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space_telecom MCQ — 4 Practice Questions with Answers

Practice 4 space_telecom multiple-choice questions with detailed answers and explanations. Ideal for RAS/RPSC exam preparation.

4 Questions science_technology

Practice Questions

Q1. With reference to the ground test of the improved SSLV third stage conducted by ISRO on December 30, 2025, which of the following statements is correct?

A The improved SS3 features a carbon-epoxy composite motor case that improves SSLV payload capacity by about 90 kg Correct
B The test duration was 60 seconds
C SSLV is a four-stage launch vehicle
D The test was conducted at Thumba Equatorial Rocket Launching Station

Explanation

The improved SS3 motor case is made of carbon-epoxy composite, which reduces stage mass and improves SSLV payload performance by about 90 kg. The test duration was 108 seconds, not 60 seconds. SSLV is a three-stage all-solid launch vehicle, not four-stage. The test was conducted at Sriharikota (SDSC-SHAR), not Thumba.

Q2. With reference to the National Frequency Allocation Plan 2025 (NFAP-2025) that came into effect on December 30, 2025, consider the following statements:\n1. NFAP-2025 was released by the Department of Telecommunications under the Ministry of Communications.\n2. The plan covers the allocation of radio-frequency spectrum in the range 8.3 kHz to 3000 GHz.\n3. The 6425-7125 MHz band has been formally identified for International Mobile Telecommunications (IMT).\nWhich of the above statements is/are correct?

A Only 1 and 2
B Only 2 and 3
C 1, 2 and 3 Correct
D Only 1 and 3

Explanation

All three statements are correct. NFAP-2025 was released by the Department of Telecommunications under the Ministry of Communications and came into effect on December 30, 2025. It covers allocation of radio-frequency spectrum across the 8.3 kHz to 3000 GHz range. The 6425-7125 MHz band has been formally identified for IMT, enhancing mid-band spectrum for 5G, 5G Advanced and future 6G networks.

Q3. At which facility was the static firing test of the improved SSLV SS3 motor conducted on December 30, 2025?

A Vikram Sarabhai Space Centre, Thumba
B Solid Motor Static Test Facility, Satish Dhawan Space Centre (SDSC-SHAR), Sriharikota Correct
C Liquid Propulsion Systems Centre, Mahendragiri
D ISRO Propulsion Complex, Bengaluru

Explanation

ISRO conducted the ground test of the improved SSLV third stage (SS3) at the Solid Motor Static Test Facility of the Satish Dhawan Space Centre (SDSC-SHAR), Sriharikota, on December 30, 2025. This facility is used for static firing tests of solid-propellant rocket motors.

Q4. Which of the following frequency bands has been allocated under NFAP-2025 for satellite-based services including both Geo-Stationary Orbit (GSO) and non-GSO satellite constellations?

A L and S bands only
B C band only
C X band only
D Ka, Q and V bands Correct

Explanation

Under NFAP-2025, the Ka, Q and V bands have been allocated for satellite-based services, supporting both Geo-Stationary Orbit (GSO) and non-GSO satellite constellations including low-earth-orbit and medium-earth-orbit systems. This enables next-generation satellite broadband deployments in India.

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There are 4 space_telecom practice MCQs available on Aspirant Academy, with detailed answers and explanations for each question.
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Yes, every space_telecom question comes with the correct answer and a detailed explanation to help you understand the underlying concept.
How is space_telecom relevant to the RAS/RPSC exam?
space_telecom falls under the science_technology section of the RAS/RPSC syllabus. It is a frequently tested area and regular practice with these MCQs will strengthen your preparation.
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