Which statement about the High-Altitude Platform is correct?

The correct answer is the Aerial Delivery Research and Development Establishment (ADRDE), Agra. The release states that this laboratory is designing and developing the High-Altitude Platform, a lighter-than-air system meant to work as a long endurance stratospheric aerial surveillance platform. Option B is wrong because the electronics laboratory at Hyderabad is not named as the developer of this platform. Option C is wrong because the establishment at Bengaluru is not credited with the High-Altitude Platform in this trial. Option D is wrong for the same reason; no such centre is mentioned in connection with the system. Candidates should connect the laboratory with the kind of work it does: aerial delivery systems and lighter-than-air platforms, which is why the high-altitude airship project sits with it. The trial itself was carried out in coordination with the Indian Air Force, CEMILAC, the Directorate General of Civil Aviation and the Airports Authority of India.

The correct answer is 21 km. In the experimental flight the High-Altitude Platform climbed to that altitude above mean sea level, and it then remained at 20 km above mean sea level for more than 30 minutes before it was commanded to descend back to the ground. The system was recovered successfully and the flight performance data was analysed afterwards. Option A is wrong because the platform went considerably higher than that height. Option B is wrong because, although the platform passed through that level on the way up, the altitude attained in the trial was greater. Option D is wrong because the platform did not reach any such height in this flight. For the examination, keep the two altitudes apart in memory: the peak reached and the level at which the platform loitered, along with the duration of that loiter.

The correct answer is Odisha. HAL's Koraput Division sits in that state, and Odisha Chief Minister Mohan Charan Majhi attended the delivery event. The Defence Minister spoke of Odisha's long coastline, ports, mineral resources and skilled manpower, of the Integrated Test Range at Chandipur, and of the state's approval for an aerospace and defence equipment manufacturing complex at Gajamara in Dhenkanal. Option B, Karnataka, hosts other HAL facilities and is therefore a plausible distractor, but Koraput is not there. Option C and option D are not where this Division is based. Candidates should tie Koraput to Odisha and remember Chandipur and Gajamara as the other defence-linked locations named in the state. The Minister also urged HAL to build Koraput into a wider aerospace propulsion ecosystem by mentoring MSMEs, backing start-ups and young engineers and working with universities and research institutions in the state.

The correct answer is the Advanced Medium Combat Aircraft (AMCA) programme. The Defence Minister said aerospace self-reliance must extend to an indigenous aero-engine capability, especially for the AMCA, and pointed to a proposed investment of around Rs 5,000 crore, indigenisation of raw materials together with Mishra Dhatu Nigam Limited and the setting up of India's first home-built high-thrust engine testing facility. Option C, the Prachand Light Combat Helicopter, is served instead by the Shakti engine line, so it is wrong. Option D refers to the AL-31FP engines ordered for the existing Su-30MKI fleet, a separate matter. Option A is not the programme named for the high-thrust engine. The distinction between helicopter engines, fighter engines in service and the future high-thrust engine is worth holding on to.

The correct answer is Rs 218 crore. The second Shakti engine line carries this outlay and will be able to produce up to 100 engines a year once it is fully established by 2028-29, feeding indigenous helicopters such as the Dhruv Advanced Light Helicopter and the Prachand Light Combat Helicopter. Option C, Rs 335 crore, is the separate investment being made to lift annual AL-31FP capacity from 30 to 50 engines, so it belongs to a different announcement of the same day and is a common trap. Option A is not among the figures announced. Option D does not relate to this line either. Keep the two figures distinct: Rs 218 crore for the Shakti line and Rs 335 crore for AL-31FP capacity.