DHT ACTUAL EXAM |250 QUESTIONS | WITH COMPLETE ANSWERS!!
An asterisk (*) following a section number in NFPA 80 indicates what?
There are explanatory comments in the annex
What is the typical anchor type used on a knocked-down drywall frame?
Compression
Steel Stud
Multipupose
Wood Stud
Compression
What is the rabbet dimension of an equal rabbeted frame for a 1-3/4-inch wood
door?
1 9/16"
1 3/16"
1 15/16"
2 1/8"
1 15/16"
What is the maximum hourly fire rating available for a flush solid core wood door?
45 min
3 hour
60 min
90 min
90 min
On a secure right hand swing opening, removable glazing bead on doors or sidelight
frames should be installed on the...
Push or Pull
,Push side of the opening
cooridor side of the opening
pull side of the opening
Pull side of the opening
Blast resistant doors ratings are measured in units of...
PSI
Grades
Levels
PSL
PSI
When using an electric strike on a fire rated openings, the strike must be...
Normally Open
Fail Secure
Fail Safe
Fail Open
Fail Secure
In order to change higher AC voltage to a lower AC voltage you must use a...
Power Supply
Rectifier
Transformer
Switch
Transformer
Rectifier
Changes alternating current(AC) to direct current (DC)
,Switch
A device for making, breaking, or changing the connections in an electrical circuit.
Voltage drop is affected by the length and gauge of conductors used in a system.
True
False
True
What is the proper term for an 8" high protection plate that is mounted on the pull
side of a door?
Kick Plate
Armor Plate
Mop Plate
Stretcher Plate
Mop Plate
What is the appropriate lip length of an ANSI curved-lip strike plate on a 3'-0" x 7'-0"
x 1-3/4" HMD x HMF x 5-3/4" Jamb Depth x 2" Face?
1"
1 1/8"
1 1/4"
1 1/2"
1 1/4"
Which special purpose hinge moves the door out from the opening when opened to
90-degrees?
, Swing Clear Hinge
Wide Throw Hinge
Anchor Hinge
Raised Barrel Hinge
Swing Clear Hinge
Wide Throw Hinge
are used when you need extra clearance behind a door - typically a door that opens
180 degrees.
raised barrel hinge
the barrel is offset to one side instead of centered between the hinge leaves. This
type of hinge is fairly rare, but it is used when the barrel of a standard hinge would
interfere with a special frame condition or trim.
Anchor Hinge
is used as the top hinge for high-use or heavy doors. In addition to the standard
hinge leaves, there are flanges that attach to the top of the door and the underside
of the frame head. These hinges require a special door and frame prep, and the
hinges are handed - either left hand or right hand.
Which exit device configuration is the most secure on paired openings?
CVR X CVR
SVR X SVR
Rim X Rim X Removable Mullion
Mortise X Rim X Fixed Mullion
Rim X Rim X Removable Mullion
An asterisk (*) following a section number in NFPA 80 indicates what?
There are explanatory comments in the annex
What is the typical anchor type used on a knocked-down drywall frame?
Compression
Steel Stud
Multipupose
Wood Stud
Compression
What is the rabbet dimension of an equal rabbeted frame for a 1-3/4-inch wood
door?
1 9/16"
1 3/16"
1 15/16"
2 1/8"
1 15/16"
What is the maximum hourly fire rating available for a flush solid core wood door?
45 min
3 hour
60 min
90 min
90 min
On a secure right hand swing opening, removable glazing bead on doors or sidelight
frames should be installed on the...
Push or Pull
,Push side of the opening
cooridor side of the opening
pull side of the opening
Pull side of the opening
Blast resistant doors ratings are measured in units of...
PSI
Grades
Levels
PSL
PSI
When using an electric strike on a fire rated openings, the strike must be...
Normally Open
Fail Secure
Fail Safe
Fail Open
Fail Secure
In order to change higher AC voltage to a lower AC voltage you must use a...
Power Supply
Rectifier
Transformer
Switch
Transformer
Rectifier
Changes alternating current(AC) to direct current (DC)
,Switch
A device for making, breaking, or changing the connections in an electrical circuit.
Voltage drop is affected by the length and gauge of conductors used in a system.
True
False
True
What is the proper term for an 8" high protection plate that is mounted on the pull
side of a door?
Kick Plate
Armor Plate
Mop Plate
Stretcher Plate
Mop Plate
What is the appropriate lip length of an ANSI curved-lip strike plate on a 3'-0" x 7'-0"
x 1-3/4" HMD x HMF x 5-3/4" Jamb Depth x 2" Face?
1"
1 1/8"
1 1/4"
1 1/2"
1 1/4"
Which special purpose hinge moves the door out from the opening when opened to
90-degrees?
, Swing Clear Hinge
Wide Throw Hinge
Anchor Hinge
Raised Barrel Hinge
Swing Clear Hinge
Wide Throw Hinge
are used when you need extra clearance behind a door - typically a door that opens
180 degrees.
raised barrel hinge
the barrel is offset to one side instead of centered between the hinge leaves. This
type of hinge is fairly rare, but it is used when the barrel of a standard hinge would
interfere with a special frame condition or trim.
Anchor Hinge
is used as the top hinge for high-use or heavy doors. In addition to the standard
hinge leaves, there are flanges that attach to the top of the door and the underside
of the frame head. These hinges require a special door and frame prep, and the
hinges are handed - either left hand or right hand.
Which exit device configuration is the most secure on paired openings?
CVR X CVR
SVR X SVR
Rim X Rim X Removable Mullion
Mortise X Rim X Fixed Mullion
Rim X Rim X Removable Mullion
