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CM 2112 > Electrical Multiple Choice > Flashcards

Electrical Multiple Choice Flashcards

1
Q

What wires are used to power the main junction box and the circuit breaker panels?

a. Non-Metallic Sheathed Wires
b. Triplex Wires
c. Single Strand Wires
d. Panel Feed Wires

A

d. Panel Feed Wires

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2
Q

What is used mostly in single-phased service drop conductors, between the power pole and weather heads with two insulated aluminum wires wrapped with a third bare wire.

a. Panel Feed Wires
b. Triplex Wires
c. Non-Metallic Sheathed Wires
d. Main Feeder Wires

A

b. Triplex Wires

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3
Q

What prevents drips and water-logging in conduit runs?

a. Reducers
b. Conduit Bodies
c. Bends
d. Drains

A

d. Drains

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4
Q

What allows you to connect raceways of one trade size to larger or smaller ones and is also handy for areas that have limited spaces?

a. Nipples
b. Couplings
c. Bends
d. Reducers

A

d. Reducers

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5
Q

What wires connect the service weather head to the house and are made with stranded or solid THHN wire?

a. Panel Feed Wires
b. Triplex Wires
c. Main Feeder Wires
d. Single Strand Wires

A

c. Main Feeder Wires

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6
Q

What wires are used in most homes and have 2-3 conductors, each with plastic insulation, and a bare ground wire, and are covered with another layer of a bare ground wire.

a. Single Strand Wires
b. Panel Feed Wires
c. Non-Metallic Sheathed Wires
d. Triplex Wires

A

c. Non-Metallic Sheathed Wires

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7
Q

What conduits absorb vibrations and allow movement, but cannot be used outdoors, buried, or embedded?

a. Flexible Metallic Conduit
b. Electrical Nonmetallic Tubing
c. Electrical Metallic Tubing
d. Liquidtight Flexible Nonmetallic Tubing

A

a. Flexible Metallic Conduit

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8
Q

What saves time, equipment, and labor costs while coming in a variety of lengths and curvatures?

a. Bends
b. Straps
c. Conduit Bodies
d. Couplings

A

a. Bends

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9
Q

What conduits are flame retardant, resistant to sunlight, and very affordable, but cannot be used in hazardous locations?

a. Electrical Nonmetallic Tubing
b. Electrical Metallic Tubing
c. Liquidtight Flexible Nonmetallic Conduit
d. Ployvinyl Chloride Conduits

A

d. Polyvinyl Chloride Conduits

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10
Q

What is used to mount the conduit to ceilings or walls using a screw or bolts?

a. Straps
b. Reducing Washers
c. Couplings
d. Nipples

A

a. Straps

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11
Q

What is installed to ensure that both the conduit and bushing are held firmly in place?

a. Locknuts
b. Couplings
c. Bends
d. Straps

A

a. Locknuts

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12
Q

What is used to connect conduits to enclosure or box openings that have a large diameter and has threaded inner and outer surfaces?

a. Reducers
b. Hubs
c. Reducing Washers
d. Straps

A

c. Reducing Washers

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13
Q

What links together lengths of conduits and attaches site-fabricated bends?

a. Bends
b. Reducers
c. Conduit Bodies
d. Couplings

A

d. Couplings

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14
Q

What connects sections of a conduit to ensure that they are locked and installed properly, while being available in different configurations with male and female heads, or a combination of both?

a. Reducing Washers
b. Bends
c. Unions
d. Couplings

A

c. Unions

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15
Q

What conduits have the toughest and thickest walls made from coated stainless steel and aluminum?

a. Electrical Nonmetallic Tubing
b. Electrical Metallic Tubing
c. Liquidtight Flexible Nonmetallic Conduit
d. Rigid Metal Conduit

A

d. Rigid Metal Conduit

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16
Q

What creates a smooth entry point to conduits without any sharp edges, protecting the conductors form damage during wire pulls?

a. Conduit Bodies
b. Reducing Washers
c. Couplings
d. Bushings

A

d. Bushings

17
Q

What type of conduit is also known as “Greenfield” Conduit?

a. Flexible Metallic Conduit
b. Electrical Nonmetallic Tubing
c. Rigid Metal Conduit
d. Liquidtight Flexible Nonmetallic Conduit

A

a. FlexibleMetallic Conduit

18
Q

What conduit is not suitable for housing conductors carrying over 600 volts?

a. Polyvinyl Chloride Conduits
b. Liquidtight Flexible Nonmetallic Conduit
c. Electrical Nonmetallic Tubing
d. Flexible Metallic Conduit

A

b. Liquidtight Flexible Nonmetallic Conduit

19
Q

What has a variety of designs while being able to join two different types or sizes of conduits?

a. Reducing Washers
b. Bends
c. Conduit Bodies
d. Reducers

A

c. Conduit Bodies

20
Q

What conduits have pliable corrugated raceways made from non-metallic material that is resistant to chemicals, moisture and flames?

Select one:

a. Polyvinyl Chloride Conduits
b. Electrical Nonmetallic Tubing
c. Liquidtight Flexible Nonmetallic Conduit
d. Flexible Metallic Conduit

A

b. Electrical Nonmetallic Tubing

21
Q

What conduits are common in commercial applications and resist corrosion very well?
Select one:
a. Aluminum Conduits
b. Electrical Metallic Tubing
c. Liquidtight Flexible Nonmetallic Conduit
d. Flexible Metallic Conduit

A

a. Aluminum Conduits

22
Q

What can save time and money when a conduit is needed in certain situations, but as per the NEC, it cannot exceed 24 inches?

a. Reducing Washers
b. Straps
c. Reducers
d. Nipples

A

d. Nipples

23
Q

What fastens objects together to prevent movement of separation while coming in various types for different uses?

a. Reducing Washers
b. Conduit Bodies
c. Straps
d. Clamps

A

d. Clamps

24
Q

What is used to connect conduits to bus boxes or enclosures that don’t have a factory- threaded entry?

a. Hubs
b. Bends
c. Conduit Bodies
d. Straps

A

a. Hubs

25
Q

What conduits are the absolute most used, while not technically being conduits at all?

a. Electrical Nonmetallic Tubing
b. Electrical Metallic Tubing
c. Flexible Metallic Conduit
d. Liquidtight Flexible Nonmetallic Conduit

A

b. Electrical Metallic Tubing

CM 2112 (12 decks)

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