How many wires are used with a potentiometer-type sensor?
A) Two B) Four C) Three D) One
C
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Oxides of nitrogen (NOx) are caused by:
A. High cylinder temperature B. A rich air/fuel mixture C. Ignition misfires D. Low cylinder temperature
Fill is placed and compacted in multiple layers called _____.
a. strata b. flights c. panels d. lifts
Mallards leave nesting sites in late summer before the weather turns cold
a. True b. False Indicate whether the statement is true or false
Air with density of 0.45 kg/m^3 enters an experimental jet engine at rate of 180 m/s. The inlet area of the engine is 5.0 ft2. After fuel is burned, the air and combustion byproducts leave the engine with a velocity of 650 m/s through and outlet area of 4.0 ft2. What is the average density of the gas exiting the engine? Express your answer in kg/m^3, slugs/ft^3, and lbm/ft^3.
