Instability in a Process Is Indicated When Samples

question 43

Multiple Choice

Instability in a process is indicated when samples:

• A)tend to alternate between high and low values.
• B)drift slowly either upward or downward.
• C)vary more than expected.
• D)shift abruptly either above or below the centerline.

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Definitions:

Fifth Wheel

The lower coupler assembly used on most highway tractors and lead trailers; typically consists of a pivot plate and locking jaws that engage to the kingpin upper coupler on a trailer.

Trailer

A transport vehicle without a motor, designed to be towed by another vehicle.

Tractor

A heavy-duty highway truck designed for towing trailers. Also any of a number of different types of farm and heavy equipment utility vehicles.

Tandem Axle

A pair of axles situated close together in a vehicle to support more weight than a single axle and improve stability.