Results
Q1. How many satellites does the GPS constellation consist of?
Correct answer is B – 24
Q2. What is the minimum number of satellites required for an accurate three-dimensional position fix?
Correct answer is C – 4
Q3. What coordinate system does GPS use for positioning?
Correct answer is B – World Geodetic System 1984 (WGS-84)
Q4. What is RAIM in GPS?
Correct answer is B – Receiver Autonomous Integrity Monitoring
Q5. What does the Wide Area Augmentation System (WAAS) do?
Correct answer is B – Corrects GPS data based on atmospheric conditions
Q6. What does GAGAN stand for?
Correct answer is B – GPS Aided GEO Augmented Navigation
Q7. GAGAN is a system developed jointly by which organizations?
Correct answer is B – ISRO and AAI
Q8. The main objective of GAGAN is to:
Correct answer is B – Augment GPS signals for increased positional accuracy
Q9. Which statement is correct regarding the accuracy of GAGAN?
Correct answer is A – Reduces error margin to 3.5 meters for aircraft position
Q10. Which phase(s) of flight does GAGAN support for navigation?
Correct answer is B – All phases, including approach and landing
Q11. How does GAGAN enhance airspace usage over India?
Correct answer is B – By enabling more efficient routing and tighter spacing
Q12. What additional capabilities does GAGAN provide ATC and flight crews?
Correct answer is B – High precision vertical and horizontal guidance
Q13. The coverage area of GAGAN includes:
Correct answer is B – Indian region, Bay of Bengal, South East Asia, Middle East up to Africa
Q14. What benefits, besides aviation, are supported by GAGAN?
Correct answer is A – Railway operations and Maritime navigation
Q15. Which of the following is NOT a benefit of GAGAN?
Correct answer is C – Increased runway length at airports
