The pitch circle of a gear is 4.7 inches in diameter, and it has 12 teeth. What is the distance between teeth measured on the circumference of the pitch circle? Round to the nearest hundredth inch.
A. 1.14
B. 1.20
C. 1.23
D. 1.29
Answer: C
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a. plain bearings b. rolling element bearings c. thrust bearings d. radial bearings
Please refer to question 10 above. A major fire and/or heavy water damage may, if adequate insurance is not in force, be an example of the risk level cited in answer 10A
A. True B. False
How does the reversing valve switch a heat pump between heating and cooling modes?
a. It reverses refrigerant flow through the compressor. b. It causes both check valves to allow refrigerant flow to the indoor coil. c. It causes both metering devices to meter refrigerant. d. It reverses refrigerant flow through the indoor and outdoor coils.
9. A very common method of detecting motor speed is with the use of a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).