Daily GS Foundation MCQs - SthaapnaIAS Previous Year QuestionsScience and technology Previous Year QuestionStaapana - April 2019Sthaapana – April 2019 – Week 4

PYQ Science & Technology | Lecture 01 | Space Technology and Satellite Missions_Part 1

Q.1) Assertion (A) : Artificial satellites are always launched from the earth in the eastward direction.

Reason (R) : The earth rotates from west to east and so the satellite attains the escape velocity. 

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is NOT a correct explanation of A

(c) A is true but R is false

(d) A is false but R is true

Q.2) Consider the following statements:

  1. A geo-stationary satellite is at an approximate height of 10,000 km.
  2. FM transmission of music is of very good quality because the atmospheric or man made noises which are generally frequency variations can do little harm.

Which of the statements give above is/are correct?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

Q.3) Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when: 

1. The orbit is geosynchronous.
2. The orbit is circular,
3. The orbit lies in the plane of the Earth’s equator.
4. The orbit is at an altitude of 22,236 km.

Select the correct answer using the codes given below:

(a)1, 2 and 3 only

(b)1, 3 and 4 only

(c)2 and 4 only

(d)1, 2,3 and 4

Q.4) Consider the following statements in respect of a jet engine and a rocket: 

  1. A jet engine uses the surrounding air for its oxygen supply and so is unsuitable for motion in space.
  2. A rocket carries its own supply of oxygen in the gas form, and fuel.

Which of the statements given above is/are correct?

(a)1 only

(b)2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

Q.5) Cryogenic engines find applications in : 

(a) sub-marine propulsion

(b) frost-free refrigerators

(c) rocket technology

(d) research in superconductivity

Q.6) ISRO successfully conducted a rocket test using cryogenic engines in the year 2007. Where is the test base used for the purpose, located? 

(a) Balasore

(b) Thiruvananthapuram

(c) Mahendragiri

(d) Karwar

Q.7) With reference to India’s satellite launch  vehicles, consider the following statements: 

  1. PSLVs launch the satellites useful for Earth resources monitoring whereas GSLVs are designed mainly to launch communication satellites.
  2. Satellites launched by PSLV appear to remain permanently fixed in the same position in the sky, as viewed from a particular location on Earth.
  3. GSLV Mk III is a four-staged launch l vehicle with the first and third stages l using solid rocket motors; and the second and fourth stages using liquid rocket engines.

Which of the statements given above is/are correct.?

(a) 1 only

(b) 2 and 3

(c) 1 and 2

(d) 3 only

Q.8) Consider the following statements: 

A person in a spaceship located half way between the earth and the sun will notice that the:

  1. sky is jet black.
  2. stars do not twinkle.
  3. temperature outside the spaceship is much higher than that on the surface of the earth.

(a)3 alone is correct

(b)1 and 2 are correct

(c) 1 and 3 are correct

(d) 1, 2 and 3 are correct

Do it yourself

Q.9) Electrically charged particles from space travelling at speeds of several hundred km/sec can severely harm living beings if they reach the surface of the Earth. What prevents them from reaching the surface of the Earth? 

(a) The Earth’s magnetic field diverts them towards its poles

(b) Ozone layer around the Earth reflects them back to outer space

(c) Moisture in the upper layers of atmosphere prevents them from reaching the surface of the Earth

(d) None of the statements (a), (b) and (c) given above is correct

Do it yourself

Q.10) Low temperatures (cryogenics) find application in : 

(a) space travel, surgery and magnetic levitation

(b) surgery, magnetic levitation and telemetry

(c) space travel, surgery and telemetry

(d) space travel, magnetic levitation and telemetry

Do it yourself

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