Describe a datum and how it is used.

What will be an ideal response?


A datum is a reference point, axis, or plane from which dimensions are located and essential information is derived. A datum may be a point, line, plane, cylinder, or other exact feature. Datums are used in design, manufacturing, CNC, and many other processes. Datums have indispensable roles to perform in geometric dimensioning and tolerancing.

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A transfer case used with a transaxle is called a ________.

A) Torque biasing device B) Power transfer unit C) Torque split unit D) Coupler device

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Technician A says a short piece of fuel hose should be placed over the rod bolts to protect the crankshaft during removal and installation. Technician B says you should wear clean latex gloves before handling engine bearings. Who is correct?

A. Technician A B. Technician B C. Both technicians D. Neither technician

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When water must be replenished in a battery it should be:

A. Filled till the fluid level reaches the vents B. Level with the top of the plates C. Just below the top of the plates D. 1/8 inch below the vents

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What is the ideal or preferred DPF regeneration cycle?

A. Active. B. Manual. C. Passive. D. Low temperature.

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