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Outside 1st year Level 2 > Lesson 12 > Flashcards

Lesson 12 Flashcards

1
Q

In construction, compressed air is used to run ? tools.

Select one:

a. hydraulic
b. pneumatic
c. power-driven
d. underground

A

b. pneumatic

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2
Q

An air ? prevents the tank of an air compressor from over pressurizing.

Select one:

a. filter
b. level indicator
c. pressure valve
d. regulator

A

d. regulator

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3
Q

Compressing air often creates ? in the air system.

Select one:

a. heat
b. moisture
c. steam
d. vibration

A

b. moisture

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4
Q

A ? valve is used to drain the water out of an air tank.

Select one:

a. petcock
b. relief
c. stainless steel
d. tee

A

a. petcock

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5
Q

Aside from corroding an air tank from the inside, moisture does not affect any other operation of the air compressor.

Select one:
True
False

A

False

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6
Q

The air piping from the air tank connects to the ? valve, which is used to connect the air hoses.

Select one:

a. ball
b. check
c. universal
d. stop

A

a. ball

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7
Q

Safety concerns that arise from using compressed air equipment include: the noise from the air pressure, the noise from the pneumatic tools, and the ? from an unattached hose under pressure.

Select one:

a. high-pitched blast
b. high-velocity particles
c. hydraulic fluid
d. uncontrollable whipping

A

d. uncontrollable whipping

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8
Q

An acceptable noise level, as defined by OSHA, in the work area is ? for an eight-hour period.

Select one:

a. 85 dB
b. 105 dB
c. 115 dB
d. 125 dB

A

a. 85 dB

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9
Q 
As the noise level increases by three decibels, the amount of exposure time is cut by   ?  .
Select one:
a. 1/4 
b. 3/8 
c. 1/2 
d. 3/4
A

c. 1/2

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10
Q

A jackhammer typically has a noise level of ? .

Select one:

a. 85 dB
b. 90 dB
c. 100 dB
d. 130 dB

A

d. 130 dB

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11
Q

Air compressors are not suitable for food, ? , pharmaceutical, or sanitary purposes.

Select one:

a. breathing
b. cleaning
c. confined spaces
d. sandy locations

A

a. breathing

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12
Q

Generators produce electricity by converting ? energy to ? energy.

Select one:

a. DC / AC
b. fossil fuel / mechanical
c. gasoline / electrical
d. mechanical / electrical

A

d. mechanical / electrical

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13
Q

If a window is open, it is okay to use a gas-powered electrical generator inside a house when there is a power failure.

Select one:
True
False

A

False

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14
Q

The main danger of using a generator inside a confined space is ? gas.

Select one:

a. carbon dioxide
b. carbon monoxide
c. methane
d. methylene chloride

A

b. carbon monoxide

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15
Q

The generator should be placed close to the entrance of the vault the Qualified Electrical Worker is working in, so its operation can be monitored.

Select one:
True
False

A

False

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16
Q

Never ? a generator in a confined area or while the engine is still hot.

Select one:

a. choke
b. fuel
c. ground
d. start

A

b. fuel

17
Q

A GFCI device on a generator opens the circuit due to a(n) ? in the load of the circuit.

Select one:

a. frequency (Hz) change
b. imbalance
c. loss of power
d. neutral to ground contact

A

b. imbalance

18
Q

If damage is found on an extension cord, repairing it with two layers of 600-volt vinyl tape is enough to assure a worker’s safety.

Select one:
True
False

A

False

19
Q

The size of a generator is determined by how many ? of power it can produce.

Select one:

a. amperes
b. phases
c. potential EMF
d. watts

A

d. watts

20
Q

During a football game, the power goes out. To run the listed devices during the outage, a generator that produces ? should be used.

Satellite dish = 35 watts
Big screen TV = 300 watts
Microwave oven = 2000 watts
The furnace = 1200 watts running, 3200 watts startup
Select one:
a. 3,000 W 
b. 4,000 W 
c. 6,000 W 
d. 10,000 W
A

c. 6,000 W

21
Q

During an outage, the city utility crew needs to temporarily supply power to a major intersection that has the following make-up: 24 signal heads with 150-watt lamps, eight pedestrian signal heads with 69-watt lamps, and the cabinet that runs at 960 watts. A generator that can supply ? of power would be needed.

Select one:

a. 4,208 W
b. 5,112 W
c. 7,118 W
d. 8,156 W

A

b. 5,112 W

22
Q

If a generator is hooked up to household wiring that is connected to the electrical grid, the utility crew may be in danger of ? .

Select one:

a. back-feed
b. false electrical readings
c. overcurrent
d. unbalanced grounds

A

a. back-feed

Outside 1st year Level 2 (14 decks)

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