What device may be used to ensure that air is flowing through a duct before an electric strip heater is energized?
What will be an ideal response?
A sail switch may be used.
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The ____ operator of the test command, combines two expressions and tests a logical OR relationship between them.
A. | B. || C. -O D. -o
When does the comprehensive component monitor run?
What will be an ideal response?
A distribution sometimes used to model the largest item in a sample is the extreme value distribution. This distribution has cumulative distribution function
Let Xbe a random variable with this distribution.
a. Find P(X ? 0).
b. Find P(X> ln 2).
c. Find the median of X.
What is the purpose of the limit switch?
A) It improves efficiency by limiting furnace run time. B) It limits the indoor blower fan speed to supply a regulated supply of warm air. C) It prevents overheating by interrupting the circuit to the gas valve. D) It improves efficiency by limiting the supply air temperature.