Agricultural Systems and Technology II Practice Test

______ is the relationship between voltage, current, and resistance in an electrical circuit and states that current in a circuit is proportional to the voltage and inversely proportional to the resistance.

• Amperage

• Ohm’s Law

• Wattage

• Electricity

A ______ is a device that controls one electrical circuit by opening and closing contacts in another circuit.

• receptacle

• relay

• transformer

• coil

A ______ is a drawing that contains the logic for an application and is typically used to test and troubleshoot hardwired applications. They are used as representatives of the logical sequence of steps that occur in a control circuit.

• relay

• raceway

• ladder diagram

• control circuit

A switch rated in horsepower that is capable of interrupting the maximum operating overload current of a motor of the same horsepower rating as the switch at the rated voltage.

• motor-circuit switch

• switchboard

• Thermal protector

• surge arrester

A ______ is an isolated circuit contact that is used to activate individual circuits.

• pole

• throw

• break

• terminal

Which of the following American Wire Gauge (AWG) sizes indicates the largest wire diameter?

• 4 awg

• 18 awg

• 10 awg

• 00 awg

Identify the electrical symbol below:

• ohm

• amp

• volt

• watt

A __________ is a component used to reduce friction and to maintain clearance between stationary and rotating components of an engine.

• piston

• bearing

• rod

• tappet

During the compression event in a four-stroke engine __________.

• both valves are open

• both valves are closed

• the intake valve is open and the exhaust valve is closed

• the intake valve is closed and the exhaust valve is open

__________ is the point at which the piston is closest to the cylinder head.

• Top dead center

• Bottom dead center

• Stroke

• Crankpin