Technician A says by multiplying the number of teeth on one gear by the number of teeth on a second gear, a gear ratio can be determined. Technician B says the mathematical relationship, according to the number of teeth, of one gear to another is expressed as a gear ratio. Who is correct?

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


Answer: B

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Technician A says that a lead-acid battery should be load tested by applying a load of double the CCA rating of the battery. Technician B says that a battery with frozen electrolyte must be thawed before attempting to recharge the battery. Who is correct?

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

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A smartphone display has 1200 columns and 800 rows, spatial frequencies in a row less than ____ Hz/row will not produce aliasing.

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

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What is the most common measurement of light intensity used in the United States?

a. lux c. lumen b. footpound d. footcandle

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Six batteries are tested with the following readings: 12.73 volts, 12.23 volts, 12.9 volts, 12.48 volts, 12.29 volts, and 12.16 volts. What is the average reading?

A. 12.455 B. 12.465 C. 12.475 D. 12.480

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