Lesson 5 Flashcards
Powered Equipment Safety-Compressors and Portable Generators (22 cards)
In construction, compressed air is used to run ? tools.
a. hydraulic
b. pneumatic
c. power-driven
d. underground
b. pneumatic
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Air Compressors,” Paragraph 1, Sentence 2
An air ? prevents the tank of an air compressor from over pressurizing.
a. filter
b. level indicator
c. pressure valve
d. regulator
c. regulator
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Air Compressors,” Paragraph 2, Sentence 2
Compressing air often creates ? in the air system.
a. heat
b. moisture
c. steam
d. vibration
b. moisture
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Petcock Valve,” Paragraph 1, Sentence 2
A ? valve is used to drain the water out of an air tank.
a. petcock
b. relief
c. stainless steel
d. tee
a. petcock
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Petcock Valve,” Paragraph 1, Sentences 1 and 5
Aside from corroding an air tank from the inside, moisture does not affect any other operation of the air compressor.
True or False?
False
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Petcock Valve,” Paragraph 1, Sentence 4
The air piping from the air tank connects to the ? valve, which is used to connect the air hoses.
a. ball
b. check
c. universal
d. stop
a. ball
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Ball Valve,” Paragraph 1, Sentence 1
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.
a. high-pitched
b. high-velocity particles
c. hydraulic fluid
d. uncontrollable whipping
d. uncontrollable whipping
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Air Hoses,” Paragraph 2, Sentence 2
An acceptable noise level, as defined by OSHA, in the work area is ? for an eight-hour period.
a. 85 dB
b. 105 dB
c. 115 dB
d. 125 dB
a. 85 dB
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Air Compressor Noise Levels,” Paragraph 2, Sentence 2
As the noise level increases by three decibels, the amount of exposure time is cut by ? .
a. ¼
b. ⅜
c. ½
d. ¾
c. ½
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Air Compressor Noise Levels,” Paragraph 2, Sentence 4
A jackhammer typically has a noise level of ? .
a. 85 dB
b. 90 dB
c. 100 dB
d. 130 dB
d. 130 dB
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Air Compressor Noise Levels,” Paragraph 3, Sentence 2
Air compressors are not suitable for food, ? , pharmaceutical, or sanitary purposes.
a. breathing
b. cleaning
c. confined spaces
d. sandy locations
a. breathing
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Other Safety Concerns,” Paragraph 1, Bullet 3
Generators produce electricity by converting ? energy to ? energy.
a. DC / AC
b. fossil fuel / mechanical
c. gasoline / electrical
d. mechanical / electrical
d. mechanical / electrical
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Portable Generators,” Paragraph 2, Sentence 1
If a window is open, it is okay to use a gas-powered electrical generator inside a house when there is a power failure.
True or False?
False
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Where to Use Generators,” Paragraph 1, Sentence 2
The main danger of using a generator inside a confined space is ? gas.
a. carbon dioxide
b. carbon monoxide
c. methane
d. methylene chloride
b. carbon monoxide
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Where to Use Generators,” Paragraph 1, Sentences 3-4
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.
True or False?
False
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Where to Use Generators,” Paragraph 1, Sentence 2
Never ? a generator in a confined area or while the engine is still hot.
a. choke
b. fuel
c. ground
d. start
b. fuel
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Where to Use Generators,” Paragraph 3, Sentences 2-3
A GFCI device on a generator opens the circuit due to a(n) ? in the load of the circuit.
a. frequency (Hz) change
b. imbalance
c. loss of power
d. neutral to ground contact
b. imbalance
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Electrical Hazards,” Paragraph 1, Sentence 4
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.
True of False?
False
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Extension Cords,” Paragraph 1, Sentences 5-6
The size of a generator is determined by how many ? of power it can produce.
a. amperes
b. phases
c. potential EMF
d. watts
d. watts
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Wattage,” Paragraph 1, Sentence 1
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
a. 3,000 W
b. 4,000 W
c. 6,000 W
d. 10,000 W
c. 6,000 W
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Wattage,” Paragraph 1, Sentences 3-9
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.
a. 4,208 W
b. 5,112 W
c. 7,118 W
d. 8,156 W
b. 5,112 W
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Wattage,” Paragraph 1, Sentence 5
If a generator is hooked up to household wiring that is connected to the electrical grid, the utility crew may be in danger of ? .
a. back-feed
b. false electrical readings
c. overcurrent
d. unbalanced grounds
a. back-feed
Reference: Powered Equipment Safety–Compressors and Portable Generators, “Household Generators,” Paragraph 2, Sentence 2
