When is heat transfer through a fluid conduction and when is it convection? For what case is the rate of heat transfer higher? How does the convection heat transfer coefficient differ from the thermal conductivity of a fluid?
What will be an ideal response?
Heat transfer through a fluid is conduction in the absence of bulk fluid motion, and convection in the presence of it. The rate of heat transfer is higher in convection because of fluid motion. The value of the convection heat transfer coefficient depends on the fluid motion as well as the fluid properties. Thermal conductivity is a fluid property, and its value does not depend on the flow.
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?On the metric vernier caliper, the vernier scale has _____ divisions.
What will be an ideal response?
Center drills break as a result of:
A) Too heavy feed and too low speed B) Dropping them on the floor C) Too light feed and too high speed D) Allowing chips to form a tangle around them
Serial data is sent along a single conductor, one bit at a time
Indicate whether the statement is true or false
Because all the bit positions in the preceeding problem contain 1s, the simplest approach to completing the conversion for the above problem would be to:
A) determine the weight of the MSB and add 1 to that value. B) determine the number of bits, raise 2 to that value and then subtract 1. C) determine the weight of each of the bit positions and sum the results. D) simply determine the weight of the MSB.