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Two friends work in the same office. One travels to work by bus, the other cycles. The times taken (in minutes) by each to get to work on a sample of 8 days were:
Calculate the mean and standard deviation for each set of times and use them to compare the travel times for the two commuters.
An elementary two-pole, single-phase, synchronous machine, as illustrated in Figure P12.2.1, has a field winding on its rotor and an armature winding on its stator, with Nf = 400 turns and Na = 50 turns, respectively.
Explain the changes in flow depth when a supercritical flow flows over a smooth hump. Provide theoretical explanation to these changes using concepts of specific energy and total energy. Use the E-Y diagram to support your explanation.
Develop a series of design graphs that can be used to demonstrate acceptable combinations of tubes dimensions
The horsepower output from the prime mover to drive the generator at this load.
5. A patient is placed on a kidney dialysis unit three times a week. The dialyzer has a membrane area of 1 m2 and is operated in a countercurrent mode. The blood flow rate is 200 ml/min and the dialysate flow rate is 500 ml/min. Membrane permeability..
What diameters of inlet and outlet pipes would be required for a flow of 2270kg per hour with a velocity of 15m/s both before and after the reducing valve?
Determine the temperature and phase of water from the following information. If the phase is a vapor-liquid mixture, report the fraction of vapor and liquid.
If a saturated solution of NaHCO3 at 60°C is cooled and comes to equilibrium at 30°C, what percentage of the dissolved salt crystallizes?
A packed tower is designed to recover 98% CO2 from a gas mixture containing 10 % CO2 and 90 % air using water . A relation y = 14 x can be used for equilibrium conditions where y is kg CO2 / kg dry air and x is kg CO2 /kg water. The water to gas r..
A mixture of 25% ammonia gas and 75 % air ( dry basis) is passed upward through a vertical scrubbing tower , to the top of which water is pumped. Scrubbed gas containing 0.5 % ammonia leaves the top of the tower, and an aqueou..
The R2 for which the developed torque would be a maximum.
Consider that you are a senior consulting engineer and that you need to explain the topic in a written report to your customer, who is the managing director of a large company, and a commerce or law graduate.
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