If the shear vectors, in Fig. 5.1 were moved from the top and bottom faces of the crystal, and applied to front and rear surfaces, with the forward vector pointing upwards and the rear one downwards, could any of the Frank?Read dislocation segments move as a result of this shearing stress? Explain.
What will be an ideal response?
In order for the applied shear stress to be able to move a dislocation it should have a finite component in the direction of the dislocation’s Burgers vector. As may be seen in the abovefigure, the given shear stress is perpendicular to the Burgers vector in all three parts of theFrank?Read Source dislocation. This stress will not move the dislocation.
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Syringe pumps oftentimes fail because reagents adhere to the ceramic piston and deteriorate the seal. Trident Chemical developed an integrated polymer dynamic seal that provides a higher sealing force on the sealing lip, resulting in extended seal life. One of Trident’s customers expects to reduce down time by 30% as a result of the new seal design. If lost production would have cost the company $110,000 per year for each of the next 4 years, how much could the company afford to spend now on the new seals? Use a MARR of 12% per year.
What will be an ideal response?
Which one of the following qualifications is not necessary to be a successful manicurist:
What will be an ideal response?
In a DX system operating normally, the refrigerant leaving the evaporator should be _____
a. all liquid b. a liquid/vapor mixture c. a superheated vapor d. a subcooled liquid
What senses the line temperature in electronic expansion valves?
A) Magnetic induction thermal energy sensors B) Bimetallic snap disks C) Thermistors D) Magnetically ballasted electronic bulbs