Ag Science Content Exam Practice

Which welding process uses a continuously fed wire electrode and shielding gas?

• SMAW

• GMAW

• GTAW

• OFC

In electric-motor terminology, RPM stands for _____

• Rated Power Maximum

• Revolutions Per Minute

• Resistance Phase Motor

• Rotor Position Measurement

The most common sharpening bevel angle on a general-purpose steel drill bit is about _____ per side.

• 59°

• 45°

• 82°

• 30°

According to Ohm’s Law, electric current (I) equals voltage (V) divided by _____

• Capacitance

• Resistance

• Inductance

• Power

The primary function of a tractor’s PTO (power take-off) shaft is to _____

• Raise hydraulic implements

• Transmit rotational power to attached equipment

• Monitor engine speed

• Engage four-wheel drive

A gear with 24 teeth meshes with a gear of 12 teeth. The speed ratio is _____

• 1 : 1

• 1 : 2

• 2 : 1

• 3 : 2

In MIG welding, “stick-out” refers to the _____

• length of visible electrode wire past the contact tip

• distance between work clamp and electrode holder

• thickness of the weld puddle

• depth of weld penetration

The symbol ▽ in a wiring schematic most commonly represents a _____

• ground connection

• fuse

• switch

• resistor

To convert mechanical energy to electrical energy on a tractor, you would use a(n) _____

• starter motor

• alternator

• solenoid

• regulator

In oxy-fuel welding, the green hose is used to carry _____

• Oxygen

• Acetylene

• Propane

• Argon