3B2 C8-11 Practice Questions With Complete Solutions
There are three types of controls for compressor, those are start-
stop control, ------------- speed control, and constant speed
control.
variable
If there is a shut off valve between a compressor's aftercooler
and its receiver then there must be a ---------- installed at the
aftercooler.
safety valve
A compressor with _____ is known as an angle compressor.
a. A V type cylinder arrangement
b. Horizontal cylinder arrangement
c. One cylinder on the horizontal axis and the other on the
vertical axis
d. A Y type cylinder arrangement
e. 45 type cylinder arrangement
c. One cylinder on the horizontal axis and the other on the
vertical axis
The compressor air receiver is installed in a convenience
location in the mechanical room.
a. True
b. False
b. False
,Water cooling by water jacketing of air compressor cylinders is
preferred over air cooling because:
a. More efficient cooling is obtained
b. There is less piping involved
c. The construction of the compressor is cheaper than the finned
type
d. The air temperature can not be controlled
e. The construction is fairly simple
a. More efficient cooling is obtained
The impellers of a --------------- compressor maintain their
relative positions with each other by the use of timing gears
a. angle types
b. free piston
c. axial flow
d. lobe type rotary
e. siding vane
d. lobe type rotary
In a rotary screw compressor, normally the ---------- rotor is
driven.
convex
In the plate disc type valves of compressor when the pressure on
the discharge side of the discs becomes higher than the inlet, the
--------- force the valve close.
spring
, A compressor at higher altitude require a higher compression
ratio.
a. True
b. False
a. True
By compressing air in one stage compressor, its relative
humidity is also increases.
a. True
b. False
b. False
There are three input signals to the surge controller of an air
compressor. Those are inlet ----------, the suction pressure, and
the
discharge pressures.
air flow
By sending the compressed air through the desiccant bed we
bring its ---------- lower.
dew point
A typical air dryer type consists of a pressure vessel containing a
chemical known as a ---------------
a. desiccant
b. dryer
c. moisture eliminator
d. silica
e. drying agent
There are three types of controls for compressor, those are start-
stop control, ------------- speed control, and constant speed
control.
variable
If there is a shut off valve between a compressor's aftercooler
and its receiver then there must be a ---------- installed at the
aftercooler.
safety valve
A compressor with _____ is known as an angle compressor.
a. A V type cylinder arrangement
b. Horizontal cylinder arrangement
c. One cylinder on the horizontal axis and the other on the
vertical axis
d. A Y type cylinder arrangement
e. 45 type cylinder arrangement
c. One cylinder on the horizontal axis and the other on the
vertical axis
The compressor air receiver is installed in a convenience
location in the mechanical room.
a. True
b. False
b. False
,Water cooling by water jacketing of air compressor cylinders is
preferred over air cooling because:
a. More efficient cooling is obtained
b. There is less piping involved
c. The construction of the compressor is cheaper than the finned
type
d. The air temperature can not be controlled
e. The construction is fairly simple
a. More efficient cooling is obtained
The impellers of a --------------- compressor maintain their
relative positions with each other by the use of timing gears
a. angle types
b. free piston
c. axial flow
d. lobe type rotary
e. siding vane
d. lobe type rotary
In a rotary screw compressor, normally the ---------- rotor is
driven.
convex
In the plate disc type valves of compressor when the pressure on
the discharge side of the discs becomes higher than the inlet, the
--------- force the valve close.
spring
, A compressor at higher altitude require a higher compression
ratio.
a. True
b. False
a. True
By compressing air in one stage compressor, its relative
humidity is also increases.
a. True
b. False
b. False
There are three input signals to the surge controller of an air
compressor. Those are inlet ----------, the suction pressure, and
the
discharge pressures.
air flow
By sending the compressed air through the desiccant bed we
bring its ---------- lower.
dew point
A typical air dryer type consists of a pressure vessel containing a
chemical known as a ---------------
a. desiccant
b. dryer
c. moisture eliminator
d. silica
e. drying agent
