Tractor Tech Practice Quiz 1

Ohm’s Law is represented by which of the following

• Volts(E) = Amperes(I) x Ohms (R)

• Amperes = Volts(E) / Ohms(R)

• Ohms = Volts(E) / Amperes(I)

• All of the above

Low voltage electronic connections can oxidize and corrode, causing high-resistance circuit malfunctions that can be improperly diagnosed as open-circuit malfunctions even though they are still physically connected

• True

• False

Ohm’s Law is the mathematical relationship between E, I, and R, which states it will take 1 volt to push 1 Amp of current through 1 Ω of resistance.

• True

• False

The electrolyte in a wet-cell battery is a mixture of sulfuric acid and water, and can cause acid burns

• True

• False

A shorted circuit occurs when there is a break in the wire or the wire connection at a load

• True

• Fasle

Gasoline contains on an average more BTU per gallon than diesel fuel

• True

• False

Two gears are in mesh; Gear A has 12 teeth; Gear B has 24 teeth. When Gear A has made one complete revolution, Gear B has traveled ½ of a revolution

• True

• False

Hydraulic pressure is created by

• Resistance to flow

• Ability of fluid to flow through larger hoses

A large “driving” gear will drive a smaller “driven” gear more slowly but with greater torque.

• True

• False

For efficient combustion, the air-fuel ratio (by weight) for diesel engines can go as high as 40:1

• True

• False