Ag Mech Pre Test

What common material is often used as an aggregate in concrete mixtures?

• Sand

• Gravel

• Topsoil

• Clay

What is the purpose of using flux when soldering?

• Improve conductivity

• Prevent oxidation

• Increase resistance

• Enhance flexibility

In a series circuit, how does adding more bulbs affect the brightness of each bulb?

• Increases brightness

• Decreases brightness

• No effect on brightness

• Causes bulbs to flicker

Which of the following is commonly used in agricultural machinery for wireless communication?

• FM Radio

• Bluetooth

• AM Radio

• Infrared

What component is used to adjust the resistance in a circuit?

• Capacitor

• Diode

• Resistor

• Potentiometer

What color is typically used for the "neutral" wire in household electrical wiring?

• Black

• Red

• Green

• White

Which unit is used to measure electrical current?

• Volts

• Watts

• Amps

• Ohms

What type of pipe is commonly used for irrigation systems in agriculture?

• PVC

• Copper

• Galvanized steel

• PEX

Which type of valve is commonly used to regulate water flow in irrigation systems?

• Ball Valve

• Gate Valve

• Check Valve

• Butterfly valve

Which type of electrical wire is commonly used for underground installations?

• THHN

• NM-B

• UF

• MC