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Topic :: Power
A power transformer 4MVA/11KV/0.415Kv has been out of use in 12years. what maintenance actions/test need to be carried out before energizing.
1 1379can we choose current transformer secondary, to calculate residual flux in a power transformer, so as its saturation is close to the saturation level of power transformer?
1 1578QUANTUM BIOLOGY - EXAMPLE 33.8 : (a) Let ^ be the symbol of power where 1 ^ 2 = 1 x 1 = 1, 2 ^ 2 = 2 x 2 = 4. Let the number of electrons in a human body to be 10 ^ 28 = A, the number of all of the grains of sand on Earth planet to be 7 x (10 ^ 20) = B, the number of all the stars in the visible sky to be 8 x (10 ^ 3) = C. By assuming that every star in the visible sky has the same number of grains of sand as on Earth planet, prove by mathematical calculations that there are more electrons in one human body compared to the number of all of the grains of sand on the stars in the visible sky. (b) The incoming solar radiation to the Earth's surface is mainly from sun. Around 51 % of the radiation is absorbed by Earth's surface. Around 19 % is absorbed by atmosphere and clouds. In term of reflection, 4 % of the radiation is from surface of Earth, 6 % is reflected by atmosphere and the rest is reflected by clouds. Find the percentage of radiation absorbed by and reflected by biological beings on Earth, with reason for your response.
1 2295QUANTUM BIOLOGY - EXAMPLE 33.9 : (a) Let ^ be the symbol of power where 10 ^ 1 = 10, 10 ^ 2 = 100, 10 ^ 3 = 1000 etc. Total energy consumption of the brain is about 25 Watts, whereas a Blue Gene computer requires 1.5 Mega Watts. Blue Gene computer performs at 1 petaflop. In a human body, there are approximately 10 ^ 16 synapse operations per second i. e. at least 10 petaflops. Prove by calculations that a human brain is more energy efficient than a Blue Gene computer. (b) Quantum effects and quantum entanglement in the brain are identical to quantum gravity and string theory. If one is true, the other is true. What conclusion can be made if quantum effects in the brain and quantum gravity are true?
1 2134In a power conditoining unit (inverter) of a solar plant when we measure the d.c. current fed by different strings of solar plates to inverter, the current in the negative wire is less almost by 1 ampere to the current in its positive wire say current in positive wire 5 A , then current in negative wire of the same string is 4 A. Since the current entering should be equal to current leaving then why the current is noticably less in negative wire.
1 1664Two electric lamps 40 W, 220 V each are connected in series across 220 V. What is the power consumed by the connection?
1 1477What is the difference between security constraint unit commitment and security constraint optimal power flow?
1 1764ACCOUNTING AND FINANCIAL ENGINEERING - EXAMPLE 34.13 : (i) In the Present Value Multiplication Rule, let PV = present value, Ra = interest rate for first discount, A = duration for first discount; Rc = interest rate for second discount, C = duration for second discount. Let PV = [ 1 / (1 + Ra) ^ A ] [ 1 / (1 + Rc) ^ C ] where ^ is the symbol of power : 3 ^ 2 = 3 x 3, 2 ^ 3 = 2 x 2 x 2. (a) For discounts involving 8 % / year for 3 years and 10 % / year for 9 years, find the value of PV. (b) If Re = interest rate for third discount, E = duration of third discount, form a mathematical equation of PV as a function of A, C, E, Ra, Rc, Re. Note : Discounts are available in the purchase of certain biochemical engineering instruments. (ii) Let R = nominal interest rate related to growth rate of money, r = real interest rate related to growth rate of purchase power. If I = inflation, where the unit of R, r and I is %, find the mathematical relatonship of r as a function of R and I.
1 2082ACCOUNTING AND FINANCIAL ENGINEERING - EXAMPLE 34.13 (CORRECTION) : (i) In the Present Value Multiplication Rule, let PV = present value, Ra = interest rate for first discount, A = duration for first discount; Rc = interest rate for second discount, C = duration for second discount. Let PV = [ 1 / (1 + Ra) ^ A ] [ 1 / (1 + Rc) ^ C ] where ^ is the symbol of power : 3 ^ 2 = 3 x 3, 2 ^ 3 = 2 x 2 x 2. (a) For discounts involving 8 % / year for 3 years and 10 % / year for 9 years, find the value of PV. (b) If Re = interest rate for third discount, E = duration of third discount, form a mathematical equation of PV as a function of A, C, E, Ra, Rc, Re. Note : Discounts are available in the purchase of certain biochemical engineering instruments. (ii) Let R = nominal interest rate related to growth rate of money, r = real interest rate related to growth rate of purchase power. If I = inflation, where the unit of R, r and I is %, find the mathematical relationship of r as a function of R and I.
1 1995ACCOUNTING AND FINANCIAL ENGINEERING - EXAMPLE 34.15 : Based on Time Discounting of Money, let y = x / (1 + r) ^ n, where ^ = power, r = interest rate for the period in decimal value, n = number of periods, y = current value, x = future value. According to Present Value Addition Rule, the present value of a set of future payments is equal to sum for present value of each of the payments. In an engineering business, 3 future payments are to be made : $100 after 1 year; $500 after 2 years; $200 after 3 years. (a) Form an equation of y as a function of r. (b) Find the value of y in 5 decimal places if r = 8 %.
1 1974
What work have you done on full chip Clock and Power distribution? What process technology and budgets were used?
Hi friends Does anyone have screen shot of POWERMHS and please can anyone post anything which will be helpful to understand POWERMHS. thanks.
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pls ,send me technical questions of jindal steels and power ltd
2. You are required to prepare a Profit & Loss Account for the year ending 31st December, 2007 and the Balance Sheet on that date. The Trial Balance of XYZ Ltd. for the year ended 31st December 2007 is as follows:- Trial Balance of XYZ Ltd. as on 31st Dec. 2007 Debit Balances Rs. Credit Balances Rs. Materials used 3,50,000 Sales(including 2% Sales tax) 9,18,000 Cost of Labour 1,50,000 Sale of Scrap 100 Stock, finished and work in process on 31st December, 2006 50,000 Rent received 2,000 Wages : Factory Staff 15,000 Discounts 2,750 Directors Remuneration 50,000 Recovered against fire claim re : Stock 5,000 Salaries : Clerical Staff 75,000 Capital : Equity 25,000 Insurances : Workmen’s Compensation 1,500 Preference- 9% 8,000 General, fire etc. 2,000 Creditors 1,56,000 Directors’ Life Insurance 1,500 Provision for Taxation 1,05,000 Maintenance : Buildings 1,000 Profit & Loss Account 13,750 Plant and Machinery 12,500 Rent and Rates of premises and hire of plant 20,000 Heat, Light and Power 15,000 Experimental and Laboratory Expenses 10,000 Canteen Expenses 5,000 Staff Welfare expenses 2,500 Motor Expenses 12,500 Professional Charges 2,800 Postage and Telephone 3,500 Books, Printing and Stationery 11,000 Sundry expenses 10,000 Carriage and Packing on Sales 3,300 Discounts 5,000 Debtors 1,78,000 Freehold Property 50,000 Plant and Machinery 12,500 Fixtures and Fittings – Offices 3,500 Office machinery and Equipment 3,000 Motor Car and Van 6,500 Stock of materials on 31st Dec. 2007 1,20,000 Bank 38,000 Sales Tax Paid 15,000 12,35,600 12,35,600 Depreciation is to be provided at the following rates: Plant and Machinery 10% Fixture and Fittings 05% Office Machinery, etc. 10% Motor Vans and Cars 25% The stock of finished goods and work in progress as on 31st December, 2007 was Rs. 35,000. Provide for preference dividend and ordinary dividend at 10%. The total taxation liability is estimated at Rs.1,50,000 of which Rs. 75,000 relates to the current year. Debtors include Rs. 10,000 deposited as security against government contracts. The Works Manager is paid partly by salary and partly by a commission; he is entitled to a commission of 5% on the amount by which the surplus in the factory cost exceeds 20% of the sales for the period. Charge the commission if any in the Profit and Loss Account.
plz you help about Que paper of mahagenco previous your,any model paper relad to it{maharastra power genration}
asked about the power transimmisions and types of power drives and about milling different process types and differnce between straddle milling and gang milling
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I need the complete syllabus and model Question paper for Written exam of JINDAL STEEL AND POWER LTD.,for MECHNAICAL ENGINEERING branch
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what is a reactive power? what is the relation with power factor?
please tell no. & add. of consultancy who recruit me in power plant as instrumen engg. present i m working in power plant as ass.t instrument engg. thanku mahesh 09226562826
can anybody send me some real time screenshots of mapping in informatica powercenter. i will be vary thankful to him. my e-mail id :- prakashkumar.kumhar@gmail.com
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Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault
