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A wye-connected, three-phase, 50-Hz, six-pole synchronous alternator develops a voltage of 1000 V rms between the lines when the rotor dc field current is 3 A. If this alternator is to generate 60-Hz voltages, find the new synchronous speed, and calculate the new terminal voltage for the same field current.
Give the relationship between standard free energyand equilibrium constant.The relationship between standard free energy and equilibrium constant is given by?GO= -R Tln(K)Where?GOis the std.
A standard practice in refineries is to use a holding tank in order to mix the light naphtha output of the refinery for quality control. During the first six hours of operation of the refinery, the stream feeding the holding tank at 200 kg/min had 30..
Suggest suitable materials of construction for the following applications: a. A 10,000 m3 storage tank for toluene
A solution of nitric acid has a specific gravity = 1.502. Stating that the concentration of nitric acida. molarity
In terms of heat treatment and the development of microstructure, what are two major limitations of the iron-iron carbide phase diagram?
A mixture of perfect gases consist of 3kg of carbon monoxide and 1.5kg of nitrogen at a pressure of 0.1 MPa and a temperature of 298.15 K. Using table 5-1, find the effective molecular mass of the mixture.
A chord subtends an angle of 68° at the centre of a circle of radius 200mm. Find the length of the chord.
A Carnot cycle operating between 600 °C and 25 °C absorbs 1000 kJ of heat from the high-temperature reservoir. The work produced is used to power another Carnot cycle which transfers 1000 kJ of heat from 600 °C to a reservoir at higher temperature..
Determine the longest wavelength (in cm) of X-rays that is still capable of producing diffraction in copper, Cu.
Gas oil at 200 °C is to be cooled to 40 °C. The oil flow rate is 22,500 kg/h. Cooling water is available at 30 °C and the temperature rise is to be limited to 20 °C. The pressure drop allowance for each stream is 100 kN/m2 . Design a suitable exch..
question 1a outline the provisions of occupational safety and health act 2005 with regard to substances hazardous to
The doctor wants to find out the exact time at which the concentration of this antibiotic in the blood peaks in the patient. Determine this time and the concentration of the antibiotic in the blood stream at this time.
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