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1. Check valves are classified
as:
A. Pressure control valves
B. Flow control valves
C. Directional control
valves
D. Bypass valves
2. What characteristics does
the valve below have?
A. Two position, four-way,
hydraulically actuated
B. Three position,
two-way, lever actuated
C. Three position, five-way,
lever actuated
D. Four position,
three-way, double spring
return
3. __________ cylinders are
suitable for systems re-
quiring high _________,
while _________ cylinders
are suitable for systems
requiring high ___________.
A. Pneumatic, force, hy-
draulic, operating speed
B. Pneumatic, operating
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speed, hydraulic, force
C. Hydraulic, cleanliness,
pneumatic, force
D. Hydraulic, operating
speed, pneumatic, cleanli-
ness
4. In a multi-stage compres-
sor the cylinders of the
third stage are:
A. Larger than the cylin-
ders in the first stage
B. Equal in size to the cylin-
ders in the first stage
C. Smaller than the cylin-
ders in the first stage
D. Depends on the medi-
um gas
5. When is it recommended
to use a two-stage pres-
sure regulator instead of a
one-stage regulator?
A. When an operator can
monitor the system
B. When constant outlet
pressure is required
C. When variations of out-
let pressure are required
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D. When the working pres-
sure is very low
6. Screw pump, gear pump
and moving vane pump
are all types of:
A. Submersible pumps
B. Reciprocating pumps
C. Centrifugal pumps
D. Rotary pumps
7. The correct order of instal-
lation in a pneumatic sys-
tem will be:
A. Lubricator - Regulator -
Filter
B. Regulator - Filter - Lubri-
cator
C. Filter - Lubricator - Reg-
ulator
D. Filter - Regulator - Lubri-
cator
8. In order to prevent resid-
ual stress in welded met-
als it is recommended to:
A. Cool the metals quickly
B. Make a PWHT (Post
Weld Heat Treatment)
C. Hold the welded metals