Science And Technology (Railway)

Total Questions: 60

31. X-band synthetic aperture radar has been used in which satellite? [RRB NTPC CBT-1 Exam, 15.03.2021 (Shift-I)]

Correct Answer: (3) RISAT-2B
Solution:RISAT-2B is an indigenously developed Synthetic Aperture Radar (SAR) imaging satellite operating in X Band with 3.6 m radial rib antenna.

• RISAT-2B, or Radar Imaging Satellite-2B was launched on 22 May 2019.

• RISAT (Radar Imaging Satellite) is a series of Indian radar imaging reconnaissance satellites built by ISRO.

32. EMISAT is which type of satellite launched by ISRO? [RRB NTPC CBT-1 Exam, 15.03.2021 (Shift-I)]

Correct Answer: (2) Intelligence satellite
Solution:EMISAT is India's first electronic surveillance satellite.

• It was launched by Indian Space Research Organisation (ISRO) from Sriharikota in coastal Andhra Pradesh on 1 April 2019.

• It has been developed under Defence Research and Development Organisation project Kautilya.

33. Which of the following does a Bandicoot refer to? [RRB NTPC CBT-1 Exam, 01.04.2021 (Shift-I)]

Correct Answer: (4) A drainage-cleaning robot
Solution:Bandicoot is a robotic scavenger, a sewege cleaning robot.

• It is the ultimate robotic solution for manhole cleaning involving robotic innovations.

• It was developed by Kerala based GenRobotics in February 2018.

34. Who has produced the indigenous LCA fighter jets Tejas? [RRB NTPC CBT-1 Exam, 01.04.2021 (Shift-I)]

Correct Answer: (1) Hindustan Aeronautics Limited
Solution:Light Combat Aircraft-Tejas, is being made by Hindustan Aeronautics Limited (HAL) for the Indian Air Force (IAF).

• It has quadruplex digital fly-by-wire Flight Control System (FCS) with associated advanced flight control laws.

• It is powered by a General Electric 85kN F404-GE-IN20 turbofan engine.

35. __________ was the first artificial satellite launched by the Soviet Union in 1957. [RRB NTPC CBT-1 Exam, 05.04.2021 (Shift-I)]

Correct Answer: (4) Sputnik-1
Solution:The Soviet Union successfully launched the Sputnik-1 satellite on Oct. 4, 1957.

• The Sputnik-1 spacecraft was the first artificial satellite successfully placed in orbit around the Earth.

• It was the first in a series of four satellites as part of the Sputnik program of the former Soviet Union.

36. Where is the headquarters of Nuclear Power Corporation of India Limited (NPCIL)? [RRB NTPC CBT-1 Exam, 07.04.2021 (Shift-I)]

Correct Answer: (2) Mumbai
Solution:The Nuclear Power Corporation of India Limited (NPCIL), a premier Public Sector Enterprise under Department of Atomic Energy, based in Mumbai, Maharashtra.

• It was the sole body responsible for constructing and operating India's commercial nuclear power plants till setting up of BHAVINI Vidyut Nigam) in October 2003.

37. Which of the following is used as a fuel in nuclear reactors? [RRB NTPC CBT-1 Exam, 07.04.2021 (Shift-I)]

Correct Answer: (3) Uranium
Solution:Uranium is the most widely used fuel by nuclear power plants for nuclear fission.

• Nuclear power plants uses U-235 as fuel because its atoms are easily split apart.

38. Which state has become India's first state to launch AVGC (Animation, Visual Effects, Gaming and Comics) Centre of Excellence? [RRB Group 'D' CBT Exam, 18.08.2022 (Shift-III)]

Correct Answer: (1) Karnataka
Solution:Karnataka launched India's first AVGC Center of Excellence (CoE) (Animation, Visual Effects, Gaming, and Comics) in Mahadevapura, Bengaluru, in January 2022.

• AVGC COE was launched with pioneering high technology digital media hub under its Innovate Karnataka initiative.

• It is funded by the Department of Electronics Information Technology Biotechnology and Science & Technology.

39. From which state of India did ISRO successfully test fire the Vikas engine, that would power India's first human-carrying rocket Gaganyaan? [RRB Group 'D' CBT Exam, 23.08.2022 (Shift-I)]

Correct Answer: (1) Tamil Nadu
Solution:The Indian Space Research Organisation (ISRO), on 21 January 2022, successfully test-fired the Gaganyan Vikas engine at Mahendragiri, Tamil Nadu.

• The test was conducted to check the robustness of the engine by operating beyond.its nominal operating conditions.

40. Name the app released by the Indian army for an in-house messaging application for the military sector. [RRB Group 'D' CBT Exam, 23.08.2022 (Shift-III)]

Correct Answer: (4) ASIGMA
Solution:The Indian Army on 24 December 2021 launched a contemporary messaging application named, ASIGMA (Army Secure IndiGeneous Messaging Application).

• It is a new generation, state of the art, web-based application developed entirely in-house by team of officers of the Corps of Signals of the Army.

• The application is being deployed on the Army's internal network as a replacement of Army Wide Area Network (AWAN) messaging application.