What is the frequency of an AC waveform that completes 20 cycles per half second?

a. 10Hz
b. 20Hz
c. 30Hz
d. 40Hz


d. 40Hz

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Mechanical engineers are involved in the design, development, testing, and manufacturing machines, robots, tools, gas turbines, internal combustion engines.

a. True b. False

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An electrical circuit using 12 volts and having 10 ohms of resistance would have a current of:

A. 1.2 amperes. B. .2 ampere. C. 1 ampere. D. 12 amperes.

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Some animals are ________ to classify them into appropriate age groups for show ring classification.

A. Measured for hip height B. Mouthed C. Nose printed

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When testing an SCR with an ohmmeter by placing the negative lead on the cathode and the positive lead on the gate results in a low resistance reading, this would indicate that the SCR is __________.

A. good B. bad C. inconclusive D. none of the above

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