________ are available for integration in communicating control systems
A) Air cleaners, dishwashers, and refrigerators
B) Zoning boards, humidifiers, and air cleaners
C) Blowers, kitchen appliances, and entertainment systems
D) Humidifiers, video games, and audio systems
B
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Dimensions that may be added to the edge weld symbol are size, length, and spacing (pitch of intermittent welds).
Answer the following statement true (T) or false (F)
In an AC generator, the field windings are energized by the _____.
a. rotor b. stator c. armature d. exciter
A heat exchanger, operating at steady state, is used to heat an ideal gas. The ideal gas has a constant CP*=5R, molecular weight of 100 g/mol, flowrate of 1000 mol/min, enters at T=100 °C and P=1.1 bar, and leaves at T=190 °C and P=1 bar.
The heat is provided by steam that enters the heat exchanger’s shell side as 50 kg/min of saturated steam at 200 °C. Steam temperature and pressure remain constant in the shell side but a small portion of the steam condenses as heat is transferred to the ideal gas. There are no moving parts in either side of the heat exchanger. A) Determine the quality (vapor fraction) of the exiting liquid-vapor water mixture. B) Determine the rate at which entropy is generated in this heat exchanger. (If you have no answer to part A, assume the quality is 0.97).
____________________ is the attacking of birds by other birds in the flock.
Fill in the blank(s) with the appropriate word(s).