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A balanced electrical industrial plant load of 9.8 MW with 0.8 lagging power factor is supplied by a three-phase 60-Hz system having a maximum rating (load-carrying capacity) of 660 A at 11 kV (line-to-line voltage).
(a) Determine the apparent power and the reactive power drawn by the load.
(b) Additional equipment, consisting of a load of 1.5 MW and 0.7 MVAR lagging, is to be installed in the plant. Compute the minimum rating in MVA of the power factor correction capacitor that must be installed if the rating of the line is not to be exceeded. Find the system power factor.
(c) If the capacitor, consisting of three equal sections, is connected in delta across the supply lines, calculate the capacitance required in each section.
The heat of formation of (NH4)2SO3 (aq) at 25°C is -890.0kJ/mol, and that of NH4HSO3 (aq) is -760 kJ/mol. The heat capacities of all liquid solutions may be taken to be 4.0 J/(g*°C) and that of the flue gas may be that of nitrogen. Evaporation of ..
List out the different biological process involving acids and bases with relevant equations and in adverse conditions how is the pH level maintained in biological systems?
If the company demands a 15 percent return on any unnecessary investment, which of the four designs should be accepted?
A Hollow steel sphere contains 100 watt electrical filament inside it for heating. The other relevant data are as follows- Internal and external radius of the sphere = 0.24 and 0.32 m respectively.
The recovery of each main component in each product is to be 98%. For example, 98% of the propane in the feed stream is to appear in the propane-rich product, and 98% of the combined pentanes in the feed stream is to appear in the bottoms product ..
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The scaling factor k must be such that the total probability is one. Therefore, we have k = 1/36. The table shows one instance where x + y >5, which is x = 3, y = 3. The probability is p = 9/36 = 1/4.
Steam at 100°C is passed into a condenser at a rate of 500 kg/h and leaves as water at 60°C. If the condenser is supplied with cooling water which enters at 20°C and leaves at 40°C, calculate:- how much heat per hour is extracted from the steam.
A solution of the two components that contains 62% mol toluene is slowly heated at constant pressure. When the solution begins to boil the temperature reads 120 °C. What is the pressure?
If the mass percent of vanadium in the ore was 58.1%, what was the mass of the ore sample? Which of the four transition metal ions in this titration has the highest oxidation state?
In Number 1 it was assumed that the input and output flow rates could be independently varied. Consider a situation in which the outlet flow rate is a function of the height of liquid in the tank. Write the modelling equation for tank height assum..
The reactor is jacketed by water at a temperature of 200C. The overall heat transfer coefficient has been estimated at 300 J/(m2.s.K), while the heat transfer area is 0.75 m2. Mixing is ensured through an agitator, which contributes a work of 12 KW..
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