1 of 38
Term
Actuating or secondary controls are used to:
A)
Regulate the refrigeration system output when the system limits are
exceeded
B)
Regulate the refrigeration system output when the system limits are
reached
C)
Protect the system from operation beyond set limits
D)
Indirectly control changes in operation
,E)
Control the operation of cooling water
Give this one a try later!
is usually the result of a level control Opens when gas pressure is too
malfunction high
Indirectly control changes in
It decreases condenser capacity
operation
Don't know?
2 of 38
Term
With counter flow arrangement of air and water in a heating coil:
A)
The water return connection is on the same side as the leaving air
B)
The water supply connection is on the same side as the entering air
C)
The heat transfer efficiency is the same as with parallel arrangement
of air and water
D)
It decreases the heat transfer efficiency
,E)
The water supply connection is on the same side as the leaving air
Give this one a try later!
Have the greatest freezing Refrigerant vapour in the purger is
problems at temperatures of about always expelled with the non-
�2�C to �1�C condensable gases
The water supply connection
Two separate pre-heater coils
is on the same side as the
should be installed
leaving air
Don't know?
3 of 38
Term
Control of the static pressure and horsepower requirements at a
given speed is obtained by using:
A)
Outlet damper control
B)
Direct drives
C)
Fluid drives
, D)
Variable frequency drives
E)
Belt guards
Give this one a try later!
Variable frequency drives activated alumina chemisorbant
Zeolite softeners High-pressure steam boilers
Don't know?
4 of 38
Term
Leak detectors require testing at least
A)
Bi-annually
B)
Weekly
C)
Daily
D)
Term
Actuating or secondary controls are used to:
A)
Regulate the refrigeration system output when the system limits are
exceeded
B)
Regulate the refrigeration system output when the system limits are
reached
C)
Protect the system from operation beyond set limits
D)
Indirectly control changes in operation
,E)
Control the operation of cooling water
Give this one a try later!
is usually the result of a level control Opens when gas pressure is too
malfunction high
Indirectly control changes in
It decreases condenser capacity
operation
Don't know?
2 of 38
Term
With counter flow arrangement of air and water in a heating coil:
A)
The water return connection is on the same side as the leaving air
B)
The water supply connection is on the same side as the entering air
C)
The heat transfer efficiency is the same as with parallel arrangement
of air and water
D)
It decreases the heat transfer efficiency
,E)
The water supply connection is on the same side as the leaving air
Give this one a try later!
Have the greatest freezing Refrigerant vapour in the purger is
problems at temperatures of about always expelled with the non-
�2�C to �1�C condensable gases
The water supply connection
Two separate pre-heater coils
is on the same side as the
should be installed
leaving air
Don't know?
3 of 38
Term
Control of the static pressure and horsepower requirements at a
given speed is obtained by using:
A)
Outlet damper control
B)
Direct drives
C)
Fluid drives
, D)
Variable frequency drives
E)
Belt guards
Give this one a try later!
Variable frequency drives activated alumina chemisorbant
Zeolite softeners High-pressure steam boilers
Don't know?
4 of 38
Term
Leak detectors require testing at least
A)
Bi-annually
B)
Weekly
C)
Daily
D)
