Agriculture Systems & Technology Exam II Review

Entanglement accidents often result from contact with ____.

• tractor hitches
• tractor tires
• power take off (PTO) shafts
• power driven rotary saws

What type of accident is considered the most common among all-terrain vehicles (ATVs)?

• Rollovers
• Spin outs
• Head-on crashes
• Skidding, sliding, or loss of traction

Leather or metal mesh gloves provide protection from ____.

• slivers and electrical hazards
• liquid chemicals and dirty surfaces
• chafing and slips
• cuts and burns

Eliminating any part of the fire triangle stops a fire. The three parts of the fire triangle include ____.

• inattention, heat, and fuel
• spark, oxygen, and heat
• spark, fuel, and combustibles
• fuel, heat, and oxygen

The fuel sources for class A, B, and C fires are ____.

• sodium, titanium, and magnesium
• textiles, wood, and paper
• wood, paper, flammable liquids, and electrical equipment
• electrical plugs, overheated wires, and improperly grounded plugs

Flatwork is any concrete that is ____.

• positioned horizontally
• poured with fiber
• decorative
• positioned vertically

Concrete that has been exposed to freezing temperatures in the first 24 hours after placement has about _____ of the strength of similarly placed concrete that was not exposed to freezing temperatures.

• 0.15
• 0.39
• 0.5
• 0.9

Ground wires are ____.

• green or bare insulated wires
• a failsafe for the circuit
• not part of the standard circuit
• All of the above.

Neutral wires ____.

• have voltage equal to or greater than the negative charge
• have a small amount of current when the load is not operating
• are red or black coated wires
• carry current constantly through complete or incomplete circuits

A battery ____.

• produces AC current
• contains no chemicals when discharged
• is a storage device for electricity
• All of the above.