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WorksheetsNC2 REVIEW SET A-2
Total questions: 15
Worksheet time: 8mins
What will you do if the load schedule reflects a 20AT/2.0sq.mm Lighting Branch Circuit of which circuit breaker is overrated?
Wait for your superior and let him do the corrections
look for the wiring layout and check groupings
look for another load schedule and check the differences
change rating to 15AT to conform with PEC requirement
What amount of current will be drawn by incandescent bulb connected to a 115-volt circuit if its resistance is 264.5ohms?
0.43 amps
0.45 amps
0.42 amps
2.3 amps
When measuring ballast resistance if its defective or good, it is necessary that the source_____.
energized
de-energized
unloaded
loaded
A circuit breaker is an electrical protective device which ___.
breaks power flow when a very low voltage is encountered
protects electrical equipment from incoming spike voltage
trips off when a very low current is encountered
protects electrical equipment from surges and overloads
It is the connection between the grounded circuit conductor and the equipment grounding conduit at the
Bonding Jumper
Grounding Electrode Conductor
Bonding Jumper main
Bonding jumper equipment
Which of the following is an output device?
magnetic lock
Emergency Break Glass
Exit Button
Biometric Reader and Control
The technical term for the type THW wires used mostly in industrial wirings is?
Moisture and Heat Resistant Thermoplastic
Poly Vinyl Chloride
PVC Insulated Heat Resistant
Plastic covering
Which of the following is an input device
door lock
exit button
Biometric Reader and Controller
all of the above
When skinning a small wire. The insulation should be “pencil down” rather than cut square to
prevent the braid from fraying
decrease danger of nicking the wire
saves time in making the splice
allows more insulation in the splice
The minimum size of conduit commonly used in laying-out of Auxiliary Devices
½” diameter
¾” diameter
½” PVC molding
¾” PVC molding
An electrician should always have his tools in good working condition, the most important reason being is _________
you have to exert more effort when using defective tools
your job cannot be satisfactory done without good tools
it is part of your job to keep tools in good working condition
defective tools can cause accident or damage to equipment
What type of hand tools commonly used in boring of ½” diameter hole in a panel board
knockout puncher and adjustable wrench
cold chisel and hammer
Hand drill
hacksaw and hammer
These are sheet metal troughs with hinged or removable covers for housing and protecting electrical wires and cables and in which conductors are laid in place.
bus ways
wire ways
cable ducts
cable trays
What are the type of fittings commonly used for tightening between the boxes and the conduit?
straight connector
condulet
conduit strap
locknut and bushing
The box use for typical switches
splice box
full box
square box
utility box
