A chopper circuit is used to ____.
A. change AC to DC
B. change DC to AC
C. change pulsating DC into steady DC
D. change steady DC into pulsating DC
Answer: D
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An excessive amount of water added to a mortar mixture, known as _____, destroys the water-cement ratio.
A. drowning the mortar B. fattening the mortar C. proportioning the mortar D. hydrating the mortar
Why should an AC generator never be operated open-circuit?
A. It could overcharge the battery B. It could burn out electronic components C. It could damage the AC generator stator D. None of the above
What two functions are performed by switches?
What will be an ideal response?
When should hearing protection be worn when working in a typical truck shop?
A. When running a dynamometer B. When using some pneumatic tools C. When buck riveting D. All of the above