What protects a motor from damage, moisture, and foreign materials?
A. housing
B. windings
C. bearings
D. armature
Answer: A
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Which of the following is not a basic category of motion for a robot mechanical arm?
A. triangular B. rectangular C. cylindrical D. spherical
Raising the end of the electrode too high or moving it too far ahead of the molten weld pool can cause ____.
A. the weld pool to harden B. burn-through C. all of the shielding gas to be blown away from the molten weld pool D. slag and metal to be deposited ahead of the weld bead
_____ synchronizers consist of a hub (called a clutch hub), sleeve, blocking ring, and inserts or spring-and-ball detent devices.
A. Block B. Disc and plate C. Plain D. Pin
When 20,000 pounds (9072 kg) is loaded onto the frame of a truck it lowers by one-inch (25 mm). However, another 30,000 pounds (13,608 kg) has to be added before it lowers another inch (25 mm). Which of the following types of suspension is this truck likely to have?
A. pneumatic B. standard leaf spring C. progressive leaf spring D. equalizing-beam