The lower heating value (LHV) of a fuel is which of the following?
A) Heat from adiabatic combustion initially at 25°C and cooling combustion products to 25°C.
B) Heat from combustion initially at 100°C with 10% excess air and cooling the flue gas to 100°C.
C) Heat by stoichiometric combustion initially at 25°C and cooling combustion products to 150°C.
C) Heat by stoichiometric combustion initially at 25°C and cooling combustion products to 150°C.
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Australian Koala bears are thought to have a mean height of 21 in. and a standard deviation of 3 in. You plan to choose a sample of 55 bears at random. What is the probability of a sample mean between 20 and 22? How many bears in the sample are likely to be taller than 25 in.?
What will be an ideal response?
What color is printed on the labels of standard interrupting capacity circuit breakers?
a. White b. Black c. Red d. Blue
Preheat is used to slow the cooling time of the weldment
Indicate whether the statement is true or false
The two general types of pipe threads, approved as American National Standard, is taper pipe threads and straight pipe threads
Indicate whether the statement is true or false