Question 1

Which of the following is a hypersonic cruise missile developed by India?

Accepted Answer

BrahMos is a supersonic cruise missile, not hypersonic. Hypersonic weapons travel at speeds exceeding Mach 5. India's hypersonic cruise missile project is still under development. However, BrahMos Hypersonic (BrahMos-II) is in advanced stages of development and is designed to travel at Mach 7+.

Question 2

What is the primary purpose of the INS Vikrant, India's first indigenous aircraft carrier?

Accepted Answer

INS Vikrant is India's first indigenous aircraft carrier commissioned in September 2023. Its primary purpose is to project naval power, conduct carrier-based air operations, and enhance India's maritime security and defence capabilities in the Indian Ocean region.

Question 3

Which defence technology is used in the Ballistic Missile Defence (BMD) system developed by India?

Accepted Answer

India's Ballistic Missile Defence (BMD) system uses phased array radar, command centres, and interceptor missiles. The system includes both exoatmospheric (high-altitude) and endoatmospheric (low-altitude) interception capabilities using advanced radar and missile guidance systems.

Question 4

What is the maximum operational range of the Agni-V intercontinental ballistic missile?

Accepted Answer

The Agni-V is India's long-range intercontinental ballistic missile (ICBM) with a range of over 5,000 km. It was first successfully tested in 2012 and is capable of carrying nuclear warheads. The 'V' in Agni-V denotes the fifth generation of the Agni missile series.

Question 5

Which of the following is a key feature of the Tejas light combat aircraft?

Accepted Answer

The HAL Tejas is India's indigenously designed and developed light combat aircraft (LCA). Key features include advanced avionics, fly-by-wire control system, composite materials for reduced weight, and capability to carry air-to-air and air-to-ground weapons. It was first inducted into the Indian Air Force in 2016.

Question 6

Which of the following is a key feature of India's Ballistic Missile Defence (BMD) system?

Accepted Answer

India's Ballistic Missile Defence system, also known as the Air Defence System (ADS), is a two-tier air defence system designed to neutralize aircraft, cruise missiles, and ballistic missiles. The system consists of two tiers: the Advanced Air Defence (AAD) system for high-altitude interception and the Prithvi Air Defence (PAD) system for lower-altitude targets. The AAD can intercept targets at altitudes of 30 km and above, while the PAD operates at lower altitudes. Both systems use indigenously developed radar and guidance technology.

Question 7

Which Indian defence system is designed to intercept and destroy aircraft, cruise missiles, and drones at medium to long range?

Accepted Answer

The Akash missile system is India's medium-range surface-to-air guided missile developed by DRDO. It can engage targets at ranges up to 30 km and altitudes up to 20 km, making it suitable for air defence against aircraft, helicopters, and cruise missiles.

Question 8

The INS Vikrant, India's first indigenous aircraft carrier, was commissioned into the Indian Navy in which year?

Accepted Answer

INS Vikrant, India's first indigenously designed and built aircraft carrier, was commissioned on 2 September 2022. It is a 40,000-tonne carrier with a displacement of 40,000 tonnes and can carry 30 aircraft including helicopters and fighter jets.

Question 9

Which defence research organization in India is primarily responsible for the development of ballistic missiles like Agni and Prithvi?

Accepted Answer

The Defence Research and Development Organisation (DRDO) is India's premier defence research agency responsible for developing advanced defence technologies including ballistic missiles (Agni, Prithvi), cruise missiles (Brahmos), and air defence systems.

Question 10

The BrahMos missile is a joint venture between India and which country?

Accepted Answer

BrahMos is a supersonic cruise missile developed jointly by India's DRDO and Russia's NPO Mashinostroyeniya. The name 'BrahMos' is derived from two rivers: Brahmaputra (India) and Moskva (Russia), symbolizing the Indo-Russian partnership.

Question 11

Which of the following is the primary propulsion system used in India's Arihant-class submarines?

Accepted Answer

India's Arihant-class submarines, developed under the Advanced Technology Vessel (ATV) programme, are powered by a pressurized heavy-water moderated nuclear reactor. This makes them India's first indigenously designed and built nuclear-powered ballistic missile submarines (SSBNs). The reactor provides the submarine with long underwater endurance and stealth capabilities essential for strategic deterrence.

Question 12

Which Indian defence system is designed to detect and track aircraft, missiles, and other aerial threats at long range using electromagnetic waves?

Accepted Answer

Radar (Radio Detection and Ranging) is a detection system that uses radio waves to identify the presence, direction, distance, and speed of objects. India's defence forces use advanced radar systems like the Rajendra radar (part of the Akash missile system) and the Swordfish radar for air defence.

Question 13

The Brahmos missile, a joint venture between India and Russia, is a supersonic cruise missile. What is its approximate maximum speed in terms of Mach number?

Accepted Answer

The Brahmos missile is capable of traveling at speeds of approximately Mach 2.8 to Mach 3, making it one of the fastest cruise missiles in the world. It was developed by BrahMos Aerospace, a joint venture between India's DRDO and Russia's NPO Mashinostroyeniya.

Question 14

Which stealth technology principle is primarily used in the design of the HAL Tejas fighter aircraft to reduce its radar cross-section (RCS)?

Accepted Answer

The HAL Tejas uses angular fuselage design, composite materials, and shaping techniques to minimize radar reflections. The aircraft's design incorporates stealth principles such as reduced radar cross-section through careful shaping of the airframe and use of radar-absorbing materials.

Question 15

The Akash missile system, developed by India's DRDO, is a medium-range surface-to-air guided missile. What is its approximate effective range?

Accepted Answer

The Akash missile system has an effective range of approximately 25-30 km in its standard configuration. The Akash-NG (Next Generation) variant, tested in 2022, has an extended range of up to 60 km. The system is designed to defend against aircraft, helicopters, and cruise missiles.

Question 16

Which principle of physics is utilized in the guidance system of the Agni-V ballistic missile to maintain its trajectory and ensure accurate target acquisition?

Accepted Answer

The Agni-V uses an Inertial Navigation System (INS) based on the principles of Newton's laws of motion and inertia. The INS contains accelerometers and gyroscopes that measure changes in velocity and orientation, allowing the missile to calculate its position and maintain its trajectory without external signals.

Question 17

Which Indian defence system is designed to detect and neutralize low-flying aircraft and cruise missiles, and was jointly developed by India and Israel?

Accepted Answer

The David's Sling (Tactical High Energy Laser) system, known as Pralay in India, is a medium-range air defence system developed through Indo-Israeli collaboration. However, the most accurate answer refers to the SPYDER (Skyguard Protected Deployable Early Radar) air defence system, which is the primary medium-range surface-to-air missile system jointly developed by India and Israel specifically designed to counter low-flying aircraft and cruise missiles. It has been inducted into the Indian Air Force and Army.

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