Which of the following acronyms is used to describe an engine piston that is at the exact bottom of its travel?

A. TDC
B. BDC
C. ATDC
D. BTDC


Answer: B

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To ensure maximum safety in a control transformer, the secondary control circuit is _____.

a. controlled by taps b. connected to an autotransformer c. isolated from the primary line circuit d. less than 120V

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Rock is disintegrated into soil by processes such as:

A) warming and cooling B) wetting and drying C) ?wind erosion D) all the above

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What helps to filter water before it reaches open areas that store surface water?

a. Weeds c. Sand in the soil b. Wetlands d. Strainers

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If the overprotection rating for an appliance is not marked and the appliance is rated over 13.3 amperes, the overcurrent protection shall not exceed ____% of the rated current.

A. 50 B. 75 C. 100 D. 150

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