Engineering, 14.07.2020 23:01 sydc1215
EX2: An interconnected 60 Hz power system consists of one
area with three turbine-generator units rated 1000, 750 and
500 MVA respectively. The regulation constant of each unit is R = 0.05 pu
based on its own rating. Each unit is initially operating at one half of
its own rating, when the system load suddenly increase by
200 MW. Determine (a) the per unit area frequency
response characteristic (B) on 1000 MVA system base. (b)
the steady state drop in area frequency and ( C ) the
increase in turbine mechanical power output of each unit.
Assume APref of each turbine generator remain constant.
Neglect losses and the dependence of load on frequency.
Answers: 2
Engineering, 04.07.2019 18:10
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
Answers: 3
Engineering, 04.07.2019 18:10
The higher the astm grain size number, the finer the gran is. a)-true b)-false
Answers: 2
Engineering, 04.07.2019 19:10
What is the major difference between thermoplastics and thermosetting plastics from the polymerization structure point of view?
Answers: 2
Engineering, 04.07.2019 19:20
The process in which the system pressure remain constant is called a)-isobaric b)-isochoric c)-isolated d)-isothermal
Answers: 3
EX2: An interconnected 60 Hz power system consists of one
area with three turbine-generator units r...
Mathematics, 31.08.2020 01:01
Mathematics, 31.08.2020 01:01
Engineering, 31.08.2020 01:01
Biology, 31.08.2020 01:01
Biology, 31.08.2020 01:01
Chemistry, 31.08.2020 01:01
History, 31.08.2020 01:01
History, 31.08.2020 01:01
Mathematics, 31.08.2020 01:01
Computers and Technology, 31.08.2020 01:01
Mathematics, 31.08.2020 01:01