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1. A heat engine operating on the Carnot cycle has an efficiency of 65%. The waste heat from the cycle is rejected to the atmosphere at 20 deg. C. at a rate of 250 kW. What is the temperature of the heat source driving the engine in deg. C?
2. For the heat engine in the above problem, what is the power output in kW?
An engineer determines that a 40 cm long rod of 1020 grade steel will be subjected to a tension of 20 kN.
mercury is often used in barometers. this is because tje vapor pressure of mercury is low enough to be ignored and
Air enters an adiabatic nozzle at 5.18 MPa and 400K with a velocity of 20 m/s. The air exits at 2.00MPa. Determine the maximum exit velocity for this nozzle.
canon at an angle 30 degree tube is rotating at an axes with anguar velocities w1 and w2 2 and 5 rad/s and tube blows a ball at b with constant rate 7 m/s . what is velocity and acceleration of ball at tube end ball is at distance of 3m from tube ..
air undergoes a polytropic expansion process in a piston-cylinder assembly from 75 psia and 300 f to 15 psia. employing
part a.the slender bar ab rests on a smooth surface at b and is attached to a collar a that slides freely on the smooth
a system consisting of 3 lb of water vapor in a piston-cylinder assembly initially at 350 degrees f and a volume of
a rigid container having a volume of 1.2 m3 contains 10 percent by volume of liquid water at 100 kpa. the remaining
Electricity might be used to run the fan to draw air through the system, and also to run a chiller - What is a typical COP for a commercial chiller?
the particle a is mounted on a light rod pivoted at o and therefore is constrained to move in a circular arc of radius
a power cycle operate between hot and cold reservoirs at 600k and 300k receptively. at steady state the cycle develops
Refrigerant-134a is throttled from saturated liquid state at 7 bar to a pressure of 1.4 bar. Determine the temperature drop during this process and the final specific volume.
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