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Hot combustion gases enter the nozzle of a turbojet engine at 260 kPa, 747°C, and 80 m/s, and they exit at a pressure of 85 kPa. Assuming an isentropic efficiency of 92 percent and treating the combustion gases as air, determine
(a) The exit velocity and
(b) The exit temperature.
calculate the minimum possible magnitude u of the muzzle velocity which a projectile must have when fired from point a
a 20-mm diameter rod made of a ductile material with a yield strength of 350 mpa is subjected to torque of 100 n.m and
The power output of a non-ideal gas turbine cycle having a compressor thermal efficiency of 80% and a turbine thermal efficiency of 90 %., open-cycle gas turbine cycle is 75 MW and its pressure ratio is 16. Air enters the compressor at 520 R and ente..
water at 15 degrees celsius flows through an inclined 8-cm diameter pipe. at sections 1 and 2 p1 186 kpa v1 3.2 ms z1
an escalator brings four people of total 300 kg 25 m up in a building. explain what happens with respect to energy
the following data apply to the auxiliary power unit apu on the boeing 777 single shaft unit driving seperate load
a closed tank has an enclosed airspace above the surface of water which fills the tank to a depth of something over a
---a heat engine operates between two heat reservoirs with temperature of 560 and 280 k. the thermal efficiency of the
A piston cylinder contains 1 kg of R-134a and undergoes a reversible compression process. During the process the R-134a also loses 37 kJ of heat to the environment. If the temperature of the piston remains a constant 20 oC and the initial the pressur..
The following figure shows a body on 25 deg inclined plane. The weight of the body represented by the force W is 66lb. resolve this force at point O into components parallel and perpendicular to the inclined plane.
1 kg of a gas in a piston-cylinder assembly undergoes a Carnot power cycle for which the isothermal expansion occurs at 800 K. The change in specific entropy of the gas during the isothermal compression, which occurs at 400 K is -25 kJ/kg. K. Determi..
A tank that volume is unknown is divided into two parts by a partition. One side of the tank contains 0.01 m3 of refrigerant R-134a that is a saturated liquid at 0.8 MPa, while the other side is evacuated. The partition is now removed, and the refrig..
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