MWS CORE EXAMS ALL QUESTIONS AND
ANSWERS SET A+
✔✔It's important to monitor the water level in the onboard tank because - ✔✔You need
to know if the incident requires additional water before the tank is empty.
✔✔A hose has a flat rate of 500 gallons per minute with a friction loss of four psi. If the
flow rate increases to 1000 gallons per minute, then the friction loss will increase to: -
✔✔16 PSI.
✔✔As hose diameter increases: - ✔✔Friction loss decreases.
✔✔During a resupply operation which formula is used to determine the pump discharge
pressure (PDP)? - ✔✔PDP = required intake pressure + TPL.
✔✔The correct equation for determining elevation pressure loss or gain is: - ✔✔EP =
0.5 x H
✔✔"Q" in the formula FL = C Qs L represents: - ✔✔Flow rate.
✔✔To calculate the appliance pressure loss: - ✔✔Add 10 psi for each appliance.
✔✔The condensed "Q" formula for a 4-inch hose line is: - ✔✔FL = Q.
✔✔The hand method provides a fair estimate of: - ✔✔Hose friction loss.
✔✔Given the flow and GPM, hose length, and hose diameter, you can use a pump
chart to determine the: - ✔✔Total pressure loss TPL
✔✔A major advantage of large diameter hose is their: - ✔✔Use a supply lines.
, ✔✔A major advantage of medium diameter hose is their: - ✔✔Flexibility for use as an
attack, relay or supply line
✔✔One advantage that electronic governors have over mechanical governors is that
electronic governors can: - ✔✔Maintain pressure in all other discharge lines if only one
line trips the governor.
✔✔The efficiency of many priming devices is improved through the use of: - ✔✔And oil-
injection system.
✔✔On large diameter lines, gate valves are most often controlled by: - ✔✔Handwheels.
✔✔The big advantage of centrifugal pumps over positive displacement pumps is that
centrifugal pumps: - ✔✔Can provide water in variable pressures and volumes.
✔✔One recommended strategy for cooling and overheating fire pump is to: -
✔✔Circulate water back to the tank.
✔✔When performing a stationary operation with a PTO-driven fire pump, after you have
started to operate the PTO control and placed the transmission in the recommended
gear, the speedometer should read: - ✔✔Slightly above zero.
✔✔The first step in a pump and roll operation with a PTO-driven fire pump is to: -
✔✔Come to a complete stop and set the parking break.
✔✔Place the steps for pumping from a hydrant in the correct order: - ✔✔Engage the
pump and make the connections to the hydrant.
Open the intake valve increase the engine RPM.
Open the discharge valve slowly.
Set the throttle.
Set the pressure relief valve or the governor.
Monitor gauges associated with the pump operation and make decisions based on your
departments SOP's and experience.
✔✔Identify two correct statements about hydrants. - ✔✔Grid systems with large supply
mains and looping secondary mains generally have less friction loss and deterioration.
If hydrants or color-coated, select a light blue hydrant when responding to a large
incident and be sure to test the flow before connecting the hydrant to the fire pump.
ANSWERS SET A+
✔✔It's important to monitor the water level in the onboard tank because - ✔✔You need
to know if the incident requires additional water before the tank is empty.
✔✔A hose has a flat rate of 500 gallons per minute with a friction loss of four psi. If the
flow rate increases to 1000 gallons per minute, then the friction loss will increase to: -
✔✔16 PSI.
✔✔As hose diameter increases: - ✔✔Friction loss decreases.
✔✔During a resupply operation which formula is used to determine the pump discharge
pressure (PDP)? - ✔✔PDP = required intake pressure + TPL.
✔✔The correct equation for determining elevation pressure loss or gain is: - ✔✔EP =
0.5 x H
✔✔"Q" in the formula FL = C Qs L represents: - ✔✔Flow rate.
✔✔To calculate the appliance pressure loss: - ✔✔Add 10 psi for each appliance.
✔✔The condensed "Q" formula for a 4-inch hose line is: - ✔✔FL = Q.
✔✔The hand method provides a fair estimate of: - ✔✔Hose friction loss.
✔✔Given the flow and GPM, hose length, and hose diameter, you can use a pump
chart to determine the: - ✔✔Total pressure loss TPL
✔✔A major advantage of large diameter hose is their: - ✔✔Use a supply lines.
, ✔✔A major advantage of medium diameter hose is their: - ✔✔Flexibility for use as an
attack, relay or supply line
✔✔One advantage that electronic governors have over mechanical governors is that
electronic governors can: - ✔✔Maintain pressure in all other discharge lines if only one
line trips the governor.
✔✔The efficiency of many priming devices is improved through the use of: - ✔✔And oil-
injection system.
✔✔On large diameter lines, gate valves are most often controlled by: - ✔✔Handwheels.
✔✔The big advantage of centrifugal pumps over positive displacement pumps is that
centrifugal pumps: - ✔✔Can provide water in variable pressures and volumes.
✔✔One recommended strategy for cooling and overheating fire pump is to: -
✔✔Circulate water back to the tank.
✔✔When performing a stationary operation with a PTO-driven fire pump, after you have
started to operate the PTO control and placed the transmission in the recommended
gear, the speedometer should read: - ✔✔Slightly above zero.
✔✔The first step in a pump and roll operation with a PTO-driven fire pump is to: -
✔✔Come to a complete stop and set the parking break.
✔✔Place the steps for pumping from a hydrant in the correct order: - ✔✔Engage the
pump and make the connections to the hydrant.
Open the intake valve increase the engine RPM.
Open the discharge valve slowly.
Set the throttle.
Set the pressure relief valve or the governor.
Monitor gauges associated with the pump operation and make decisions based on your
departments SOP's and experience.
✔✔Identify two correct statements about hydrants. - ✔✔Grid systems with large supply
mains and looping secondary mains generally have less friction loss and deterioration.
If hydrants or color-coated, select a light blue hydrant when responding to a large
incident and be sure to test the flow before connecting the hydrant to the fire pump.
