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In high-pressure ratio and high differential pressure compression applications, which valve type is most commonly used?

A - Plate or disc type B - Strip type C - Poppet type D - None of the above Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 2:

The pressure rating of a compressor cylinder is determined by the:

A - Type of cooling system used B - Wall thickness and material of the inner bore C - Number of integral cast fins which provide increased radiating area D - Distance from the outer head to the crankcase Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 3:

In a double-acting compressor, the purpose of the crosshead is to:

A - Attach the crankshaft to the connecting rod B - Attach the piston directly to the crankshaft C - Join the connecting rod to the piston rod D - Direct the flow of gas across the head of the compressor Correctness Rule: Single Correct Answer Required Answer(s) Given: C Correct Answer(s): C Marked as: Correct _______________________________________________

Question 4:

The reciprocating compressor running gear component that is supported by the main bearings is called the:

A - Crosshead B - Frame C - Crankshaft D - Cylinder Correctness Rule: Single Correct Answer Required Answer(s) Given: C Correct Answer(s): C Marked as: Correct _______________________________________________

Question 5:

In the two-stage compressor shown here, on the down stroke of the left piston, the _____________closes, and the pressure above the piston and the suction valve discs drops below the suction (crankcase) pressure, causing the _______________ to lift open and allows vapour to pass into the cylinder above the piston.

A - discharge valve; suction valves B - suction port; discharge valve C - right cylinder; suction valves D - intake valve; left cylinder Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 6:

The disc valve basic part labeled "A" in the diagram is called the:

A - Upper valve body B - Valve seat C - Lower valve body D - Stop plate Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 7:

The disc valve basic part labeled "B" in the diagram is called the:

A - Valve disc B - Valve spring C - Valve channels D - Poppets Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 8:

The number of rings that are fitted to the piston of a compressor is determined by the:

A - Barometric pressure that is developed across the piston B - Cylinder length C - Piston diameter D - Pressure differential that is developed across the piston Correctness Rule: Single Correct Answer Required Answer(s) Given: D Correct Answer(s): D Marked as: Correct _______________________________________________

Question 9:

The frame of a reciprocating compressor is almost invariably made of:

A - Stainless steel B - Cast iron C - Wrought iron D - Concrete Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 10:

The reciprocating compressor running gear component that has a threaded hole in one end into which the piston rod fits is called the:

A - Connection rod B - Cylinder C - Crankshaft D - Crosshead Correctness Rule: Single Correct Answer Required Answer(s) Given: D Correct Answer(s): D Marked as: Correct

Question 1:

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