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Kevin lighting review
Kevin lighting review
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Kevin's lighting review
Flashcards
36 cards
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Questions
36
Answers
1
What is the diameter of a rapid start, T8 fluorescent lamp?
1"
0.5"
3.14159"
1.5"
2
Two of the most common faults in single phase systems are: Phase to phase and phase to neutral
False
True
3
What is the name of the breaker that provides over current protection only
Magnetic only circuit breaker
Instantanious trip circuit interrupter
Current fault breaker
Moulded case circuit breaker
4
Mercury lamps are normally designed for operating:
In the horizontal position
With the base down
With the base up
In any position
5
Is it acceptable to leave the distribution panel directory completely blank?
Yes
Sometimes
Im creating a scavenger hunt for the next electrician that opens the panel
No
6
What is the interrupting rating expected of an HRC fuse?
200,000 A
100,000 A
10,000 A
5,000 A
7
Most surge protection devices (SPD) have a current rating of
100A - 1000A
5 kA - 15 kA
1 kA - 5 kA
10 kA - 20 kA
8
When testing exit and emergency lighting systems a permanent record of maintenance and inspections must be kept for unit
False
True
9
What, in certain types of moulded case circuit breakers, is not always there?
Terminal connectors
Operating mechanism
Trip elements
Arc extinguisher
10
If the voltage at the lamp socket is less than __% of the required OCV, the ballast should be replaced
50%
90%
75%
85%
11
An isolation switch:
Is used to disrupt the flow of current
Is used as a disconnect
Is rated to be used under load
Ensures equipment cant be energized after the circuit is disconnected
12
In reference to an instantaneous trip circuit interrupter. It looks like a thermal magnetic breaker, expect its missing:
Instantanious trip bar
Arc extinguisher
Magnetic element
Thermal trip element
13
For exit and emergency lighting systems a secondary battery is charged by means of:
Passing DC current through in the direction of discharge
Passing AC current through in the direction of discharge
Passing DC current through opposite to the direction of discharge
Passing AC current through opposite to the direction of discharge
14
Which of the following would NOT be considered a piece of utilization equipment?
Motorcycle
Electric clothes dryer
Street light
Electric range
15
Refer to exit sign: The receptacle that the unit connects to has to be at least __ off the floor and within __ of unit
1.5m and 2.5m
2.5m and 1.5m
1.5m and 1m
2m and 1.5m
16
A typical 20A single pole 120/240 breaker protects against overloads and short circuits in low voltage systems under __V
500V
240V
750V
120V
17
As a general rule, the life of the ballast is reduced by ____% for each ___°C increase above the design temperature
50% for each 10°C
25% for each 15°C
60% for each 5°C
35% for each °12C
18
A fluorescent lamps light output decreases rapidly over the first ____ hours
500
100
10
50
19
Surges on a system are transient and typically only last a few
Milliseconds
Minutes
Seconds
Hours
20
When current exceeds __A an HRC fuse must be used for circuit protection
50,000A
200,000A
10,000A
5,000A
21
When testing emergency lighting systems, battery voltage should never drop below __% during the testing period
90%
91%
89%
92%
22
The typical efficacy of an induction lamp is __ to __ lumens per watt
65 to 70
70 to 75
55 to 60
60 to 65
23
The ANSI code designation for 36 in a H36BT-1000/DX HID lamp stands for:
Deluxe color code number
Percentage of mercury vapour produced
Ballast type
Nominal wattage
24
The following is true for a regulator ballast
It is smaller and the least expensive type
It is larger and more expensive than other types
25
Which is the most common ballast for a metal halide lamp
Regulator ballast
Auto regulator ballast
High pressure sodium ballast
Reactor ballast
26
What is the minimum number of lamps required to be connected to unit equipment?
Two
One
Three
Four
27
The NBC states that emergency lighting illumination must last for at least __ long
1 hour
6 hours
12 hours
30 min
28
Modern energy savings fluorescent lamps:
All are correct
Save energy with only slightly reduced light output
Use 20% less energy and produce 25% less light
Require special ballasts
29
Which common light application of HID light sources does NOT belong
Street Lighting
Sports Stadium
Gas lighting
Industrial
30
In a typical device enclosure, what diameter of knockout is the center punch?
1"
3/4"
1/4"
1/2"
31
CEC requires all circuit breakers to be
Trippy
Trip proof
Trip free
Trip magnetized
32
Frequently, emergency lighting takes the form of unit equipment. The housing does NOT contain one of the following
Transfer relay
Rheostat
Test switch
Rechargeable battery
33
The average life of a fluorescent lamp is closest to:
25,000 hours
50,000 hours
10,000 hours
5,000 hours
34
Mercury vapour lamp voltages range from
10V - 120V
120V - 600V
120V - 480V
208V - 480V
35
If an enclosure does not have factory knockouts, an electrician does NOT use this tool to cut their own
Hole saw
Monobit
Knockout cutters
Unibit
36
What is the maximum amperage rating of any plug fuse?
50A
30A
15A
25A
