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Science & TechnologyEasyAsked in: NDA · NDA-I 2025, GAT

India's Gas Turbine Research Establishment (GTRE), part of the Defence Research and Development Organisation (DRDO) has developed an aero-engine which will potentially make India self-reliance in aero-engine technology. What is the name of the engine?

  1. A.Ganga
  2. B.Yamuna
  3. C.Krishna
  4. D.Kaveri

Correct answer

D. Kaveri

Explanation

The correct answer is D, Kaveri. Kaveri is the turbofan aero-engine developed by the Gas Turbine Research Establishment of DRDO in Bengaluru.

The Kaveri project began in the late 1980s to power the Light Combat Aircraft Tejas. The engine could not reach the thrust that Tejas needed, so Tejas flies with the American GE F404 engine, but the work on Kaveri built India's own expertise in designing jet engines. A non-afterburning version of the Kaveri is being developed for unmanned combat aircraft such as the Ghatak. The project is seen as a key step towards self-reliance, because very few countries can design and build military jet engines on their own.

A is wrong because Ganga is not the name of a DRDO aero-engine. B is wrong because Yamuna is not an engine of GTRE. C is wrong because Krishna is also not the name of any Indian aero-engine.

Exam tip: GTRE is in Bengaluru, its engine is Kaveri, and it was first meant for the Tejas LCA.

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Q1.Science & TechnologyAsked in: CDS · CDS-I 2022, GKEasy

The terms 'Pinaka and Smerch' mentioned in news recently refer to

  1. A.Cruise missiles
  2. B.Nuclear-powered submarines
  3. C.Rocket launcher systems
  4. D.Weaponised drones
Show answer
Correct answer: C. Rocket launcher systems

Pinaka and Smerch are both multi-barrel rocket launchers used by the Indian Army's artillery. Pinaka was developed by DRDO, with the Armament Research and Development Establishment at Pune as the lead laboratory, and is named after the bow of Lord Shiva.

Q2.Science & TechnologyAsked in: CDS · CDS-II 2022, GKMedium

P-75I (or P-75 India) project refers to manufacture of

  1. A.Diesel-electric submarines.
  2. B.Nuclear-powered submarines.
  3. C.Aircraft carrier warships.
  4. D.Field guns.
Show answer
Correct answer: A. Diesel-electric submarines.

Project 75 India, or P-75I, is the Indian Navy's plan to build six advanced conventional diesel-electric submarines in India. Its key requirement is Air Independent Propulsion, which lets a conventional submarine stay submerged for much longer without surfacing to charge its batteries.

Q3.Science & TechnologyAsked in: CDS · CDS-II 2025, GKMedium

Which of the following statements about India's military arsenal is/are correct ? 1. HAMMER is a weapon system built for the Rafale fighter aircraft. 2. SCALP cruise missile is also known as Storm Shadow. 3. BrahMos missiles are built under a joint venture between India and Russia. Select the answer using the code given below :

  1. A.1 and 2 only
  2. B.2 and 3 only
  3. C.1, 2 and 3
  4. D.3 only
Show answer
Correct answer: C. 1, 2 and 3

All three statements describe the weapons correctly. HAMMER, short for Highly Agile Modular Munition Extended Range, is a French precision-guided air-to-ground bomb kit made by Safran; India bought it to arm its Rafale jets, which can strike targets tens of kilometres away with it.

Q4.Science & TechnologyAsked in: CDS · CDS-I 2022, GKHard

Which one of the following statements is correct regarding LOFAR (Low Frequency Array)?

  1. A.It is the world's most powerful radio antenna.
  2. B.It is a space technology launched by NASA to discover exoplanets.
  3. C.It is an arrangement of satellites in space for the purpose of creating Satellite Navigation System.
  4. D.It is a wireless communication technology for 5G services.
Show answer
Correct answer: A. It is the world's most powerful radio antenna.

LOFAR, the Low Frequency Array, is a huge radio telescope network built by ASTRON in the Netherlands, described as the largest and most sensitive radio telescope working at low frequencies.

Q5.Science & TechnologyAsked in: CDS · CDS-II 2022, GKEasy

The terms 'Ethereum, Solana, Polkadot and Tether', sometimes mentioned in the news, refer to

  1. A.Cryptocurrencies
  2. B.Earth Observation Satellites
  3. C.Hypersonic Cruise Missiles
  4. D.Virtual Private Network service providers
Show answer
Correct answer: A. Cryptocurrencies

Ethereum, Solana, Polkadot and Tether are all names from the world of blockchain-based digital currencies. A cryptocurrency is a digital asset recorded on a blockchain, a shared ledger kept by many computers, and secured by cryptography rather than issued by a central bank.