Find the fluxes of exergy associated with the energy fluxes
A heat pump has a coefficient of performance of 2 using a power input of 2 kW. Its low temperature is To and the high temperature is 80oC, with an ambient at To. Find the fluxes of exergy associated with the energy fluxes in and out.
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If the correlation coefficient r is equal to 0.726, find the coefficient of determination and the coefficient of non-determination.
If the cylinder head is milled so that the original clearance is reduced to 0.4 cm, by what percentage will the engine efficiency change if the engine retains the original stroke?
Sand drops from sationary hopper at the rate of 5kg/s on to a conveyor belt moving with a constant speed of 2m/s. What is the power delivered by the motor drawing the belt?
The heat engine does maximum work equal to 600kJ. Determine the heat supplied to the heat engine, heat rejected to the heat sink, and the temperature of the heat sink.
An air compressor takes air in at the state of the surroundings 100 kPa, 300 K. The air exits at 400 kPa, 200°C at the rate of 2 kg/s. Determine the minimum compressor work input.
An air conditioner can produce a 120 kJ/min cooling effect while rejecting 2.5kW of heat. What is its COP and the electricity it consumes?
A pendulum bob of mass 'm' is hung from a light string,the bob then moves in a horizontal circle of radius 'r' and the string makes an angle alpha with the vertical. If the angular velocity of the bob is 'w' and 'g' is the acceleration due to grav
What do you understand by closed packed planes and closed packed direction in the arrangement of atoms? Justify their presence in many metals? State the effect of grain size on mechanical behavior of metal?
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