The hysteresis loss in a transformer is ________
A) caused by the resistance of the wire B) another name for flux leakage loss
C) caused by current flowing in the core D) caused by rapid reversal of the magnetic field
D
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What improper operation can lead to algae growth or sludge buildup that can foul process equipment?
A) Excess blowdown B) Circulating cooling water through a heat exchanger with ruptured tubes C) Formation of ice-fog when operating in cold climates D) Improper /incorrect treatment of cooling water chemically
A tool used for checking system pressures, evacuating systems, recovering systems, and charging systems is:
A) A digital thermometer. B) A vacuum pump. C) A recovery cylinder. D) A gauge manifold.
A garage owner uses 108 liters of motor oil to make oil changes in 18 automobiles. How many full liters (on the average) does each require?
A. 5 B. 6 C. 7 D. 8
What is the difference between utility patents and design patents?
What will be an ideal response?