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Topic :: Power
CHEMICAL FLUID MECHANIC - EXAMPLE 3.2 : The terminal velocity of a falling object, v is given by v = sqrt [ 4g (R - r) D / (3Cr) ] where sqrt is the square root of, g = 9.81, D = 0.000208, R = 1800, r = 994.6, m = 0.000893. The Reynold number, L is given by L = rD (v) / m. The C for various conditions are : C = 24 / L for L < 0.1; C = 24 (1 + 0.14 L^0.7) / L for 0.1 <= L <= 1000; C = 0.44 for 1000 < L <= 350000; C = 0.19 - 80000 / L for 350000 < L. Find the value of v for the situation above by trial and error, ^ is power, <= is less than or equal to.
1 3320CHEMICAL FLUID MECHANIC - EXAMPLE 3.3 : The drag coefficient Cd = 0.05 and lift coefficient Cl = 0.4 for a levelled flow aircraft are measured. The velocity of the aircraft is v = 150 ft / s with its weight W = 2677.5 pound-force. (a) Find the value of the lift of the aircraft, L, when it is also its weight. (b) The drag of the aircraft, D = Cd M, L = Cl M. Find the value of D. (c) The power required is P = Dv. If 1 pound-force x (ft / s) = 1.356 W, find the value of P in the unit of Watt or W.
1 2545How to determine peak purity index in Empower software? What is the acceptance criteria of peak purity index to consider the peak purity is pass?
2213Question 82 - (a) The Hyperion sewage plant in Los Angeles burns 8 million cubic feet of natural gas per day to generate power in United States of America. If 1 metre = 3.28084 feet, then how many cubic metres of such gas is burnt per hour? (b) A reservoir of natural gas produces 50 mole % methane and 50 mole % ethane. At zero degree Celsius and one atmosphere, the density of methane gas is 0.716 g / L and the density of ethane gas is 1.3562 mg / (cubic cm). The molar mass of methane is 16.04 g / mol and molar mass of ethane is 30.07 g / mol. (i) Find the mass % of methane and ethane in the natural gas. (ii) Find the average density of the natural gas mixture in the reservoir at zero degree Celsius and one atmosphere, by assuming that the gases are ideal where final volume of the gas mixture is the sum of volume of the individual gases at constant temperature and pressure. (iii) Find the average density of the natural gas mixture in the reservoir at zero degree Celsius and one atmosphere, by assuming that the final mass of the gas mixture is the sum of mass of the individual gases. Assume the gases are ideal where mole % = volume % at constant pressure and temperature.
1 2704Question 83 - The United States of America Energy Information Administration reports the following emissions in million metric tons of carbon dioxide in the world for year 2012 : Natural gas : 6799, petroleum : 11695, coal : 13787. Coal-fired electric power generation emits around 2000 pounds of carbon dioxide for every megawatt hour generated, which is almost double the carbon dioxide released by a natural gas-fired electric plant per megawatt hour generated. If 1 metric ton = 1000 kg and 1 pound = 0.4536 kg, estimate the total energy generated by natural gas in the world for year 2012, in gigawatt hour.
1 2571how i define power factor when some one ask me ,,,,,what is power factor ,,,,,pleas define it simple. (pleas dont use these worlds ,,the difrence bitween apparent power and actual power is power facter )
1 2256i have 500 amp inductive load of motors ,,,pleas tell me how can i calculate for capacitor bank for improving my power factor to 99 .....calcullations for capacitor bank,,,,
1577why power contactor using in DG set's neutral which is using as a stand by load during government electricity shutdown?
FAG,
1622I am called for interview from north east power plant .so, I need some interview question which may help me.
1760Why in power plant projects we see DOL starting method used for motors upto 160 kW instead of star delta method
UCC,
1802
Difference between PowerPlay transformer and power play reports?
How would you compare the computational power of a cortical pyramidal cell with that of a desktop computer?
Power grids in two adjacent states(A&B) are interconnected. Can power grid in state A can be represented by Thevenin Equivalent Circuit. If not explain Why?
What work have you done on full chip Clock and Power distribution? What process technology and budgets were used?
What work have you done on full chip Clock and Power distribution? What process technology and budgets were used?
How to create a power function?
Is it possible to do load testing in POWERMHS? If yes how do you do that?
Hi friends Does anyone have screen shot of POWERMHS and please can anyone post anything which will be helpful to understand POWERMHS. thanks.
what is the day to day work of SAP FICO Consultant. which are the documents,white papers he uses. who will assign him work and in what form, is it a flowchart,word document,power point presentation ?and also what is business blue print and how it is documented(word,flow chart),?? please answer my question
SIR I M STUDENT OF POWER ENGG CAN I GIV PSU XAM 4 NTPC AND WHAT WOULD B THE PROCEDURE
what is power prompt in cognos ep7series?what is the use of this?
what are the advantages of power point presentation with the help of examples.
how can we Upgrad the reports from version Impromptu 6.0 to 7.0 and Power Play from version 6.6 to 7.0 ?
why should we choose VSTET(Visual Studio Team Edition for Testers) and not QTP?pleas give me the reasons for "WHY" we have web and client server app, supports power builder and on windows OS so this is the background of tech and envir things we have and now VSTET is good to use or not? if "NO" then tell me why
I just want to convert the voltage into current i.e. suppose I have 750V & 1A AC power then I want to convert it into 12V & 62A DC power only difficulty is that I don't want to use the tranceformer. Simply to say, I want to make the step-down without using tranceformer. Please, give me some ideas. And also I want the relation between Magnetic Induction & Weight of the body can be levitated. Or I can say, how much of magnetic induction requires to lift 500gms weight? I am heartily thankful to you.
