Set screws are used ____.
A. to help prevent rotary motion
B. to transmit power between two parts such as a pulley and a shaft
C. to reduce high stress which occurs in one direction along a thread axis
D. both a and b
E. all of the above
Answer: D
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When plant tissue turns black and dies, what symptom is expressed?
a. necrosis c. blight b. chlorosis d. None of these asnwers is correct
Which EVAP valve is subject to rust and corrosion more than all of the others?
A) Vent valve B) Purge valve C) Roll over check valve D) Vacuum control valve
If the compressor will not operate in the cooling mode, the best thing to do is _____
a. immediately replace the compressor b. make sure the compressor is getting voltage c. see if the compressor runs in other modes d. check the refrigerant charge
As the load on an evaporator increases, the automatic expansion valve will open to allow more refrigerant to enter the evaporator.
Answer the following statement true (T) or false (F)