A three-input NOR gate will have a HIGH output whenever
A) one input is HIGH. B) three inputs are HIGH.
C) two inputs are LOW. D) three inputs are LOW.
D
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Five-hundred moles per minute of liquid benzene (300 K and 3.0 bar) enters a steady state heater. The benzene leaves the heater as a superheated vapor (450 K and 3.0 bar). What rate of heat addition is needed to achieve this change? Assume the heat of vaporization is not a function of pressure. Note: The vapor pressure of benzene is given by the following relationship:
lnPsat = 13.8594 – 2773.78/(T-53) where P [=] kPa and T [=] K
Which temperature is warmer: -2°F or 3°F?
A) -2°F B) 3°F
A circle in an isometric sketch will appear as an ellipse.
Answer the following statement true (T) or false (F)
When only a part of a surface is to be designated as a datum, a ____ line drawn parallel to the surface is used to indicate the portion of the surface acting as the datum.
A. center B. chain C. visible D. cutting-plane