Consider a solar-pond power plant that operates on a simple ideal rankine cycle withrefrigerant-134a as the working fluid. the refrigerant enters the turbine as a saturated vaporat 1.4 mpa and leaves at 0.7 mpa. the mass flow rate of the refrigerant is 3 kg/s. show the cycle on a t-s diagram with respect to saturation lines, and determine

(a) the thermalefficiency of the cycle and

(b) the power output of this plant.

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Technician a says that in a worm gear steering system, most excessive steering free play is usually found in the gearbox. technician b says that in a rack-and-pinion steering system, excessive free play can be found in the bushings. who is correct?

Give three differences between corrosion of metals and the corrosion of ceramics? what is static fatigue?