Only rocket engines can be propelled to space because
They can generate very high thrust
They have high propulsion efficiency
These engines can work on several fuels
They are not air breathing engines
- The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity)
- As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure…
- In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs…
- Volumetric efficiency of air compressors is of the order of
- It is not possible to use closed gas turbine cycle in aeronautical engines because
- The work ratio of simple gas turbine cycle depends on
- The air is delivered ________ in one revolution in case of a three lobbed rotor.
- For minimum work in multistage compression, assuming same index of compression in all stages
- Which of the following plants is smallest and lightest for generating a given amount of power?
- For perfect intercooling in a three stage compressor
- Axial flow compressor has the following advantage over centrifugal compressor
- An ideal air compressor cycle with clearance on PV diagram can be represented by following processes
- In a reciprocating air compressor, the compression work per kg of air
- Pick up the false statement
- The output of a gas turbine is 300 KW and its efficiency is 20 percent, the heat supplied is
- A rocket engine for the combustion of its fuel
- The volumetric efficiency of a compressor
- Pick up wrong statement. Surging phenomenon in centrifugal compressor depends on
- In multistage compressor, the isothermal compression is achieved by
- If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of…
- The ratio of the indicated power to the shaft power or brake power of the motor or engine required to…
- If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air…
- Open cycle gas turbine works on
- In the aircraft propellers
- Air-fuel ratio in a jet engine will be of the order of
- The maximum temperature in a gas turbine is
- If the clearance ratio for a reciprocating air compressor is 'K', then its volumetric efficiency is…
- For minimum work required to compress and deliver a quantity of air by multistage compression
- The fuel consumption in gas turbines is accounted for by
- Cylinder clearance in a compressor should be