Compressor cylinder unloading reduces the capacity of a reciprocating compressor by:
A) Disconnecting the pistons in the unloaded cylinders.
B) Making the valves in the head inoperative.
C) Blocking off the discharge port in the unloaded heads.
D) Flooding the unloaded cylinders with oil.
B
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A PV array sits on 36 concrete ?bases that are 9 in. square and 30 in. deep. How much concrete is needed to make these bases? (Round to 2 decimal places if necessary).
Fill in the blank(s) with the appropriate word(s).
With regard to motor carrier regulations, which of the following is a true statement?
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While discussing steering wheel removal:
Technician A says a steering wheel should be marked in relation to the steering shaft. Technician B says the steering wheel should be grasped firmly with both hands and pulled from the shaft.
In a series circuit, all of the resistances are ____ and then substituted in Ohm's law together to equal total resistance (R).
A. added together B. multiplied together C. subtracted from one D. divided by the largest resistance