NCCER TEST ACTUAL EXAM 150 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+<\/p>\n\n\n\n
NCCER TEST 2023-2024 ACTUAL EXAM 150
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
Most common transformer on an industrial site – ANSWERsingle phase step down
applications for heat tracing systems with self regulating control
include those requiring a narrow operating range and –
ANSWER- temperature sensitive fluids
with a row of 3-4”, 3-2” and 1-1” conduits on each side for a
straight pullbox what is the minimum distance between the
opposite side walls of the box – ANSWER- 32”
As the mechanical load increases on a squirrel cage induction
motor – ANSWER- torque decreases and stator current increases
when installing cables smaller the 4\/0 in cable tray, the
allowable cable fill area must not be less than the sum of the
cable – ANSWER- cross sectional areas<\/p>\n\n\n\n
Meter used to measure pulling tension – ANSWERdynamometer
on a push button, normally closed contacts are generally used to
open a circuit to – ANSWER- initiate a stop or off circuit
function
which of the following is the classified location where
combustible dust may be present – ANSWER- class i, division i
which of the following is the classified location where
combustible fibers are always present – ANSWER- Class 3,
division ?
Minimum space between 2 ground rods – ANSWER- 6ft
how does a battery produce voltage – ANSWERelectromagnetisim
as the load decreases on a squirrel cage induction motor, its
power factor – ANSWER- increases
what size wire is needed for a 120v circuit 215 feet long one
way with a load of 39amps – ANSWER- #6<\/p>\n\n\n\n
which of the following conductors has the least resistance –
ANSWER- 1\/0
what is the primary consideration for selecting a rope for a cable
pull – ANSWER- low stretch
what is the minimum distance between raceway entries allowed
in a pull box for angle pulls – ANSWER- 6x’s the largest trade
size raceway
45degree offset multiplier – ANSWER- 1.41
all of the following are common service voltages in the US
except – ANSWER- 372\/575 three phase, four wire
Insulation resistance tester – ANSWER- megohmeter
insulation color for barrel crimp connectors for wire sizes 22-
16AWG are – ANSWER- red
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