The ripple frequency of a half-wave rectifier is
A) twice the ac input frequency B) equal to the ac input frequency
C) one-half the ac input frequency D) zero
B
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A welding rod container holds 50 pounds of rod. One welder can burn 2 pounds per hour. How many hours will the can last 5 welders?
What will be an ideal response?
Backfilling against basement or foundation walls should be delayed until _____.
a. the first-floor construction is in place b. approval by the building inspector c. masonry has cured for at least two weeks d. completion of the building's exterior
When does an energized diesel engine cranking motor produce peak torque?
A. At close to stall RPM B. At the equivalent of 225 engine rpm C. At maximum cranking motor rpm D. After 15-seconds of cranking
A battery with an ampere-hour rating of 100 will theoretically provide a steady current of 100 mA for one hour and 50 mA for two hours
Indicate whether the statement is true or false