____ diodes can be connected to form a three-phase bridge rectifier that will change three-phase AC voltage into DC voltage.
A. Two
B. Three
C. Four
D. Six
Answer: D
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When the ____ symbol is used, a length dimension is not needed.
A. weld-all-around B. weld-around C. weld-full D. weld-completely
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Which of the following is a temperature-sensing instrument?
A) Thermistors B) Manometers C) Radar gauges D) All of the above
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What is the primary fuel used in most nuclear power plants?
a. plutonium c. heavy water b. uranium d. radium
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The output of an oil furnace ignition transformer can be tested:
A) Using a voltmeter that can read 1,000 V DC. B) Using a voltmeter that can read 1,000 V AC. C) With a special high-voltage probe that reduces the voltage to a level a standard meter can read. D) Using the microamp scale on a multimeter.
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