Mechanical Engineering Answers

Refrigerant-134a enters the evaporator coils placed at the back of the
freezer section of a household refrigerator at 120 kPa with a quality of 20
percent and leaves at 100 kPa and -20°C. If the compressor consumes
450W of power and the COP the refrigerator is 1.2, determine (a) the mass
flow rate of the refrigerant and (b) the rate of heat rejected to the kitchen
air.

Refrigerant-134a enters the condenser of a residential heat pump at
800 kPa and 35°C at a rate of 0.018 kg/s and leaves at 800 kPa as a
saturated liquid. If the compressor consumes 1.2 kW of power, determine
(a) the COP of the heat pump and (b) the rate of heat absorption from the
outside air.

The food compartment of a refrigerator, is maintained at 4°C by
removing heat from it at a rate of 360 kJ/min. If the required power input
to the refrigerator is 2 kW, determine (a) the coefficient of performance of
the refrigerator and (b) the rate of heat rejection to the room that houses
the refrigerator.

Please solve my question
https://clip2net.com/s/3XWQoWv

The steam is heated raise it's temp yo 150 degree Celsius show the process on a sketch of the p v diagram and evaluate the pressure increase in enthalpy increase in internal energy increase in entropy of steam and the heat transfer evaluate also the pressure at which the steam become dry saturated

A rigid vessel of 0.80mmm contains 1 kg of steam at a pressure of 2 bar evaluate the specific volume temperature dryness fraction internal energy enthalpy and entropy

https://screenshot.net/tw/gg5p7un

I can't figure out this question,please help me for it,thanks!

Explain the concept of obtaining a reflection about an arbitrary line starting from the plain reflection about an axis. How do you obtain the orthographic projections of 3D geometric data base?

Draw a cylindrical coordinate robot and describe the degrees of freedom for this configuration

Explain the use of DO loops in NC part programming with the help of a suitable Example.