Which of the following types of transformers can be ventilated, air-cooled, or sealed?

a. Dry-type transformers
b. Less-flammable liquid-insulated transformers
c. Oil-insulated transformers
d. Nonflammable fluid-insulated transformers


a. Dry-type transformers

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What energy source does the plant utilize for photosynthesis?

A) wind B) water C) gravity D) sun

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The overcurrent protection for an electric furnace should be:

A) No larger than the maximum overcurrent protection listed on the unit data plate. B) At least as large as the maximum overcurrent protection listed on the unit data plate. C) No larger than the minimum circuit ampacity rating used to size the wire. D) The same size as the minimum circuit ampacity rating for the wire.

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The backlash exceeds specifications. The technician should position the ring gear ________

A) Closer to the drive pinion gear B) Further from the drive pinion gear

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Technician A says contour mapping appears as sand scratches or splitting around the repair area. Technician B says that contour mapping is a condition in which the vehicle finish flakes off around areas that were not properly sanded. Who is correct?

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

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