A good electrical connection should _____.
a. last for approximately 90 days without any maintenance or repairs
b. be mechanically and electrically secure
c. have a resistance of no more than 25 ohms
d. have a resistance of no more than 13 ohms
b. be mechanically and electrically secure
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Which of the following is most likely to use dynamic braking?
a. Circular saw b. Forklift c. Machine tool d. Safety brake
The U.S. Fish and Wildlife Service banned the use of _____ to protect the bald eagle
a. DDT b. fishing c. quail hunting d. elk hunting
A 60% duty cycle means that the machine can be used a total of ____ minutes out of every ten minutes at the maximum rated current.
A. two B. six C. eight D. ten
When inductors are connected in series, the inductive reactance is equal to the ____.
A. product of the individual inductive reactance values B. product of the reciprocals of the individual inductive reactance values C. sum of the individual inductive reactance values D. sum of the reciprocals of the individual inductive reactance values