Pump Operator UPDATED ACTUAL Exam
Questions and CORRECT Answers
Improper use or poor maintenance can result in what 3 things? - CORRECT ANSWER - 1.
Unneccessary property damage
2. Injury damage to equipment itself
3. Needless loss of life
What is the presently used fire engine pump in the NHFD? - CORRECT ANSWER -
Centrifugal pump
What principle does the centrifugal force operate on? - CORRECT ANSWER - Centrifugal
force
What are the 2 main parts of a centrifugal pump? - CORRECT ANSWER - 1. Impellers
2. Volutes
What part of the centrifugal pump rotate very rapidly with the volute and creates centrifugal
force which hurts the water from the center outward? - CORRECT ANSWER - Impellers
What part of the centrifugal pump is a spiral shaped section of the body enclosing each impeller
which then carries water from the impeller which then carries water from the impeller to the
discharge? - CORRECT ANSWER - Volute
What forces water into the suction eye? - CORRECT ANSWER - Atmospheric or other
pressures
What do impellers do with the water? - CORRECT ANSWER - Forces the water outward
What does the volutes do with water? - CORRECT ANSWER - Conducts the water out
, What are 3 things that can regulate pump discharge pressure and capacity? - CORRECT
ANSWER - 1. Adjusting pump speed
2. Adjusting discharge valve openings
3. Nozzle size
What is the heart of the centrifugal pump? - CORRECT ANSWER - Impellers
What is the construction mat total of an impeller? - CORRECT ANSWER - Bronze
What is the size of the slots in the impellers? - CORRECT ANSWER - 2 inches wide and 2
inches long
What do centrifugal pumps do with hydrant pressure? - CORRECT ANSWER - It adds to the
pressure
What is the function of a positive displacement pump? - CORRECT ANSWER - It provides
all the pressure
What does a centrifugal pump need to exceed its rated capacity - CORRECT ANSWER -A
good hydrant
When a centrifugal pump has a capacity of 150 lbs net pressure when connected to a hydrant of
50 lbs how much can the pump deliver? - CORRECT ANSWER - 200lbs
What are the 7 steps to engage the fire pump on the apparatus? - CORRECT ANSWER - 1.
Stop apparatus
2. Set parking brake
3. Reduce engine to idle speed
4. Place road transmission to neutral
Questions and CORRECT Answers
Improper use or poor maintenance can result in what 3 things? - CORRECT ANSWER - 1.
Unneccessary property damage
2. Injury damage to equipment itself
3. Needless loss of life
What is the presently used fire engine pump in the NHFD? - CORRECT ANSWER -
Centrifugal pump
What principle does the centrifugal force operate on? - CORRECT ANSWER - Centrifugal
force
What are the 2 main parts of a centrifugal pump? - CORRECT ANSWER - 1. Impellers
2. Volutes
What part of the centrifugal pump rotate very rapidly with the volute and creates centrifugal
force which hurts the water from the center outward? - CORRECT ANSWER - Impellers
What part of the centrifugal pump is a spiral shaped section of the body enclosing each impeller
which then carries water from the impeller which then carries water from the impeller to the
discharge? - CORRECT ANSWER - Volute
What forces water into the suction eye? - CORRECT ANSWER - Atmospheric or other
pressures
What do impellers do with the water? - CORRECT ANSWER - Forces the water outward
What does the volutes do with water? - CORRECT ANSWER - Conducts the water out
, What are 3 things that can regulate pump discharge pressure and capacity? - CORRECT
ANSWER - 1. Adjusting pump speed
2. Adjusting discharge valve openings
3. Nozzle size
What is the heart of the centrifugal pump? - CORRECT ANSWER - Impellers
What is the construction mat total of an impeller? - CORRECT ANSWER - Bronze
What is the size of the slots in the impellers? - CORRECT ANSWER - 2 inches wide and 2
inches long
What do centrifugal pumps do with hydrant pressure? - CORRECT ANSWER - It adds to the
pressure
What is the function of a positive displacement pump? - CORRECT ANSWER - It provides
all the pressure
What does a centrifugal pump need to exceed its rated capacity - CORRECT ANSWER -A
good hydrant
When a centrifugal pump has a capacity of 150 lbs net pressure when connected to a hydrant of
50 lbs how much can the pump deliver? - CORRECT ANSWER - 200lbs
What are the 7 steps to engage the fire pump on the apparatus? - CORRECT ANSWER - 1.
Stop apparatus
2. Set parking brake
3. Reduce engine to idle speed
4. Place road transmission to neutral
