Massachusetts Hoisting License Practice Test

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Prepare for the Massachusetts Hoisting License Test. Utilize flashcards and multiple choice questions designed with hints and explanations to sharpen your skills. Ace your exam with confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the purpose of the swing gear on an excavator?

It connects the car body to the tracks
It stabilizes the arm during operation
It powers the hydraulic system
It controls the bucket movement

The correct answer is: It connects the car body to the tracks

The swing gear on an excavator serves a crucial role in enabling the machine to rotate its upper structure, or the house, over the base. This is essential for allowing the excavator to operate in various directions without needing to move the entire machine. By connecting the car body to the tracks, the swing gear facilitates this rotation, making it possible for the operator to swing the boom and attached implements to the desired position efficiently. This attribute enhances the excavator's versatility on the job site, providing improved maneuverability and operational capabilities without repositioning the entire vehicle. The other options provided do not accurately describe the function of the swing gear. The stabilizing of the arm is generally managed by the machine's stabilizers or counterweights. The hydraulic system is powered by the hydraulic pump, which is separate from the swing gear mechanism. Lastly, while the bucket is controlled through hydraulic cylinders, this operation goes beyond the capabilities of the swing gear itself. Instead, the swing gear’s primary function emphasizes the rotational movement of the upper structure in relation to the tracks.