Which of the following would represent ideal operating conditions for a pair of universal joints on a propeller shaft?
A. maximum operating angle of 3 degrees
B. minimum operating angle of 1/2 degree
C. operating angles of each U-joint should be within 1 degree
D. all of the above
Answer: D
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A Power-limited Class 1 circuit may operate at a maximum of _________.
A. 600V, 1000VA B. 30V, 1000VA C. 150V, 1000VA D. 30V, 100VA
A built-up roof membrane is generally finished with
A) a single-ply roof membrane. B) aggregate surfacing. C) a flood coat of bitumen. D) all of the above. E) B and C.
The remote condensing unit of a walk-in refrigerator and an A/C system are installed next to each other outside a building. They both use R22 and the outdoor ambient is 95°.
The walk-in unit’s condensing temperatures will be: a. About the same as the A/C unit. b. Much higher than the A/C unit. c. Much lower than the A/C unit.
If a person is performing a voltage test on a 240 volt panelboard, he/she is required to wear FR clothing with a minimum arc rating of _______________________.
What will be an ideal response?