Abasic open gas turbine cycle uses a pressure ratio of 8. the isentropic efficiency of both the turbine and compressor is 90%. the low pressure in the cycle is 100 kpa. the temperature limits in the cycle are 20°c and 1250°c. take k = 1.4, cp = 1.005 kj/kg k and the mass flow as 25 kg/s. (a) calculate the cycle efficiency and the nett power output. (b) if the fuel calorific value is 41mj/kg estimate the air fuel ratio.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater

Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan