One and one-half pounds of water within a piston-cylinder assembly execute a carnot power cycle. during isothermal expansion, the water is heated at 500 degree f from saturated liquid to saturated vapor. the vapor then expands adiabatically to a temperature of 100 degree f and a quality of 70.38%. sketch the cycle on p-v coordinates. evaluate the heat transfer and work for each process, in btu. evaluate the thermal efficiency.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?