Chapter 12 - Relay Pumping Operations test
and quiz UPDATED ACTUAL Exam
Questions and CORRECT Answers
When shutting down the relay, beginning with the attack pumper and coordinating with other
pumpers in the relay, each driver/operator should:
Select one:
a. slowly increase the throttle and close the dump line valve.
b. slowly increase the throttle and open the dump line valve.
c. slowly decrease the throttle and close the dump line valve.
d. slowly decrease the throttle and open the dump line valve.
See page 434 - CORRECT ANSWER - d. slowly decrease the throttle and open the dump line
valve.
When pumpers in the relay operation increase their pump discharge pressure,:
Select one:
a. volume will always be increased.
b. personnel may be unable to keep up with volume.
c. increased stress on the pump may cause volume to decrease.
d. a point will be reached where increased pressure will not increase volume.
See page 428 - CORRECT ANSWER - d. a point will be reached where increased pressure
will not increase volume.
What should be done to prevent water hammer?
Select one:
a. Close all valves slowly.
b. Close all valves quickly.
, c. Avoid closing valves during operations.
d. Close valves half-way, wait, then close fully.
See page 434 - CORRECT ANSWER - a. Close all valves slowly.
When medium diameter hose (MDH) is used in relay operations, generally:
Select one:
a. multiple hoselines are laid.
b. it is supplemented with small diameter hose (SDH).
c. it must be supplemented with large diameter hose (LDH).
d. the MDH will still require only one supply line to meet fireground requirements.
See page 435 - CORRECT ANSWER - a. multiple hoselines are laid.
Pressure relief valves reduce the possibility of damage to the pump and other water supply
components that may be caused by water hammer when valves are operated too quickly or:
Select one:
a. water supply fluctuates.
b. valves are operated too slowly.
c. intake pressures rise dramatically.
d. intake pressures decrease dramatically.
See page 435 - CORRECT ANSWER - c. intake pressures rise dramatically.
The distance of the relay is an important operational consideration because the longer the hose
lay, the:
Select one:
a. more friction loss will be encountered.
b. larger the maximum lift will be achieved.
and quiz UPDATED ACTUAL Exam
Questions and CORRECT Answers
When shutting down the relay, beginning with the attack pumper and coordinating with other
pumpers in the relay, each driver/operator should:
Select one:
a. slowly increase the throttle and close the dump line valve.
b. slowly increase the throttle and open the dump line valve.
c. slowly decrease the throttle and close the dump line valve.
d. slowly decrease the throttle and open the dump line valve.
See page 434 - CORRECT ANSWER - d. slowly decrease the throttle and open the dump line
valve.
When pumpers in the relay operation increase their pump discharge pressure,:
Select one:
a. volume will always be increased.
b. personnel may be unable to keep up with volume.
c. increased stress on the pump may cause volume to decrease.
d. a point will be reached where increased pressure will not increase volume.
See page 428 - CORRECT ANSWER - d. a point will be reached where increased pressure
will not increase volume.
What should be done to prevent water hammer?
Select one:
a. Close all valves slowly.
b. Close all valves quickly.
, c. Avoid closing valves during operations.
d. Close valves half-way, wait, then close fully.
See page 434 - CORRECT ANSWER - a. Close all valves slowly.
When medium diameter hose (MDH) is used in relay operations, generally:
Select one:
a. multiple hoselines are laid.
b. it is supplemented with small diameter hose (SDH).
c. it must be supplemented with large diameter hose (LDH).
d. the MDH will still require only one supply line to meet fireground requirements.
See page 435 - CORRECT ANSWER - a. multiple hoselines are laid.
Pressure relief valves reduce the possibility of damage to the pump and other water supply
components that may be caused by water hammer when valves are operated too quickly or:
Select one:
a. water supply fluctuates.
b. valves are operated too slowly.
c. intake pressures rise dramatically.
d. intake pressures decrease dramatically.
See page 435 - CORRECT ANSWER - c. intake pressures rise dramatically.
The distance of the relay is an important operational consideration because the longer the hose
lay, the:
Select one:
a. more friction loss will be encountered.
b. larger the maximum lift will be achieved.
