GATE_AE_2027_MOCK_01_Q09
GATE 2027 Aerospace Engineering All-India Master Mock 01 (Foundation & Standard Core Calibration)
MSQ · 2 Marks
General Aptitude • Verbal Aptitude • Verbal Deduction & Reasoning
Consider the premises: 1. All hypersonic air-breathing cruise vehicles utilize scramjet propulsion. 2. No vehicle utilizing scramjet propulsion can take off from a runway under its own power from zero velocity. Which of the following conclusions is/are logically IRREFUTABLE?
(A) No hypersonic air-breathing cruise vehicle can take off from a runway under its own power from zero velocity.
(B) Any vehicle that takes off under its own power from zero velocity is not a scramjet-powered vehicle.
(C) All vehicles unable to take off from zero velocity are hypersonic cruise vehicles.
(D) Some scramjet vehicles can take off without booster assistance.
Answer Key:
A,B
Step-by-Step Verified Solution
### Solution: A follows directly: Hypersonic vehicle $\to$ Scramjet $\to$ Cannot take off from zero speed. B is the contrapositive of premise 2: Takes off from zero speed $\to$ Not scramjet. C is an invalid converse. D contradicts premise 2. Correct: A, B.