Why are the copper losses in the line considerably less for a three-wire system?
What will be an ideal response?
The copper losses in the line are considerably less for a three-wire system for several reasons: the motor power is transmitted at a higher voltage requiring less current for a given load; the neutral carries no current when the two lighting circuits are balanced; and the copper losses are much less because less wire and current are required.
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When mortar is specified using proportion specification, various solid materials that constitute masonry mortar are proportioned based on their ______.
A) wet volumes. B) wet weights. C) dry weights. D) dry volumes. E) none of the above.
Which one of the following would likely be most resistant to postharvest handling problems?
A. peaches B. cut roses C. leaf lettuce D. carrots
The symbol in this graphic is a
A) N-channel enhancement mode MOSFET. B) P-channel depletion mode MOSFET. C) P-channel enhancement mode MOSFET. D) N-channel depletion mode MOSFET.
Three-phase transformers are available in:
A) Alpha and wye configurations. B) Alpha and omega configurations. C) Delta and wye configurations. D) Delta and omega configurations.