The resistance to current flow produces _____, which can be measured to determine the amount of resistance.
A. power
B. force
C. heat
D. an electrical shock
Answer: C
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DC injection braking is used on _____.
a. the stationary windings of AC motors b. compound DC motors where a slower stopping method is acceptable c. the rotors of shunt motors d. the rotors of series motors
How are holes made for fertilizing plants?
What will be an ideal response?
Which of the following statements is not correct?
A) Mechanical timing relays provide 0.05 to 180 seconds of on-delay and off-delay with an accuracy of +/- 10 percent. B) The instantaneous contact state change is the same as the waveform of the timed contacts. C) Some drift of the timer setting over time is typical. D) Pneumatics is used to develop the time delay by the controlled release of air.
Find the phase angle at which an instantaneous voltage of 144 appears in a wave with a peak value of 500 volts. Round the answer to the nearer degree.
Fill in the blank(s) with the appropriate word(s).