In a compressor that uses the balanced/opposed cylinder configuration, the cranks are arranged so that:

A - Opposite pistons are always moving in the same direction B - Opposite pistons are always moving in opposite directions C - No piston movement is required D - All pistons are always moving in the same direction Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 9:

A gas compressor that gives two compression strokes for every crank shaft revolution is the:

A - Dynamic compressor B - Single acting compressor C - Multicrank two cylinder configuration D - Single cylinder, double-acting compressor Correctness Rule: Single Correct Answer Required Answer(s) Given: D Correct Answer(s): D Marked as: Correct _______________________________________________

Question 10:

A major disadvantage of reciprocating compressors, compared to other designs is that they:

A - Are very limited in possible compression ratios B - Have a relatively low efficiency C - Have many moving parts, which means relatively high maintenance costs D - Do not develop very high discharge pressures Correctness Rule: Single Correct Answer Required Answer(s) Given: C Correct Answer(s): C Marked as: Correct

CMPR 6007_Gas Compression - Compressor Components

Question 1:

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

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

Question 2:

Compressor crankshafts may be made with counterweights, which serve to:

A - Reduce the thrust load on the crankshaft bearings B - Balance the reciprocating and rotating forces C - Convert the reciprocating motion of the crankshaft to rotary motion for the pistons D - Attach the piston directly to the crankshaft Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 3:

The reciprocating compressor running gear component that attaches the piston to the crosshead is called the:

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

Question 4:

The gas compressor valve seat provides a means of:

A - Guiding the piston during the compression of the gas B - Lubricating the cylinder during the compression of the gas C - Opening the cylinder area during the compression of the gas D - Sealing the cylinder area during the compression of the gas Correctness Rule: Single Correct Answer Required Answer(s) Given: D Correct Answer(s): D Marked as: Correct _______________________________________________

Question 5: