Consider the following statements regarding the High Frequency Active Auroral Research Programme (HAARP):
1. It is an ionospheric research Program.
2. The purpose of HAARP is to investigate the potential for developing ionospheric enhancement technology for radio communications and surveillance.
3. The most prominent instrument at the HAARP station is the Ionospheric Research Instrument (IRI) a high-power radio frequency transmitter facility operating in the High Frequency (HF) band.
Q. Which of the statements given above are correct?
Orbital decay, a process of prolonged reduction in the attitude of a Satellite’s Orbit is caused by which of the following reasons?
1. Atmospheric drag
2. Tides
3. Gravitational pull Correct
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How do you distinguish between Passive Optical Network (PON) and Gigabit Passive Optical Network (GPON)?
1. PON is a network architecture that brings fiber cabling and signals to the home using a point-to-multipoint scheme that enables a single optical fibre to serve multiple premises.
2. PON standard differs from non-PON standards in that it achieves higher bandwidth and higher efficiency using larger, variablelength packets.
3. GPON offers efficient packaging of user traffic, with frame segmentation allowing higher Quality Of Service (QOS) for delaysensitive voice and video communications traffic.
Q. Which of the statements given above are correct?
Recently, scientists have developed a device to near completion like an ipad that could be folded or rolled up repeatedly. What has been used in its development?
Which of the following statements is correct regarding the SKA telescope?
1. At present, it has 36 antennas with diameter of 12 meters each and it is placed at the remote Murchison Radio Astronomy Observatory
2. The radio waves generated from this telescope can provide details of the cosmos far away and the gases that resulted in the formation of any particular star.
Q. Select the correct answer using the codes given below:
Consider the following statements:
1. Megha–Tropiques is an advanced weather and climate research satellite.
2. Megha–Tropiques is a joint atmospheric satellite mission of India (ISRO) and Russia (Roscosmos).
3. Megha–Tropiques has been launched by ISRO from Sriharikota.
Q. Which of the statements given above is/are not true?
Consider the following statements:
1. Nirbhaya is a subsonic cruise missile being developed by DRDO.
2. The air version of Brahmos has been successfully test-fired recently.
3. Brahmos-II will be hypersonic cruise missile with target range of more than 300 km.
Q. Which of the above statements is/are not true?
RAM (Random Access Memory) is the primary memory used in a computer. RAMs are divided into two categories as static RAM (SRAM) and Dynamic RAM (DRAM). What is the difference between static and Dynamic RAM?
1. DRAMs are less expensive and slower than SRAMs.
2. DRAM requires to be refreshed periodically as opposed to the SRAM.
3. DRAM has higher bit density and lower power consumption.
Q. Which of the above statements are correct?
Indian Space Research Organisation (ISRO) is creating a GEO Imaging Satellite (GISAT) which it plans to launch. Consider the following statements about it:
1. The satellite will carry a GEO Imager with multi-spectral, multi-resolution imaging instruments.
2. Gisat will provide near real time pictures of large areas of the country, under cloud free conditions, at frequent intervals.
Consider the following statements about Dhanush missile and select the correct answer:
1. Dhanush missile is an indigenously developed naval version of the Prithvi short range ballistic missile.
2. It is a single stage missile and was developed by the DRDO and it uses liquid propellant.
3. It has a strike range of up to 350 km and can carry 500 kg of conventional warheads only.
Consider the following statements about Dornier 228, which India has recently handed over to Seychelles and select the correct answers:
1. The Dornier 228 is manufactured by the DRDO.
2. It is a highly reliable, multi-purpose, fuel efficient rugged, lightweight twin turbo prop aircraft with a retractable tricycle landing gear.
3. It is a frontline surveillance platform for applications like maritime reconnaissance, intelligence, warfare, search and rescue, pollution control and transport.
A computer cookie is a small text file placed on computers by a website. Which among the following can be the use of cookie?
1. Cookies can carry viruses.
2. Cookies can be used to maintain data.
3. Cookies can be used to track internet user’s web browsing.
4. Cookies can install malware on the host computer.
Consider the following statements about Ethernet and select the correct answers:
1. Ethernet is a family of computer networking technologies for wide area networks (WANs)
2. Data rates over Ethernet can be upto 100 gigabits per second.
3. Ethernet has a good degree of compatibility.
ISRO space vision 2025 includes:
1. Satellite based communication and navigation systems mainly for rural connectivity.
2. Space science mission for better understanding of solar system and universe.
3. Reusable Launch Vehicles Technology demonstrator mission leading to Two-stageTo-orbit-(TSTO).
4. Planetary explorations to Mars and Venus. Which of the above statements is/are correct?
Consider the following statements:
1. A Ramjet is a form of an air-breathing using the engine’s forward motion to compress incoming air, without a rotary compressor.
2. Ramjets cannot move an aircraft from standstill.
3. A subsonic combustion Ramjet or Scramjet is a variant of a Ramjet air-breathing.
Consider the following statements:
1. European Space Agency (ESA) has joined the NASA’s Euclid Mission to be launched in 2020.
2. Euclid Mission is a space telescope designed to investigate the cosmological mysteries of dark matter and dark energy.
Q. Which of the statements given above is/are correct?
Recently, India successfully test-fired ‘Nirbhay’. Consider the following statements in the above context:
1. Nirbhay is the country’s second supersonic cruise missile, the first being Brahmos.
2. It is a 3-stage surface-to-air missile and is inspired by the technology of ‘Lakshyaaircraft’.
3. It is also called ‘treetop missile’ as its shape is similar to the stem of a tree.
4. The missile has a good loitering capability.
5. The missile is designed by the Aeronautical Development Establishment (ADE) of DRDO.
Q. Which of the statements given above is/are correct?
Which of the following is/ are correct about the dwarf planets?
1. A dwarf planet is a planetary-mass object that is neither a planet nor a satellite.
2. A dwarf planet is a celestial body in direct orbit of the Sun that is massive enough for its shape to be controlled by gravitation, but that unlike a planet has not cleared its orbital region of other objects.
3. Dwarf planets are any astronomical objects orbiting the Sun that did not show the disk of a planet and were not observed to have the characteristics of an active comet.
4. Dwarf planets are formed out of cosmic dust grains that collide and stick to form larger and larger bodies.
Which of the following is equal to 1 Mars year?
1. 23 Earth months
2. 686.65 days
3. 1.88 Earth years
An Anglo-German team of astronomers has discovered a new planet orbiting a nearby Sun at just the right distance for an Earth-like climate that could support life. The name of new planet is
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154 videos|396 docs|723 tests
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