Steam enters the high pressure turbine of a reheat cycle power plant at 3.5 mpa and 350and expands to 0.5 mpa after which it is reheated to 350°c. the steam is then expanded through the low pressure turbine to 7.5 kpa. liquid leaving the condenser at 30°c is pumped to 3.5 mpa and returned to the boiler. each turbine is adiabatic with an efficiency of 85%. the pump efficiency is 80%. the total power output of the turbines is 1000 kw. determine (a) the mass flowrate of the steam (b) the power required to drive the pump and (c) the thermal efficiency of the power plant.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

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

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.