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A dc series motor operates at 750 r/min with a line current of 100 A from the 250-V mains. Its armature-circuit resistance is 0.15 Ω and its series-field resistance is 0.1 Ω. Assuming that the flux corresponding to a current of 25 A is 40% of that corresponding to a current of 100 A, determine the motor speed at a line current of 25 A at 250 V.
Describe two potential options for improving the blood compatibility of biomaterials, discuss their potential for ultimately improving blood compatibility and describe any engineering challenges to implementing these to practice.
Eliminate Differences in composition and eliminate differences in temperature, pressure and phase
A condenser is required to condense n-propanol vapour leaving the top of adistillation column. The n-propanol is essentially pure, and is a saturated vapourat a pressure of 2.1 bara.
where and Qp are constants for a given gas-polymer pair. Consider the diffusion of hydrogen through a poly (dimethyl siloxane) (PDMSO) sheet 20 mm thick.
Explain why there are doubts incorporate zinc into transition elements mentioned properties of transition elements that are not owned by zinc
Enumerate and discuss the physical conditions that must be met in order for a caving mining method can be considered for ore extraction technique.
Approximately 2.0 104 gal nitric acid was spilled. Assume that the acid was an aqueous solution containing 70.0% HNO3 by mass with a density of 1.42 g/cm3. How much sodium carbonate was required for complete neutralization of the spill, and how ..
The reaction between oxygen and organic material is a/an __________ reaction. 1. exothermic 2. endothermic 3. biochemical 4. photochemical
If the face opening for a laboratory hood installation is to be 2 feet high and 5 feet wide, what volumetric flow rate is required to generate a face velocity of 100 ft/min?
10g of steam at l00°C and a pressure of one atmosphere condensing into water at the same temperature and pressure. (The latent heat of vaporization of water is 22571 Jg^-1).
Dry ice is placed in the bottom of a capillary tube 6.2 cm long. Air is blown across the top of the tube.
For what reasons did congress enact the Emergency Planning Community Right to Know Act? How is this Act related to OSHA, RCRA, SARA, and CERCLA? What are the major provisions of the EPCRTKA?
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