WorksheetsElectrical Installation Multiple Choice Worksheet
Total questions: 40
Worksheet time: 20mins
These are sheet metal thorough 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
Most of the required electrical parameters apply to an incandescent bulb are
Related power and rated voltage
Related resistance and rated current.
Rated current and rated voltage.
Rated power and rated current.
When tightening a terminal screw connection, the end of the wire should pass around the screw in the same direction as the screw is turned so that.
The wire will act as a locknut.
Any pull on the wire will tighten the screw.
The wire will not turn off.
The screw can be removed more easily.
A part providing an appropriate degree protection of equipment against contains external influences and defined degree of protection against contacts with live parts any direction.
Cabinet
Enclosure
Panel board
Switch gear.
Why is it necessary to use torque wrench in tightening bolted joints of copper bus bars inside bus ducts and bus ways?
To prevent heating of joints
To reduce the resistance in the joint
To make sure the joints are well tightened.
To give the boll allowance for thermal expansion
What is the commonly used in conduit in Service Entrance?
PVC
EMT
RSC/IMC
Flex Conduit
What is the types of tilting commonly used for exposed conduit support
Conduit strap/Clamp
Condulet
Connector
Lock nut and bushing.
What will you do if the load schedule reflects a 20AT/2.0 sq.mm Lighting Branch Circuit of which circuit breaker is overrated?
Wait for your superior and let him do the corrections.
Look for another load schedule and check for differences.
Look for the wiring layout and check groupings.
Change rating to 15AT to conform with PEC requirement.
The size of circuit breaker to be used in 40 A motor full load current is
Not less than 125% of the full load
More than 115% of the full load
Less than 50AT
Equal to 100AT
The selection requirements for circuit breaker are
Ampacity, rated power and rated voltage
Ampere Frame, Ampacity and Kilo Ampere Interrupting Capacity
Kilo Ampere Interrupting Capacity, Ampere Trip and Ampere Frame
Ampere Frame, Full load Current and Rated voltage.
When measuring load current, the ammeter is connected ______.
Parallel with the source
In series with the load
Across the terminals of the load
From one load terminal to ground
The material used in long length bus bar joints to give allowance to thermal expansion is _____
Annealed soft drawn copper
Solid copper plates
Flexible braided copper plates
Flexible copper plates
The current is directly proportional to the voltage and inversely proportional to resistance.
Lenz’s Law
Power Law
Faraday’s Law
Ohm’s Law
Before adding to or altering an installation, you must ensure that
Partially tightened.
Loosely installed.
Safety precaution are followed
The power is alive.
What amount of current will be drawn by incandescent bulb connected to a 115-volt circuit if its resistance is 264.5 ohms?
0.45 amps.
0.43 amps.
0.42 amps.
2.3 amps.
When measuring ballast resistance if it is defective or good, it is necessary that the source
Energized
De-energized
Unloaded
Loaded
A circuit breaker is an electrical protective device which ______.
Protects electrical equipment from incoming spike voltage
Interrupts the circuit when overload or short circuit occurs
Regulates the voltage in the circuit
Maintains the current flow in the circuit
The 24 hours protection for home and commercial building to monitor and access the video any time anywhere on this device.
Fire alarm System.
Building Remote Controller
Telephone monitoring Cabinet.
CCTV Camera
The auxiliary device of CCTV that monitor motion daily.
Camera
Recorder
Monitor
Adapter
Which of the following is the input device.
Door Lock
Exit Button
Biometric Reader and Controller
All of the above
A part of Auxiliary device that capture live events and save as video files
Power splitter
Camera
Monitor
Recorder
The minimum size of conduit commonly used in laying-out of Auxiliary Devices
½ diameter
¾ diameter
½ PVC molding
¾ PVC molding
An electricians 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 accidents or damage to equipment
What type of hand tools commonly used of ½ diameter hole in a panel board
Cold Chisel and a hammer
Hacksaw and Hammer
Knock out Puncher and Adjustable Wrench
Hand drill
It is the connection between the grounded circuit conductor and the equipment grounding conductor at the service.
Bonding jumper
Grounding electrode conductor
Bonding jumper, main
Bonding jumper, equipment
What is the fitting commonly used for lightening between the boxes and RSC conduit?
Straight Connector
Condulet
Conduit strap
Lock nut and bushing
Part of the Auxiliary system that set the motion-trigger action individually for each camera
Live Previewing
Recording
Camera Scheduled
What is the ampacity of 8.0 sq. mm. THW wires?
35 amperes
20 amperes
25 amperes
50 amperes
What will you do if the load schedule reflects a 20AT/2.0 sq. mm. lighting branch circuit of which circuit breaker is over rated?
Wait for your superior and let him do the connections
Look for another load schedule and check for differences
Look for the wiring lay-out and check groupings
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 264.5 ohms?
0.45 amps
0.43 amps
0.42 amps
2.3 amps
What is the commonly used conduit in service entrance?
PVC
EMT
RSC/IMC
Flexible conduit
What is the type of fitting that is commonly used for exposed conduit support?
Conduit strap/clamp
Condulet
Connector
Locknut and bushing
What will you do if the load schedule reflects a 20AT/2.0 sq. mm. lighting branch circuit of which circuit breaker is over rated?
Wait for your superior and let him do the connections
Look for another load schedule and check for differences
Look for the wiring lay-out and check groupings
Change rating to 15AT to conform with PEC requirement
The size of circuit breaker to be used in a 40A motor full load current is __________?
Not less than 125% of the full load
More than 115% of the full load
Less than 50AT
Equal to 100AT
The selection requirements for circuit breaker are __________?
Ampacity, rated power, and rated voltage
Ampere frame, ampacity, and kilo ampere interrupting capacity
Kilo ampere interrupting capacity, ampere trip, and ampere frame
Ampere frame, full load current, and rated voltage
When measuring load current, an ammeter is connected __________?
Parallel with the load
In series with the load
Across the terminal of the load
From one load terminal to ground
The material used in long length bus bar joints to give allowance for thermal expansion is _?
Annealed soft drawn copper
Solid copper plates
Flexible braided copper plates
Flexible copper plates
The current is directly proportional to the voltage and inversely proportional to resistance __?
Len’s law
Faraday’s law
Power law
Ohm’s Law
Before adding to or altering an installation, you must ensure that __________?
Partially tightened
Loosely installed
Safety precautions are followed
The power is alive
What amount of current will be drawn by incandescent bulb connected to a 115-volt circuit if its resistance is 264.5 ohms?
0.45 amps
0.43 amps
0.42 amps
2.3 amps
