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20 Cards in this Set
- Front
- Back
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Improper electrical terminations lead to high ___ connections, which in turn lead to electrical system failures A. Amperage B. Capacitance C. Cost D. Resistance |
D. Resistance |
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The first consideration in making good electrical connections is the type of conductor ___ involved. The NEC recognizes copper ,aluminum , and copper-clad aluminum; each of which has different physical characteristics.
A. Diameter B. Insulation C. Length D. Material |
D. Material |
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If the splice is underground, the device shall be ___ for direct-burial use. A. Designed B. Identified C. Listed D. Manufactured |
C. Listed |
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Rolling scaffolds require ___ and toeboards to be safe. A. Foot Guards B. Hand guards C. Guardrails D. Safety nets |
C. Guardrails |
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When erecting a scaffold, use ___ instead of blocking to adjust to uneven grade conditions A. Adjusting screws B. Castes with plain stems C. Cleats D. Horizontal cross braces |
A. Adjusting screws |
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Know the three types of electrical hazards |
Electrical, arc flash and thermal contact |
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Slight shock felt; not painful but disturbing. Average individual can let go. Strong involuntary reactions can lead to other injuries. These reactions best deceive a current of ___? A. 5 milliamperes B. 8 milliamperes C. 10 milliamperes D. 12 milliamperes |
A. 5 milliamperes |
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A common but perhaps overlooked conductor is the surface or subsurface of the ___? A. Building foundation B. Building steel C. Earth D. Grounding electrode conductor |
C. Earth |
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Fuses and circuit breakers are designed to protect ___? A. Conductors only B. Conductors and equipment C. Personnel D. All of the above |
B. Conductors and equipment |
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For longer alignment tasks indoors or for outside layout applications, what type of laser is recommended? A. Laser distance meter B. Self-leveling laser level C. Self leveling point to point laser D. Self leveling rotary laser |
D. Self leveling rotary laser |
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___ coating helps prevent anchor corrosion |
Zinc |
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Concrete has to cure for ___ days before you can install an anchor |
7 |
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Concrete is called “green concrete” for how many days? A. 3 B. 18 C. 28 D. 38 |
C. 28 days |
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Two causes of accident can best be described as? A. Human error / unsafe acts B. Human error/ unsafe conditions C. Unsafe acts/ unsafe conditions D. Unsafe equipment / human error |
C unsafe acts conditions |
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What is the maximum recommend length of the following ladders? Single ladder
Step ladder
Extended ladder |
30 feet
20 feet
55 feet |
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Extension ladders should have at least ___ overlap between sections when extended. A. 1’ B. 2’ C. 3’ D. 4’ |
C. 3’ |
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What should be done with a ladder when it is not in use? A. It should be laid down or lashed where it cannot fall or be blown over B. It should be romoved from the job site at the end of each day. C. It should be stood up and placed in a stairwell where there is less traffic. D. It should be stood up in a passage way so no one will trip over it |
A. |
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Material should be stacked so the weight is evenly distributed. |
True |
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All tools should be left out until quitting time in case they are needed |
False |
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Fluting has nothing to do with anchors |
Fluting has nothing to do with anchors |
