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Topic :: Power
Question 31 – For liquid benzene, the CP constants are : a = 129440, b = - 169.5, c = 0.64781. Reference temperature is 298 K. The temperature of benzene is 60 degree Celsius. Calculate the enthalpy of benzene by using the formula H = a (DT) + (b/2) (T^2 – TREF^2) + (c/3) (T^3 – TREF^3) where ^ is power, DT is temperature difference with TREF = 298 K. H is in J / kmol. DT = T – TREF.
1 2721I am an American living in Vietnam and I have recently gotten a refrigerator from Japan and it is rated for 100 vac, but the power here is 220 so I bought a voltage stabilizer it has a 1 kva output rating. Can you please tell me what the amperage is? I'm confused and without a working fridge.
BSL,
1733please let me know , we have installed two separate motor for fire fighting system 1) 60 hp and 2) 15 hp the load is 74 AMPS and 20 AMPS then tell me the main power cable in Aluminum will be what thickness , the length is 225 mt from the main utility to fire pump house
1 2642How power is transferred from one winding to another in an auto-transformer? A) electrically B) magnetically C( both a & b D) neither of above
ISRO,
3 4188Leading power factor means what? what is the power factor value while in power factor is leading? is power factor greater than one? In some cases i heard pf 0.8 leading then what about 0.8 lagging?
1 2617if field breaker of generator is closed prior to its rated speed on a power generating unit. what will be the effect on generator, unit transformer and starting transformer.
1750Question 38 - 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 2443What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?
2760Dear all, I'm manikandan I have done by DIPLOMA EEE from 2011 , I have 5 years of experience from Power plants instrumentation field , which one field is give long life & which one field is best ,I confused a lot And also I'm studying AMIE, can I choose which field from Section B examination?
1 2999
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.
