Determine the work for the process
Refrigerant 134a undergoes a constant pressure process from saturated vapor at -18.8°C to a final temperature of 20°C. Determine the work for the process, in kJ per kg of refrigerant.
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What is the source frequency for which current amplitude is maximum. Obtain this maximum value.
Explain the concept and benefit of the following machinery: (a) Computer Numerical Control, CNC (b) Electrical Discharge Machining, EDM (c) Rapid Prototype, RP.
Determine the final temperature and the change in volume for the process. Sketch the process on a p-v diagram. Neglect changes in kineticand potential energy.
In any ac circuit, is the applied instantaneous voltage equal to the algebraic sum of the instantaneous voltages across the series elements of the circuit? Is the same true for rms voltage?
Determine the mass of the water and the magnitude and direction of the work and heat transfer for the process. Sketch the process on a p-v diagram.
A power transmission line feeds input power at 2300 V to a stepdown transformer with its primary windings having 4000 turns. What should be the number of turns in the secondary in order to get output power at 230 V?
At a hydroelectric power plant, the water pressure head is at a height of 300 m and the water flow available is 100 m3 s-1. If the turbine generator efficiency is 60%, estimate the electric power available from the plant (g= 9.8 m s-2).
Determine the final temperature of the water. Use the incompressible substance model for the water and the copper with specific heats of c of the copper = 0.385 kJ/(kg x K).
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