Q. Consider the following statements regarding air-breathing jet engines.
Which of the statements given above is/are correct?
Q. Consider the following statements regarding air-breathing jet engines.
Which of the statements given above is/are correct?
The correct option is A 1 and 2 only
Explanation:
Statement 1 is correct: A scramjet (supersonic-combustion ramjet) is a ramjet engine in which the airflow through the engine remains supersonic, or greater than the speed of sound. Scramjet-powered vehicles are envisioned to operate at speeds up to at least Mach 15.A scramjet engine is an improvement over the ramjet engine as it efficiently operates at hypersonic speeds and allows supersonic combustion. Thus it is known as Supersonic Combustion Ramjet or Scramjet.
Statement 2 is correct: The Scramjet engine designed by ISRO uses Hydrogen as fuel and oxygen, from the atmospheric air as the oxidizer.
Statement 3 is incorrect: The Vikas is a family of liquid-fuelled rocket engines conceptualized and designed by the Liquid Propulsion Systems Centre in the 1970s. The design was based on the licensed version of the Viking engine with the chemical pressurisation system. It is used in the PSLV and the GSLV series of launch vehicles. Vikas engine is used to power the second stage PSLV, boosters and second stage of GSLV Mark I and II and the first stage of GSLV Mark III.
Explanation:
Statement 1 is correct: A scramjet (supersonic-combustion ramjet) is a ramjet engine in which the airflow through the engine remains supersonic, or greater than the speed of sound. Scramjet-powered vehicles are envisioned to operate at speeds up to at least Mach 15.A scramjet engine is an improvement over the ramjet engine as it efficiently operates at hypersonic speeds and allows supersonic combustion. Thus it is known as Supersonic Combustion Ramjet or Scramjet.
Statement 2 is correct: The Scramjet engine designed by ISRO uses Hydrogen as fuel and oxygen, from the atmospheric air as the oxidizer.
Statement 3 is incorrect: The Vikas is a family of liquid-fuelled rocket engines conceptualized and designed by the Liquid Propulsion Systems Centre in the 1970s. The design was based on the licensed version of the Viking engine with the chemical pressurisation system. It is used in the PSLV and the GSLV series of launch vehicles. Vikas engine is used to power the second stage PSLV, boosters and second stage of GSLV Mark I and II and the first stage of GSLV Mark III.
