Agriculture Mechanics Technology II Pretest

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.

• 15%

• 39%

• 50%

• 90%

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.