Daily Quiz 11 January 2025
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Question 1 of 4
1. Question
1 pointsWith reference to the SpaDeX mission by the Indian Space Research Organisation (ISRO), consider the following statements:
1. It involves two satellites dubbed as “Chaser” and “Target”, to demonstrate in-space docking and undocking technology.
2. It aims to transfer electric power between the docked spacecraft, a technology crucial for future space applications like in-space robotics.
3. If successful, India will become the fifth country in the world capable of performing space docking operations.
4. The SpaDeX mission will launch aboard the GSLV Mk III rocket.
Which of the statements given above is/are correct?Correct
Answer: A
Explanation:
● Statement 1 is correct: SpaDeX is a new mission to be flown by the Indian Space Research Organisation (ISRO). The two satellites, dubbed ‘Chaser’ and ‘Target’, involved in the SpaDeX mission. During the mission, two satellites will be launched into orbit around the earth, where they will demonstrate the technologies to dock and undock while in motion.
● Statement 2 is correct: The docking manoeuvre will be SpaDeX’s primary objective. Once it has been accomplished, the two satellites will proceed to the secondary objectives: “the transfer of electric power between the docked spacecraft, which is essential for future applications such as in-space robotics; composite spacecraft control; and payload operations after undocking.
● Statement 3 is not correct: If the SpaDeX test is successful, India will become the fourth country in the world to have a space programme capable of docking in space.
● Statement 4 is not correct: The satellites for the SpaDeX mission will be launched onboard the PSLV C60 mission.Incorrect
Answer: A
Explanation:
● Statement 1 is correct: SpaDeX is a new mission to be flown by the Indian Space Research Organisation (ISRO). The two satellites, dubbed ‘Chaser’ and ‘Target’, involved in the SpaDeX mission. During the mission, two satellites will be launched into orbit around the earth, where they will demonstrate the technologies to dock and undock while in motion.
● Statement 2 is correct: The docking manoeuvre will be SpaDeX’s primary objective. Once it has been accomplished, the two satellites will proceed to the secondary objectives: “the transfer of electric power between the docked spacecraft, which is essential for future applications such as in-space robotics; composite spacecraft control; and payload operations after undocking.
● Statement 3 is not correct: If the SpaDeX test is successful, India will become the fourth country in the world to have a space programme capable of docking in space.
● Statement 4 is not correct: The satellites for the SpaDeX mission will be launched onboard the PSLV C60 mission. -
Question 2 of 4
2. Question
1 pointsRecently seen in the news, India Asia Xpress (IAX) and India Europe Xpress (IEX) are:
Correct
Answer: A
Explanation:
The India-Europe-Xpress (IEX) connects Mumbai to Europe and interconnects with the India-Asia-Xpress (IAX) in Mumbai to reach Singapore. The India-Asia-Xpress (IAX) is a submarine cable connecting Mumbai and Chennai to Singapore and interconnects with the India-Europe-Xpress (IEX) in Mumbai. These are undersea cables for digital connectivity. Both cable systems, cumulatively over 15,000 kilometres in length, are owned by Reliance Jio, with a strategic investment from China Mobile.
Incorrect
Answer: A
Explanation:
The India-Europe-Xpress (IEX) connects Mumbai to Europe and interconnects with the India-Asia-Xpress (IAX) in Mumbai to reach Singapore. The India-Asia-Xpress (IAX) is a submarine cable connecting Mumbai and Chennai to Singapore and interconnects with the India-Europe-Xpress (IEX) in Mumbai. These are undersea cables for digital connectivity. Both cable systems, cumulatively over 15,000 kilometres in length, are owned by Reliance Jio, with a strategic investment from China Mobile.
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Question 3 of 4
3. Question
1 pointsWith reference to the working principle of speed guns, consider the following statements:
- Speed guns use the Doppler effect to measure the speed of an object by analyzing the change in frequency of reflected electromagnetic waves.
- Speed guns use sound waves for measurement, similar to the principle used in the Doppler effect for sound.
- LIDAR speed guns are a more accurate alternative to radar-based speed guns, as they use laser light, which has lower divergence than radio waves.
How many of the above statements are correct?
Correct
Answer: B
Explanation:
- Statement 1 is correct: A speed gun is a device to measure the speed of a moving object without having to be in contact with the object. To achieve this, the device bounces electromagnetic radiation of a specific frequency off the object, capturing the reflection and using the Doppler effect to infer the object’s speed. Speed guns are electronic, and use complex circuitry to emit the radiation used to make the measurement.
- Statement 2 is not correct: Speed guns use electromagnetic (radio) waves, not sound waves, to measure speed.
Statement 3 is correct: LIDAR speed guns have been replacing radar counterparts. The name is short for ‘light detection and ranging’. LIDAR uses laser light instead of radio waves; the gun’s operation is otherwise similar. Laser light has very low divergence and thus offers better targeting
Incorrect
Answer: B
Explanation:
- Statement 1 is correct: A speed gun is a device to measure the speed of a moving object without having to be in contact with the object. To achieve this, the device bounces electromagnetic radiation of a specific frequency off the object, capturing the reflection and using the Doppler effect to infer the object’s speed. Speed guns are electronic, and use complex circuitry to emit the radiation used to make the measurement.
- Statement 2 is not correct: Speed guns use electromagnetic (radio) waves, not sound waves, to measure speed.
Statement 3 is correct: LIDAR speed guns have been replacing radar counterparts. The name is short for ‘light detection and ranging’. LIDAR uses laser light instead of radio waves; the gun’s operation is otherwise similar. Laser light has very low divergence and thus offers better targeting
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Question 4 of 4
4. Question
1 pointsWith reference to the HLVM3-G1 mission, consider the following statements:
- It covers only the aspects related to the lift-off, injection into orbit and ‘circularisation’ of orbit of the manned mission of ISRO.
- Its crew module is connected to the crew escape system that is located at the very top.
- Its aerodynamic configuration is the same as that of the LVM3 (formerly known as Geosynchronous Satellite Launch Vehicle Mk-III).
How many of the above statements are correct?
Correct
Answer: A
Explanation:
- Statement 1 is not correct: The HLVM3-G1 mission is designed to validate technologies and abilities needed for a manned mission. “It is designed as an end-to-end mission covering lift-off, injection into orbit, ‘circularisation’ of orbit, re-entry and splashdown.
- Statement 2 is correct and statement 3 is not correct: Compared to the conventional LVM3 (formerly known as Geosynchronous Satellite Launch Vehicle Mk-III), the HLVM3 has distinct features.
- The aerodynamic configuration is different. Normally, you have a bulbous payload fairing atop the vehicle protecting the satellite. Here, the crew escape system at the very top. Inside it will be the orbital module. The crew module is connected to the crew escape system. The overall height of the vehicle has increased by around 10 metres to 53 metres.
Incorrect
Answer: A
Explanation:
- Statement 1 is not correct: The HLVM3-G1 mission is designed to validate technologies and abilities needed for a manned mission. “It is designed as an end-to-end mission covering lift-off, injection into orbit, ‘circularisation’ of orbit, re-entry and splashdown.
- Statement 2 is correct and statement 3 is not correct: Compared to the conventional LVM3 (formerly known as Geosynchronous Satellite Launch Vehicle Mk-III), the HLVM3 has distinct features.
- The aerodynamic configuration is different. Normally, you have a bulbous payload fairing atop the vehicle protecting the satellite. Here, the crew escape system at the very top. Inside it will be the orbital module. The crew module is connected to the crew escape system. The overall height of the vehicle has increased by around 10 metres to 53 metres.
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