Water is the working fluid in a rankine cycle. steam enters the turbine at 1400 lbf/in^2 and 1000 degrees f. the condenser pressure is 2 lbf/in^2. both the turbine and pump have isentropic efficiencies of 85%. the working fluid has negligible pressure drop in passing through the steam generator. the net power output of the cycle is 1x10^9 btu/h. cooling water experiences a temperature increase from 60 degrees f to 76 degrees f, with negligible pressure drop, as it passes through the condenser. determine for the cyclea) the mass flow rate of steam, in lb/hb) the rate of heat transfer, in btu/h, to the working fluid passing through the steam generator. c) the thermal efficiency. d) the mass flow rate of cooling water, in lb/h

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.

Condition monitoring is a major component of. (clo4) a)- predictive maintenance. b)-preventive maintenance c)-proactive maintenance d)-reactive maintenance.

Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer