MET230: Hydraulics and Pneumatics Final Exam

MET230: Hydraulics and Pneumatics
Final Exam

PART1. (Closed everything)
Question 1
Which of the following is a component of a pneumatic system?
a. A compressor
b. An electric motor
c. An actuator
d. A valve
e. All of the above
Explanation: consider the below diagram of a pneumatic system
Question 2
Which of the following symbols represent a pilot check valve?

A.
B.
C.
D.
E. None of the above
Solution
Symbol B,
Question 3

Which of the following is the purpose of a regenerative circuit?
A. To slow down the extending speed of a double-acting cylinder
B. To regulate the bulk modulus of the working fluid
C. To speed up the retracting velocity of a double-acting cylinder
D. To speed up the extending velocity of a single-acting cylinder
E. None of the above
Explanation
A regenerative circuit purposely is meant to save time as well as the energy by means of
increasing the extension speed of double acting cylinder.
Question 4
Which of the following is true about components of a pneumatic system such as valves, pipes,
and compressors?
A. Undersized components such as pipes and valves does not influence pressure losses
B. Oversized components such as pipes and valves result in excessive initial installation
costs
C. Air pressure loses in pipes does not influence the compressor required output pressure
nor the input power.
D. Air leaks in pipe does not influence the flow rate required from the compressor
E. None of the above
Question 5
Conductors and fittings should not be made out of copper for what of the following reason:
A. Copper is expensive
B. Copper is a poor conductor of heat