Railway Science (Science and Technology – Satellites)

Total Questions: 59

31. What does GAGAN. a satellite based navigation system, stand for? [RRB NTPC CBT - I (15/02/2021) Evening]

Correct Answer: (c) GPS Aided Geo Augmented Navigation
Solution:

It is an Indian Satellite Based Augmentation System developed by ISRO (Indian Space Research Organisation). It is a step by the Indian Government towards initial Satellite - based Navigation Services in India.
Four Space-Based augmentation systems available in the world - India (GAGAN), the US (WAAS - Wide Area Augmentation System), Europe (EGNOS - European Geostationary Navigation Overlay Service) and Japan (MSAS - Multi-functional Satellite Augmentation System).

32. IRNSS - IG is the : [RRB NTPC CBT - I (16/02/2021) Morning]

Correct Answer: (b) seventh navigation satellite
Solution:

Seventh navigation satellite. IRNSS (Indian Regional Navigation Satellite System) is an independent regional navigation satellite system being developed by India. It is designed to provide accurate position information service to users in India as well as the region extending up to 1500 km from its boundary, which is its primary service area.

33. Which is the heaviest and most powerful communication satellite of India? [RRB NTPC CBT - I (17/02/2021) Morning]

Correct Answer: (b) GSAT-11
Solution:

GSAT-11 - It was successfully launched on December 05, 2018 from Kourou launch base, French Guiana by Ariane-5 VA-246. GSAT-6 is the twenty fifth geostationary communication satellite of India built by ISRO and twelfth in the GSAT series.

34. Kalpana-1 is a ______ satellite. [RRB NTPC CBT - I (17/02/2021) Evening]

Correct Answer: (b) meteorological
Solution:

Kalpana-1: First dedicated meteorological satellite. Launched: Indian Space Research Organisation using Polar Satellite Launch Vehicle (PSLV) on 12 September 2002. The satellite is three-axis stabilized and is powered by solar panels. The METSAT bus was used as the basis for the Chandrayaan lunar orbiter mission of 2008.

35. ISRO’s Communication satellite GSAT-29 carried a high resolution camera named as _____ that is capable of tracking enemy ships in the Indian Ocean. [RRB NTPC CBT - I (17/02/2021) Evening]

Correct Answer: (b) Geo Eye
Solution:

The Indian Space and Research Organisation (ISRO) has successfully launched GSAT-29 (Geostationary Satellite) communication satellite through Geosynchronous Satellite Launch Vehicle Mark III (GSLV Mk III).
Aim: Providing high-speed bandwidth to Village Resource Centres (VRC) in rural areas. “Ku” and “Ka'' operational payloads will provide communication services to Jammu and Kashmir and Northeast India under Digital India programme.

36. Which of the following countries assisted India to launch its first artificial satellite in 1975 ? [RRB NTPC CBT - I (22/02/2021) Evening]

Correct Answer: (a) Soviet Union
Solution:

Soviet Union (now Russia) helped India in launching its first artificial satellite, Aryabhatta into the Earth's orbit, in 1975 by Soviet Kosmos-3M rocket.
The first artificial satellite of the world was Sputnik 1, launched by the Soviet Union (Russia) on October 4, 1957.
Satellites (Country) - KH9-19, UFO-10, DARPASat, TAOS(United States of America), INSAT-1B, Rohini RS-1, GSAT-7 (India), YouthSat, Sputnik-1 (Russia).

37. India’s first Indigenous satellite launch vehicle is: [RRB NTPC CBT - I (27/02/2021) Evening]

Correct Answer: (c) SLV-3
Solution:

SLV-3 (satellite launch vehicle) is The first experimental flight in August 1979 (was a failure).

38. Which Indian satellite gathers data for oceanographic , coastal and atmospheric application? [RRB NTPC CBT - I (02/03/2021) Morning]

Correct Answer: (c) IRS-P4
Solution:

Indian satellite gathers data for oceanographic , coastal and atmospheric application. The INSAT series used to satisfy telecommunications, broadcasting, meteorology, and search and rescue operations.

39. Which Indian communication satellite failed to reach orbit after the rocket’s third stage malfunctioned? [RRB NTPC CBT - I (09/03/2021) Morning]

Correct Answer: (b) GSAT-4
Solution:

GSAT-4 : It was an experimental communication and navigation satellite launched in April 2010 by the Indian Space Research Organisation (ISRO). Other Indian communication satellites : INSAT-1A; INSAT-3B; INSAT-4CR; GSAT-6A; CMS-01.

40. Which country has launched the world’s first quantum satellite to establish hack- proof communication? [RRB NTPC CBT - I (09/03/2021) Evening]

Correct Answer: (d) China
Solution:

Quantum satellite (Micius in 2016) - project Beijing hopes will enable it to build a coveted “hack-proof” communications system with potentially significant military and commercial applications.