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An industrial plant consumes 500 kW at a lagging power factor of 0.6.
(a) Find the required kVA rating of a synchronous capacitor to improve the power factor to 0.9.
(b) If a 500-hp, 90% efficient synchronous motor, operating at full load and 0.8 leading power factor, is added instead of the capacitor in part (a), calculate the resulting power factor.
She wishes to calculate a project's PW with estimated costs of $35,000 now and $7000 per year for 5 years beginning 1 year from now with increases of 10 % per year thereafter for the next 8 years. Use a real interest rate of 12% per year to make t..
Determine the minimum electric potential difference (in volts) that must be applied to accelerate an a-particle so that on interaction with a hydrogen atom, a ground state electron will be excited to n = 6
For this assignment you will undertake an analysis based on a self-designed fictitious study that utilizes statistical analyses. You will first develop a fictitious problem to examine. It can be anything.
The value of the product is $14.08 per pound, and the plant operates 300 days per year. Assuming no costs are involved other than those mentioned, what is the maximum annual profit that can be obtained under these conditions?
determine which heat exchanger is cheaper by comparing the capitalized costs.
Develop a mathematical model that describes how the pressure in the tank varies with time.
Write a differential mole balance on phosphoric acid and provide an initial condition. [Start by defining np (k mol) to be the total quantity of phosphoric acid in the tank at any time.]
The U.S. Environmental Protection Agency (EPA) recommends that 222Rn levels not exceed 4 pCi per liter of air (1Ci=3.7x10^10 decay events per second; 1 pCi =1x10^-12 Ci).
Should the lease-and-flood arrangement be accepted? How should this proposal be presented to the company board of directors who understand and make it a policy to evaluate by discounted-cash-flow rate of return?
A rectangular loop is placed in the field of an in- finitely long straight conductor carrying a current of I amperes, as shown in Figure P12.1.2. Find an expression for the total flux linking the loop, assuming a medium of permeability µ.
Determine the composition of the vapor at boiling point and determine the Dew point of the mixture - determine the composition of streams leaving the first FV unit.
The production rate obtained in the fourth year is then held constant until the value of the property is paid off. What would have been the annual depreciation cost if the straight-line method based on time had been used?
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