Define the term “mean.”
What will be an ideal response?
The arithmetic mean is the sum of the measures in the set divided by the number of measures in the set
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Saturated liquid water at 200 kPa enters an insulated mixing chamber at a rate of 15 kg/s. The water is mixed with superheated steam at 200 kPa and 125oC. The combined flow will exit as a saturated mixture at 200 kPa. Using your mixing chamber model to calculate the data, plot the quality of the combined exit flow for superheated steam entrance flow rates ranging from 5 kg/s to 200 kg/s.
State 1: Liquid inlet; State 2: Steam inlet; State 3: Outlet Given: P1 = P2 = P3 = 200 kPa; x1 = 0.0; T2 = 125oC; x3 = 1.0; m?1= 15 kg/s Assume: Q?=0 (insulated). Given no other information regarding the mixing chamber, make the following common assumptions: W?=?KE=?PE=0 Also, assume the mixing chamber is a multiple-inlet, single-outlet, steady-state, steady-flow device.
?The air that circulates through a welding machine should be free of _______?
A. ?dust. B. ?oil. C. ?metal filings. D. ?All of the above
Large vehicles typically use ______ rotors.
A. solid B. vented C. two-piece D. all answers are correct
Cracks that occur in the heat-affected zone (HAZ) at the grain boundaries are called _____
a. magnesium cracks b. liquation cracks c. ductile cracks d. solidification cracks