Afossil-fired power plant uses an ideal saturated rankine cycle with a steam flow rate of 6500 lbm/hr. the boiler pressure is 1500 psia; and the condenser pressure is 2 psia. the plant capacity factor is 80%. determine: (a) the feedwater pump specific work, (b) the net power output (in kw or mw) of the cycle, and (c) the plant thermodynamic efficiency.

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.