ISRO Mechanical & Aerospace 2020 - Question 19

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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 exit of the engine diffuser is 36 °C? (Assuming air stagnation at diffuser outlet and Cp of air as 1.0 kJ/kg.K)

  • A. 12 m/s
  • B. 3 m/s
  • C. 6 m/s
  • D. 18 m/s

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