The ripple frequency of a series clipper is
A) twice the ac input frequency B) equal to the ac input frequency
C) zero D) one-half the ac input frequency
B
You might also like to view...
Jones Elevator is paying $6.60 for #2 yellow corn. It has a 2.5 percent dockage for every percentage point over 15.5 percent (dry corn) moisture. You can dry it for $0.28 per bushel. You have 132,000 bushels of corn with 22.5 percent moisture. Shrinkage is figured by adjusting the weight of wet corn to dry corn. One bushel of dry corn weighs 56 pounds. Which is the better deal, drying it yourself or selling it and taking the dock, and by how much?
What will be an ideal response?
Why do communicating zone systems NOT use bypass dampers?
A) They do not use any high- or low-temperature limits. B) They can operate in free cooling mode without a bypass damper. C) They do not have a zone ventilation mode. D) They control airflow and system capacity based on the number of calling zones.
Explain how third-angle projection is derived.
What will be an ideal response?
A compressor pump down is performed in order to change the compressor oil. With the unit operating in high speed cool:
A. Front seat the receiver tank outlet valve B. Front seat the suction service valve C. Front seat the discharge service valve D. Front seat the bypass check valve