Millwright - 3rd Year - Compressor
Fundamentals Compressor Fundamentals
Part A& B Exam Questions and Answers with
Verified Solutions | Latest Updated 2026
1. True or false. The two main 1. True
classifications of compressors are
dynamic and positive
displacement.
2. True or false. Double-acting 2. True
compressors compress the gas on
both sides of the piston.
3. List the two reciprocating 3. Labyrinth and diaphragm.
compressors that are particularly
suited to oil-free air delivery.
4. True or false. A rotary screw 4. False
compressor is considered to
belong
to the centrifugal compressor
category.
, 5. True or false. A centrifugal flow 5. False
compressor uses alternating rows
of
rotor and stator blades to move
the
gas axially through the
compressor.
6. True or false. Zero degrees 6. True
Kelvin
is equal to -273 degrees Celsius.
7. Atmospheric pressure at sea 7. a) 1 bar b) 14.7 psi c) 101.3 kPa
level
is equal to how many of each of
the
following: a) bar b) psi c) kPa
8. True or false. Gauge pressure is 8. False
calculated by adding 14.7 to an
absolute scale reading.
9. Compressed air operates in 9. Gases are compressible. Gases expand
much to fill any
the same manner as oil in a container.
hydraulic
system except for two major
differences. What are these two
differences?
Fundamentals Compressor Fundamentals
Part A& B Exam Questions and Answers with
Verified Solutions | Latest Updated 2026
1. True or false. The two main 1. True
classifications of compressors are
dynamic and positive
displacement.
2. True or false. Double-acting 2. True
compressors compress the gas on
both sides of the piston.
3. List the two reciprocating 3. Labyrinth and diaphragm.
compressors that are particularly
suited to oil-free air delivery.
4. True or false. A rotary screw 4. False
compressor is considered to
belong
to the centrifugal compressor
category.
, 5. True or false. A centrifugal flow 5. False
compressor uses alternating rows
of
rotor and stator blades to move
the
gas axially through the
compressor.
6. True or false. Zero degrees 6. True
Kelvin
is equal to -273 degrees Celsius.
7. Atmospheric pressure at sea 7. a) 1 bar b) 14.7 psi c) 101.3 kPa
level
is equal to how many of each of
the
following: a) bar b) psi c) kPa
8. True or false. Gauge pressure is 8. False
calculated by adding 14.7 to an
absolute scale reading.
9. Compressed air operates in 9. Gases are compressible. Gases expand
much to fill any
the same manner as oil in a container.
hydraulic
system except for two major
differences. What are these two
differences?
