ISRO SDX01

Here are 11 multiple-choice questions (MCQs) about the ISRO SDX01 (Space Docking Experiment) mission with detailed explanations:

1. What is the primary objective of the ISRO SDX01 mission?

• A) To study Earth's atmosphere
• B) To demonstrate in-space docking technology
• C) To monitor climate change
• D) To observe distant galaxies

Answer: B) To demonstrate in-space docking technology Explanation: The SDX01 mission, also known as SpaDeX, aims to demonstrate the technology for rendezvous, docking, and undocking of two small spacecraft in a low-Earth orbit, marking India's advancement in space technology.

2. Which satellite is referred to as the 'Chaser' in the SDX01 mission?

• A) SDX01
• B) SDX02
• C) SDX03
• D) SDX04

Answer: A) SDX01 Explanation: In the SpaDeX mission, SDX01 is designated as the 'Chaser' satellite, while SDX02 is the 'Target.' The Chaser is responsible for approaching and docking with the Target satellite.

3. What was the launch vehicle used for the SDX01 mission?

• A) GSLV Mk III
• B) PSLV-C60
• C) SSLV
• D) LVM3

Answer: B) PSLV-C60 Explanation: The Polar Satellite Launch Vehicle (PSLV) C60 was used to launch the SpaDeX satellites into orbit. This was part of ISRO's effort to leverage their reliable workhorse rocket for this experimental mission.

4. At what altitude were the SDX01 and SDX02 satellites placed?

• A) 200 km
• B) 470 km
• C) 800 km
• D) 1000 km

Answer: B) 470 km Explanation: Both satellites were placed into a circular orbit at an altitude of approximately 470 km to execute the docking experiments.

5. What was one of the key experiments conducted after the docking of SDX01 and SDX02?

• A) Transfer of electrical power
• B) High-speed internet connectivity
• C) Lunar mapping
• D) Weather forecasting

Answer: A) Transfer of electrical power Explanation: Post-docking, one of the significant experiments was to demonstrate the transfer of electrical power between the two spacecraft, which is crucial for future space operations.

6. What kind of camera is mounted on SDX01 for surveillance?

• A) Infrared Camera
• B) Ultraviolet Camera
• C) High-Resolution Camera (HRC)
• D) Thermal Imaging Camera

Answer: C) High-Resolution Camera (HRC) Explanation: SDX01 is equipped with a High-Resolution Camera for Earth observation and surveillance, providing detailed imagery from space.

7. Which of these is NOT a payload on SDX02?

• A) Miniature Multi-Spectral Payload (MMX)
• B) Radiation Monitor (RadMon)
• C) High-Resolution Camera (HRC)
• D) None of the above

Answer: C) High-Resolution Camera (HRC) Explanation: SDX02 carries the Miniature Multi-Spectral Payload and a Radiation Monitor but not the High-Resolution Camera, which is on SDX01.

8. How long is the expected mission life of SDX01 and SDX02 after successful docking?

• A) 1 month
• B) 6 months
• C) 1 year
• D) Up to 2 years

Answer: D) Up to 2 years Explanation: After the docking experiments, both satellites are expected to operate for their individual missions for up to two years.

9. Which statement about the SDX01 mission is false?

• A) It uses indigenous technology.
• B) It was ISRO's first attempt at space docking.
• C) It involves only one satellite.
• D) It was launched in late 2024.

Answer: C) It involves only one satellite. Explanation: The SpaDeX mission involves two satellites, SDX01 and SDX02, making the statement that it involves only one satellite false.

10. What was the initial target distance for docking between SDX01 and SDX02?

• A) 50 meters
• B) 20 kilometers
• C) 15 meters
• D) 3 meters

Answer: D) 3 meters Explanation: The satellites were maneuvered to come as close as 3 meters to each other as part of the docking procedure before moving back to a safe distance for further analysis.

11. Which countries had previously mastered space docking technology before India with SDX01?

• A) USA, China, Russia
• B) USA, Japan, France
• C) Russia, UK, Germany
• D) China, Brazil, South Korea

Answer: A) USA, China, Russia Explanation: Before the successful SpaDeX mission, only the United States, China, and Russia had demonstrated space docking capabilities, making India the fourth nation to join this elite group with the SDX01 mission.

These questions aim to test knowledge on various technical and operational aspects of the SDX01 mission, providing insight into ISRO's significant achievement in space technology.