NCC Practice Test 3 Questions and
Answers10
The most common method of cooling generator sets is ___ - ANSWERS-a mounted radiator with
an engine-driven fan
A single change in direction of less than 90 degrees is known as a ___ - ANSWERS-kick
Common sources of ignition include electricity, sparking metal, heat-generating equipment, and
failed ___ - ANSWERS-electrical connections
Which of the following is true regarding modular wiring systems? - ANSWERS-Modular
components are color-coded by voltage.
Locations in which flammable gases or vapors may be present in the air in quantities sufficient
to produce explosive or ignitable mixtures are identified as ___ - ANSWERS-Class I locations
The difference between an SCR and a diode is that an SCR ____ - ANSWERS-has three terminals
Which of the following is used in HID dimming circuits to detect movement as people enter and
to bring aisle lighting to full luminance? - ANSWERS-SLOD
Dog legs can be avoided when making offset bends by ___ - ANSWERS-maintaining the
centerline for all bends
The junction box and recessed lighting fixture should be separated by a minimum distance of
____ - ANSWERS-1'
, A 30 degree kick has a hypotenuse of 10". Given that the cosecant of 30 degrees is 2, determine
the side opposite or how far off the surface the end of the kick needs to be. - ANSWERS-5"
An electrical device that operates on the principle of magnetism is a ___ - ANSWERS-motor
When used in a circuit, an LED is generally operated at about ____ - ANSWERS-10mA or less
Which of the following materials absorbs the most light? - ANSWERS-Dark red bricks
Task are fluorescent fixtures are generally two-, three-, or four-lamp fixtures made in lengths of
____ - ANSWERS-4' and 8'
Which of the following will produce an offset in a conduit run? - ANSWERS-Two kick bends in
opposite directions
When making concentric bends in conduit of different sizes, the first step in calculating the
radius of a bend is to ____ - ANSWERS-determine the radius of the innermost bend
Which of the following are often used in conjunction with time clocks to turn off lighting when it
is no longer needed? - ANSWERS-Photosensors
Corridor lighting levels in the public areas of a building should have at least ___ - ANSWERS-the
same illuminance level as the adjacent areas
Which of the following is true when joining PVC conduit? - ANSWERS-The cementing and joining
operation should not exceed 20 seconds.
Answers10
The most common method of cooling generator sets is ___ - ANSWERS-a mounted radiator with
an engine-driven fan
A single change in direction of less than 90 degrees is known as a ___ - ANSWERS-kick
Common sources of ignition include electricity, sparking metal, heat-generating equipment, and
failed ___ - ANSWERS-electrical connections
Which of the following is true regarding modular wiring systems? - ANSWERS-Modular
components are color-coded by voltage.
Locations in which flammable gases or vapors may be present in the air in quantities sufficient
to produce explosive or ignitable mixtures are identified as ___ - ANSWERS-Class I locations
The difference between an SCR and a diode is that an SCR ____ - ANSWERS-has three terminals
Which of the following is used in HID dimming circuits to detect movement as people enter and
to bring aisle lighting to full luminance? - ANSWERS-SLOD
Dog legs can be avoided when making offset bends by ___ - ANSWERS-maintaining the
centerline for all bends
The junction box and recessed lighting fixture should be separated by a minimum distance of
____ - ANSWERS-1'
, A 30 degree kick has a hypotenuse of 10". Given that the cosecant of 30 degrees is 2, determine
the side opposite or how far off the surface the end of the kick needs to be. - ANSWERS-5"
An electrical device that operates on the principle of magnetism is a ___ - ANSWERS-motor
When used in a circuit, an LED is generally operated at about ____ - ANSWERS-10mA or less
Which of the following materials absorbs the most light? - ANSWERS-Dark red bricks
Task are fluorescent fixtures are generally two-, three-, or four-lamp fixtures made in lengths of
____ - ANSWERS-4' and 8'
Which of the following will produce an offset in a conduit run? - ANSWERS-Two kick bends in
opposite directions
When making concentric bends in conduit of different sizes, the first step in calculating the
radius of a bend is to ____ - ANSWERS-determine the radius of the innermost bend
Which of the following are often used in conjunction with time clocks to turn off lighting when it
is no longer needed? - ANSWERS-Photosensors
Corridor lighting levels in the public areas of a building should have at least ___ - ANSWERS-the
same illuminance level as the adjacent areas
Which of the following is true when joining PVC conduit? - ANSWERS-The cementing and joining
operation should not exceed 20 seconds.
