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WorksheetsNFPA 20
Total questions: 12
Worksheet time: 24mins
This standard deals with the selection and installation of pumps supplying ________ for private fire protection
water
liquid
pressure
volume
The scope of this document______ include liquid supplies, suction, discharge and auxiliary equipment, power supplies, including power supply arrangements, electric drive and control. diesel engine drive and control, steam turbine drive and control, and acceptance tests and operation
Shall
Should
Will
Does
Who is the organization in which the term approved is associated with as per NFPA 20?
factory mutual
underwriters laboratory
authority having jurisdiction
all the above
The term “head“ is determined by what?
The pressure at a sprinkler
Pressure available at the base of a riser
Pressure exerted by an elevation difference
Boost pressure provided by the pump
This standard shall apply to what design of pumps?
centrifugal and positive displacement
end suction and vertical inline
vertical and horizontal split case
vertical turbine and water mist
When the water supply from a public source is not adequate what shall be provided
Alternative source of water
Move building to new location
Have water authority upgrade infrastructure
Fire pump
When a water tank servers both domestic and fire protection the domestic connection shall be connected_______ the level for the fire protection demand
Above
Below
Same
None of the above
Where provided, water tanks shall be installed as per NFPA _____
13
14
22
25
Centrifugal pumps shall not be used where _____ lift is required
Static
Residual
over 15 feet
none of the above
Centrifugal pumps shall be of the ________ design and the impeller________ bearings design
Overhung and between
Underhung and between
Underhung and beside
Overhung and beside
Subermergence of the second impeller from the bottom of the pump bowl assembly shall be not less than _____ feet below the pumpiong water level at 150 % rated capacity
5
10
15
7
For pumps with rated capacities of ______ gpm or greater additional submergence is required to prevent the formation of vortices and to provide required net positive suction head in order to prevent excessive cavitation
1500
2000
2500
3000
