The preferred method of cutting copper tubing for a refrigeration system is with:
A) A tubing cutter. B) A cutting torch. C) A circular saw. D) A hacksaw.
A
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Which of the following can be thought of as an AC switch?
a. Diac b. LED c. Triac d. SCR
If the in-phase current in the accompanying figure is 3A, calculate the apparent power.
Estimate the coefficient of performance 
for a 4.0 MW-110 wind turbine generator. Turbine information: Rotor diameter (D) = 110 m, rated name plate capacity 4.0 MW, rated wind speed = 14 m/s. Use standard atmospheric conditions (sea level and 15° C) for your calculations.
What will be an ideal response?
Use the following diagram of an oblique triangle with sides a,b,c with opposite angles A,B, and C for problems 7 through 10.
In the oblique triangle above, if the length of a is 15.25 inches, the measure of angle B is 35°, and the measure of angle A is 25°, what is the length of b to the nearest hundredth inch?
What will be an ideal response?