1A 60 Hz power system consists of three turbine units with generation of 1000, 750, and 500 MVA, respectively. Regulation of each unit is 5% based on its rating. Initially they were operating at half of their own ratings, when the system load suddenly increases by 200 MW. Assuming D=0, determine equivalent area frequency response characteristic (B) on a 1000 MVA base, Afss, AP1, AP2, and AP3.

1A 60 Hz power system consists of three turbine units with generation of 1000, 750, and 500 MVA, respectively. Regulation of each unit is 5% based on its rating. Initially they were operating at half of their own ratings, when the system load suddenly increases by 200 MW. Assuming D=0, determine equivalent area frequency response characteristic (B) on a 1000 MVA base, Afss, AP1, AP2, and AP3.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

An electric train made up of two cars, each weighing50,000lb, is connected by couplings of stiffness equal to16,000lb/in., as shown in the figure below. Determine the natural frequency of the system.
The drive is by V-belts from an electric motor running at 1500 r.p.m. A compressor, requiring 75000W is to run at about 500 r.p.m. The diameter of the pulley on the compressor shaft must not be greater than 1.2 meter while the centre distance between the pulleys is limited to 1.85 meter. The belt speed should not exceed 1500 m/min. Determine the number of V-belts required to transmit the power if each belt has a cross-sectional area of 3 cm2, density 1100 kg/m3 and an allowable tensile stress of 3 MPa. The groove angle of the pulley is 50°. The coefficient of friction between the belt and the pulley is 0.3. Calculate also the length required of each belt.
Discussion: 1- Measuring the angle of phase shift for every state. set the AC voltage source 15V and using the data in the following table NO. Frequency | Capacitance | Resistance | Inductance 1 2KHZ 0.1uF 100Q 0.1mH 2 20 KHZ 0.1 yF 100 Q 0.1 mH 3 200 KHZ |0.1 pF 100 Q 0.1 mH 2- Draw the phase shift for every state as graph .
If the frequency of the pump is halved, what will happen to the power consumed? P0 = initial power consumption A. 1/8 P initial B. 2 P initial C. 1/4 P initial D. 4 P initial
Q.12) The compressor of a pneumatic plant provides 20 m3/min of free air at 7 bar gauge. The average systemdemand is 15 m3/min free air at a pressure fluctuating between 6 and 7 bar gauge. A receiver tank is to be placed on the line to buffer the pressure and consumption fluctuations. If the compressor is controlled by starting and stopping , determine the volume of tank which will provide 20 start/stop's per hour. a)15.23 m3 b)21.22 m3 c)18.83 m3 d)11.25 m3 e)12.45 m3
The figure below shows a conducting rod sliding along a pair of conducting rails. The conducting rails have an angle of inclination of θ = 32.0 degrees. There is a resistor at the top of the ramp that connects the two conducting rails (R = 1.5 ohms). The mass of the rod is 0.43 kg. The rod starts from rest at the top of the ramp at time t = 0. The rails have negligible resistance and friction, and are separated by a distance L = 15.3 m. There is a constant, vertically directed magnetic field of magnitude B = 1.40 T. What is the rod's terminal speed?
A pump increases water pressure from 1 bar to 4 bar. If the flow rate of the water is 150 l/min, determine its power? a)750 W b)150 W c)600 W d)1000 W e)250 W
A four-cylinder four-stroke petrol engine with the following specifications: - The bore(diameter) = 20 cm - The stroke = 30 cm - The compression ratio = 8 - The indicated power = 33 KW - The engine speed = 2500 rpm - The indicated thermal efficiency = 35% - The friction power = 25 kW - The calorific value ( heating value) = 42000 kJ/kg . Determine the following: a) The indicated mean effective pressure. b) Thermal efficiency. c) Specific fuel consumption per hour. d) The Torque (given K = 1.4)
The efficiency of a hydraulic turbine-generator unit is specified to be 85 percent. If the generator efficiency is 96 percent, the turbine efficiency is (a) 0.816 (b) 0.850 (c) 0.862 (d ) 0.885 (e) 0.960
4 Which of the following could not be the power coefficient of a slow speed wind turbine? a. 0.444 b. 0.3396 c. 0.327 d. 0.265
A jet engine is bolted to a stationary test stand and run at full thrust. Air enters the engine at a rate of 80lbm/sec and fuel enters the engine at a rate of 0.8 lbm/sec. Additionally, the following values are known:Pinlet = 13 psi Pexhaust = 14.7 psiVinlet = 500 ft/sec Vexhaust = 1500 ft/secAinlet = 4 ft2 Aexhaust = 3 ft2Find the reaction force required to hold the engine in place on the test stand.
Give definition of unreliability F(t)of a component as function of time.