Universe (Planets / Space/Satellites)(General Knowledge > General Science ) Questions and answers for exam Preparation

General Knowledge > General Science

UNIVERSE (PLANETS / SPACE/SATELLITES) MCQs

Earth And Space Science, Space And Satellite

Total Questions : 171 | Page 6 of 18 pages

Question 51. Consider the following Statements:

Port Blair Magnetic Observatory (PBMO) was inaugurated at Shoal Bay No. 8 in Port Blair,Andaman and Nicobar Islands on 30 March 2015.
The observatory has been set up by the Indian Institute of Geomagnetism (IIG) under the Multi-Parametric Geophysical Observatories (MPGO).
The IIG is located in Chennai.

Which of the statements given above is/are correct?

2 and 3 only
1 and 3 only
1 and 2 only
All of the above

Discuss Question

Answer: Option C. -> 1 and 2 only
Answer: (c)The IIG is located in Mumbai.

Question 52. On which date did Chandrayaan enter the lunar orbit?

3 November
6 November
None of the above
8 November

Discuss Question

Answer: Option D. -> 8 November
Answer: (d)

Question 53. The Phobos Grunt was:

Mars probe mission of Russia.

Carrying Yinghua-1, first Mars probe of China.

1 and 2 both
2 only
1 only
None

Discuss Question

Answer: Option A. -> 1 and 2 both
Answer: (a)
Orbital tracking reports suggest Russia’s failed Mars probe, Phobos-Grunt, fell back to Earth on Sunday, to be destroyed over the Pacific. Yinghuo-1 was a Chinese Mars exploration space probe, intended to be the first Chinese spacecraft to explore Mars.
It was launched from Baikonur Cosmodrome, Kazakhstan, on 8 November 2011, along with the Russian Fobos-Grunt sample return spacecraft, which was intended to visit Mars’ moon Phobos.

Question 54. An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth

provides the necessary speed for its steady motion
is neutralized by the attraction of the moon
does not exist at such distance
provides the necessary acceleration for its motion

Discuss Question

Answer: Option D. -> provides the necessary acceleration for its motion
Answer: (d)
An artificial satellite moving around the Earth in a circular orbit possesses an acceleration which is “constant” in magnitude but “changing in direction”.
An artificial satellite revolves round the earth under centripetal acceleration. By the launch rocket, immediately before the satellite is established in the predetermined orbit, the speed given to it is 30, 000 km/hr.
The speed must be great enough so gravity doesn’t bring the satellite back to Earth, but not so great that the satellite escapes gravity out into space.
This means that the speed, which is provided by the rocket is the source of the centrifugal force, and the attraction of the earth holds it from moving away from this centrifugal force.

Question 55. Indian Satellite series which is being used for telecommunication system is