General Science...

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  

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. ​