If the refrigerating capacity is 50 kw, determine: (a) the mass flow rate of the refrigerant, in kg/s. (b) the power input to the compressor, in kw. (c) the coefficient of performance. (d) the isentropic compressor efficiency, in percent. (e) the rate of entropy production, in kw/k, for the compressor.

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false

Steam enters a converging nozzle at 3.0 mpa and 500°c with a at 1.8 mpa. for a nozzle exit area of 32 cm2, determine the exit velocity, mass flow rate, and exit mach number if the nozzle: negligible velocity, and it exits (a) is isentropic (b) has an efficiency of 94 percent