Technician A says that spur gears are quieter than helical gears. Technician B says that helical gears produce greater thrust forces than spur gears. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both technicians
D) Neither technician
B) Technician B only
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What is the difference between a load and a control?
A) Controls use power. Loads either let power pass or they do not let it pass. B) Loads are the power, as in L1 and L2. Controls use the power. C) Loads use power. Controls either let power pass or they do not let it pass. D) There is no difference. They are two words for the same thing.
Offset and removed sections receive their name from the method in which it is obtained or shown.
Answer the following statement true (T) or false (F)
To what code should backwater valves conform?
What will be an ideal response?
If pulsed DC current is not present in the flame rod, what is the effect on the gas valve in a direct spark-ignition system?
A) The system will shut down. B) The valve will open. C) Pulsed DC current has no effect on the gas valve. D) The valve will remain closed.