The efficiency of jet engine is
Lower at low speed
Higher at high altitudes
Same at all altitudes
Higher at high speed
- For minimum work required to compress and deliver a quantity of air by multistage compression
- Aeroplanes employ following type of compressor
- The process, which causes the air to enter the impeller blades of a centrifugal compressor at ________…
- In a single acting reciprocating air compressor, without clearance, the compression of air may be
- The ratio of specific weight/h.p. of gas turbine and I.C engines may be typically of the order of
- In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working…
- In n₁ and n₂ are the indices of compression for the first and second stage of compression,…
- The material commonly used for air craft gas turbine is
- A compressor at high altitudes will require ________ power.
- Pick up the correct statement
- Inter cooling in compressors
- The volumetric efficiency for reciprocating air compressors is about
- After-cooler is used to
- Efficiency of gas turbine is increased by
- If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of…
- Volumetric efficiency of a compressor without clearance volume
- Gas turbines for power generation are normally used
- In a jet propulsion
- To avoid moisture troubles, the branch connections from compressed air lines should be taken from
- The axial flow compressor is preferred in aircraft gas turbines because of
- An aftercooler is used to
- The inlet pressure is always ________ the discharge pressure.
- Free air is the air at
- Ratio of indicated H.P. and brake H.P. is known as
- Volumetric efficiency of air compressors is of the order of
- Losses in a centrifugal compressor are due to
- If the flow of air through the compressor is perpendicular to its axis, then it is a
- In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine…
- In the axial flow gas turbine, the work ratio is the ratio of
- When the temperature of air leaving the intercooler, in a two stage compression with intercooler, is…