Daily Quiz: UPSC Prelims Marathon – June 21, 2018

Indian Space Research Organisation (ISRO) is headquartered in Bengaluru. The Inter–University Centre for Astronomy and Astrophysics (IUCAA) is located in Pune, India.

Inter–University Accelaerator Centre (IUAC)  is  an autonomous research facility of University Grants Commission which is based in New Delhi. Vikram Sarabhai Space Centre (VSSC) is a major space research centre of the Indian Space Research Organisation, focusing on rocket and space vehicles, is located in Thiruvananthapuram, Kerala.

A ‘Gravity tractor’ (GT) is a spacecraft with a mechanism that can deflect another object in space without physically contacting it. It will use only its gravitational field to transmit the required impulse. It can effect a potentially hazardous asteroid that might hit earth.

Akash is a medium–range mobile surface–to– air missile. Nag is an antitank missile by DRDO. Pinaka is a multiple rocket launcher produced for Indian Army by DRDO while Trishul is a missile system of a short range surface to–air missile as a part of the Integrated Guided Missile Development Program.

An  orbiting  satellite  is  a   projectile,   that the only force  acting  upon  an  oribiting  satellite is the force of gravity. The force of gravity also accelerates it towards the earth. But the earth’s round shape prevents it to fall on ground and if   the satellite is in more than 8000  m/s  speed  it also contributes to the maintenance of motion in a particular orbit or elliptical path.

Multiple Independent Re–entry Vehicle  (MIRV)  is a ballistic missile payload or “bus” of   a ballistic missile. It is capable of being aimed to hit one of a group of targets. A unitary warhead    is a single warhead on a single missile Multiple re-entry  vehicle   (MRV)   is   an   intermediate case in which the MRV missile carries several reentry vehicles, which can be dispersed but not individually aimed.

Both the statements regarding Indian Polar Research stations are incorrect.

India’s first expedition to Antarctica was in 1981, she expanded it by undertaking its first Arctic expedition in August 2007 by setting up ‘Himadri’ at Nye–Alesund in Norway in 2008 to mark the International Polar Year (IPY).

The first Antarctic research station was Gangotri (1983) and second was Maitri (1989). ‘Bharti’ or ‘Bharthi’ is the third Antarctic station at Larsemann in East Antarctica.

A computer keyboard, a  typewriter–style device having a particular arrangement of buttons or keys, is a main input device. It inputs text, numbers and sends commands to the computer.