ISRO Scientist or Engineer Mechanical 2020 Question 19

Question 19

An aircraft is in its take off roll at sea level with ambient temperature of 18°C. What is the approximate speed of the aircraft if the temperature measured by a probe at the exist of the engine diffuser is $$36^\circ$$ C? (Assuming air Stagnation at diffuser outlet and $$C_{p}$$ of air as 1.0 $$\frac{kJ}{Kg.K}$$)



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