Name two ways to change the polarity of a dc generator
What will be an ideal response?
The direction of rotation can be reversed or the polarity of the field winding can be reversed. A third way is to reverse the polarity of the load.
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Equipment used to combine and level-match a multiplicity of electronic signals, as from microphones, electronic instruments, and recorded audio is referred to as a(n) ____.
A. panel board B. mixer C. audio swapper D. signal transformer
Why would an employer try to prevent secondary boycotts?
What will be an ideal response?
When an SCV used on a utility tractor?s hydraulic system is in the neutral position, the cylinder it is controlling
should _____. a. lock in a fixed position b. creep slowly c. extend d. retract
Modern residential oil furnaces sense the flames using:
A) Ultraviolet light sensors. B) A thermal sensing stack switch. C) Flame rectification. D) A cadmium sulfide cell.