Q95.
With reference to India's satellite launch vehicles, consider the following statements: 1. PSLVs launch the satellite 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 in Earth. 3. GSLV Mk III is a four-staged launch vehicle with the first and third stages using solid rocket motors; and the second and fourth stages using liquid rocket engines. Which of the statements given above is/are correct?
Answer
A
Explanation
Statement 1 is correct: PSLV is designed mainly to deliver earth-observation/remote-sensing satellites. GSLV is designed mainly to deliver communication satellites to Geosynchronous Transfer Orbit. Statement 2 is not correct: PSLV launches to polar/sun-synchronous orbits (not geostationary), so satellites do NOT appear fixed in sky. Statement 3 is not correct: GSLV Mk III is a THREE-stage vehicle (not four-staged) with two solid strap-ons, a core liquid booster and a cryogenic upper stage.