbines and recover exhaust heat in a steam cycle, improving fuel efficiency compared with simple-cycle generation.
Q74. Which nuclear power plant–state pair is incorrectly matched?
[IB Security Assistant, 30 September 2025 Shift 4]
(A) Kaiga – Karnataka
(B) Narora – Gujarat
(C) Madras – Tamil Nadu
(D) Tarapur – Maharashtra
Answer: (B) Narora – Gujarat
Explanation: Narora is situated in Uttar Pradesh, not Gujarat. Kaiga is in Karnataka, Madras Atomic Power Station at Kalpakkam is in Tamil Nadu, and Tarapur is in Maharashtra. Plant–state pairings frequently appear in railway and SSC examinations.
Q73. Which listed Indian state has the highest assessed wind energy potential?
[RRB JE Civil, 22 April 2025 Shift 2]
(A) Punjab
(B) Gujarat
(C) Himachal Pradesh
(D) Uttar Pradesh
Answer: (B) Gujarat
Explanation: Gujarat has extensive coastal and inland wind resources and ranks high in assessed wind-power potential at standard hub heights. Assessment of potential differs from actual installed generation, which depends on investment, transmission access and turbine development.
Q72. If wind speed doubles, by what factor does wind-power density increase?
[RRB JE Electrical Re-exam, 04 June 2025]
(A) 6
(B) 8
(C) 4
(D) 2
Answer: (B) 8
Explanation: Available wind power per unit area is proportional to the cube of wind velocity, other variables held constant. Doubling wind speed therefore multiplies the theoretical power density by two cubed, or eight.
Q71. In which city is the Bhabha Atomic Research Centre located?
[Delhi Police Constable, 27 December 2025 Shift 2]
(A) Mumbai
(B) Bengaluru
(C) Hyderabad
(D) Kolkata
Answer: (A) Mumbai
Explanation: BARC is based at Trombay in Mumbai, Maharashtra. Its predecessor, the Atomic Energy Establishment Trombay, began work in 1954. The centre undertakes nuclear research, reactor development, isotope production and related scientific activities.
