Most worldwide industrial accidents are caused by _____________.

Fill in the blank(s) with the appropriate word(s).


Human error

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The basic purpose of switchgear is to _____.

a. provide protective grounding for equipment b. provide power system protection by automatically isolating faulty components c. provide a grounding system for AC systems between 50V and 1,000V d. insulate conductors from hazardous atmospheres

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COMPRESSOR-100 utilizes what type of impeller.

a. open back-ward-bladed impeller, b. open radial-bladed impeller c. closed back-ward bladed impeller d. thin-wall, flexible vanes.

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Safety is being discussed. Technician A says never attempt to remove the starter unless the battery is disconnected. Technician B says remove the battery negative terminal, and as an added safety precaution, cover the terminal in electrical tape to prevent accidental connection. Who is correct? 

A. A only B. B only C. Both A and B D. Neither A nor B

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Which of the following voltage ranges defines acceptable low-level input for a CMOS IC?

A) 2 - 5 V B) 0 - 2 V C) 0 - 0.8 V D) 0 - 1.5 V

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