CLAT GurukulSamudraManthan
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Topic 253 · Science, Technology & Space

NavIC clock failures and GNSS jamming and spoofing

10 MCQs · tap an option to check it · All answers

Revise the 12 points first Book 1 RATNA
  1. Core Trigger: Another atomic clock failed aboard an IRNSS satellite, leaving NavIC with only a few fully working satellites.
  2. Recovery Plan: ISRO plans GSLV-F18 with NVS-03 on 30 October 2026 at 11:51 pm IST; as of 29 October it had not flown.
  3. Current Head: V. Narayanan, ISRO Chairman, leads the agency that operates NavIC.
  4. Key Terms: Jamming drowns a signal with noise; spoofing feeds a receiver a false position or time.
  5. Earlier Setback: NVS-02, launched on GSLV-F15, was reported stuck in transfer orbit after a technical fault.
  6. Rival Systems: GPS belongs to the US, GLONASS to Russia, Galileo to the EU, BeiDou to China and NavIC to India.
  7. India Link: NavIC is a regional system covering India and roughly 1,500 km around, serving strategic autonomy.
  8. Venue: GSLV launches take place from the Satish Dhawan Space Centre, Sriharikota, Andhra Pradesh.
  9. Founded: IRNSS-1A launched on 1 July 2013; the system was named NavIC in 2016.
  10. Landmark: India's push for its own system is widely linked to GPS access worries during the 1999 Kargil conflict.
  11. Articles: Article 45 of the ITU Constitution requires all stations to avoid harmful interference with others' radio services.
  12. Definition: Harmful interference endangers a radionavigation service or seriously degrades, obstructs or interrupts a radio service.
Question 1 of 10

Which component failed aboard an IRNSS satellite, weakening NavIC?

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Answer: (A) Atomic clock

Core Trigger: Another atomic clock failed aboard an IRNSS satellite, leaving NavIC with only a few fully working satellites.From Book 1 RATNA, topic 253, point 1

Question 2 of 10

ISRO plans GSLV-F18 to launch which navigation satellite on 30 October 2026?

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Answer: (B) NVS-03

Recovery Plan: ISRO plans GSLV-F18 with NVS-03 on 30 October 2026 at 11:51 pm IST; as of 29 October it had not flown.From Book 1 RATNA, topic 253, point 2

Question 3 of 10

Who is the ISRO Chairman, leading the agency that operates NavIC?

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Answer: (C) V. Narayanan

Current Head: V. Narayanan, ISRO Chairman, leads the agency that operates NavIC.From Book 1 RATNA, topic 253, point 3

Question 4 of 10

Which of the following is/are correct? 1. Jamming drowns a signal with noise. 2. Jamming feeds a receiver a false position or time.

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Answer: (A) Only 1

Key Terms: Jamming drowns a signal with noise; spoofing feeds a receiver a false position or time.From Book 1 RATNA, topic 253, point 4

Question 5 of 10

NVS-02, launched on GSLV-F15, was reported stuck in which orbit?

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Answer: (D) Transfer orbit

Earlier Setback: NVS-02, launched on GSLV-F15, was reported stuck in transfer orbit after a technical fault.From Book 1 RATNA, topic 253, point 5

Question 6 of 10

Which satellite navigation system belongs to the EU?

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Answer: (A) Galileo

Rival Systems: GPS belongs to the US, GLONASS to Russia, Galileo to the EU, BeiDou to China and NavIC to India.From Book 1 RATNA, topic 253, point 6

Question 7 of 10

From which centre do GSLV launches take place?

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Answer: (B) Satish Dhawan Space Centre, Sriharikota

Venue: GSLV launches take place from the Satish Dhawan Space Centre, Sriharikota, Andhra Pradesh.From Book 1 RATNA, topic 253, point 8

Question 8 of 10

The system launched as IRNSS was named NavIC in which year?

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Answer: (B) 2016

Founded: IRNSS-1A launched on 1 July 2013; the system was named NavIC in 2016.From Book 1 RATNA, topic 253, point 9

Question 9 of 10

India's push for its own system is widely linked to GPS access worries during which conflict?

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Answer: (A) Kargil conflict, 1999

Landmark: India's push for its own system is widely linked to GPS access worries during the 1999 Kargil conflict.From Book 1 RATNA, topic 253, point 10

Question 10 of 10

Which of the following is/are correct? 1. Article 45 of the ITU Constitution requires stations to avoid harmful interference. 2. Harmful interference can endanger a radionavigation service.

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Answer: (C) Both 1 and 2

Articles: Article 45 of the ITU Constitution requires all stations to avoid harmful interference with others' radio services. Definition: Harmful interference endangers a radionavigation service or seriously degrades, obstructs or interrupts a radio service.From Book 1 RATNA, topic 253, point 11, point 12

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