PSLV, GSLV - GS questions based on daily current affairs

1)   Which of the following statements is/are correct about PSLV C-29?

1. It launched Indonesian satellites in orbit.
2. It is the 50th launch of PSLV.


a. Only 1
b. Only 2
c. Both
d. None
Answer  Explanation 

ANSWER: None

Explanation:
- PSLV C-29 put six Singapore satellites into orbit.
- The Indian Space Research Organisation (ISRO) has completed 50 launches from the Satellite Launching Station in Sriharikota Range
- This is the 32nd flight of PSLV and 11th flight of the launch vehicle in 'core-alone' configuration.
- Satellites : TeLEOS-1 is Singapore's first commercial earth observation satellite designed and developed by ST Electronics. The other five co-passenger satellites are VELOX-C1 (123 kg), VELOX-II (13 kg), Kent Ridge-1 (78 kg), Galassia (3.4 kg) and Athenoxat-1.


2)   Which of the following statements is/ are correct about GSLV-D6?

1. GSLV- D6 carried GSAT-6 which has the largest satellite antenna realized by ISRO.
2. It uses solid rocket propellant only.


a. Only 1
b. Only 2
c. Both
d. None
Answer  Explanation 

ANSWER: Only 1

Explanation:
- It uses indigenously developed Cryogenic Upper Stage (CUS).
- GSLV-D6 is the ninth flight of India's Geosynchronous Satellite Launch Vehicle (GSLV).
- The GSLV is a three-stage rocket. The core of first stage is fired with solid fuel while the four strap-on motors by liquid fuel. The second is the liquid fuel and the third is the cryogenic engine.


3)   Which of the following satellites are launched by PSLV?

1. Chandrayan 1
2. Chandrayan 2
3. GSAT – 6
4. Mangalyaan
5. Astrosat


a. 1,2,4,5
b. 1,4,5
c. 1,3,5
d. All
Answer  Explanation 

ANSWER: 1,4,5

Explanation:
- PSLV is an expendable launch system developed and operated by the Indian Space Research Organisation (ISRO).
- It puts satellite into Sun synchronous orbits.
- Russia’s converted missile launcher, Dnepr, Soyuz and the newer European vehicle Vega are in the same category as the PSLV.
- PlanetiQ, the Colorado-based commercial weather satellites operator, recently signed a deal with Antrix Corporation for launching its first two weather satellites.


4)   Which of the following statements are true about GSLV Mk III?

1. GSLV Mk III is conceived and designed to make ISRO fully self reliant in launching heavier communication satellites of INSAT-4 class, which weights 4500 to 5000 kg.
2. The vehicle is capable of multi-mission launch capability for GTO, LEO, Polar and intermediate circular orbits.
3. It will have 3 stages starting from solid propellant in first to re-startable liquid stage to cryogenic in third.


a. 1,2
b. 2,3
c. 1,3
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
The GSLV-III or Geosynchronous Satellite Launch Vehicle Mark III, is a launch vehicle developed by the Indian Space Research Organization.