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A 10-hp, 250-V shunt motor has an armature circuit resistance of 0.5 Ω and a field resistance of 200 Ω. At no load, rated voltage, and 1200 r/min, the armature current is 3 A. At full load and rated voltage, the line current is 40 A, and the flux is 5% less than its no-load value because of armature reaction. Compute the full-load speed.
Express the maximum radius (Rmax) and maximum thickness (Tmax) in terms of bulk oxygen concentration, Cb (mol/mL), diffusivity of oxygen through the device D (cm2/s) and maximum oxygen consumption rate, Vmax (mol/mL/s).
Which do you think would be the greater health hazard: the release of a radioactive nuclide of Sr or a radioactive nuclide of Xe into the environment? Assume the amount of radioactivity is the same in each case.
Calculate the energy required to raise the temperature of 1.0 mol Ag by 1.0C (called the molar heat capacity of silver). c. It takes 1.25 kJ of energy to heat a sample of pure silver from 12.0C to 15.2C. Calculate the mass of the sample of silv..
Assuming that there are no other significant side reactions, calculate masses of alcohol and ether produced, per 1000 kg of allyl chloride fed to the reactor.
HEAT TRANSFER PROBLEM NO18 - The configuration of a furnace can be approximate as an equilibrium triangular duct which is usually long enough so that the end effects are negligible , the hot wall is maintained at 900 k and has an emissivity e1 = 0..
The gases enter the condenser at 230 °C and leave at 50 °C. The cooling water enters the tubes at 20 °C and leaves at 50 °C. Suggest suitable materials of construction for the shell and the tubes.
All other conditions are the same as those specified in Example 5 of this chapter, except that Bi is not given. 8. Present a detailed derivation of Eq. (481 in this chapter, using, as a starting point, any of the other equations that are given.
Assume negligible miscibility between the aqueous and organic liquids in each other, and ignore any change in density on removal or addition of the enzyme to either stream.
A 30.0 liter cylinder of a gas containing 97.0 mole% CO and 3.0% CO2 is delivered to your plant. The gauge on the tank reads 2000 psi. Several days later, the gauge reads 1875 psi, indicating a leak. The storage room in which the cylinder is kept has..
Calculate the theoretical stages needed to separate a 10 mole% ethanol liquid saturated feed into a 80 mole% distillate and a 0.1 mole% bottoms at 1 atmosphere pressure.
part-1why fiuids are importantnbspin chemical engineering1. enormous number of materials normally exist fias gases or
Operation of a modern telephone handset, In a modern telephone handset, the microphone uses a piezo-electric crystal and the earpiece is a miniature loud speaker using a moving coil and a permanent magnet.
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