Answer the following statement(s) true (T) or false (F)

Magnetic type overload relays are sensitive to ambient temperature.


ANSWER: False

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How many lineal feet of 2 × 12s are needed for the beam?



a. 48'
b. 124'
c. 180'
d. 196'

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(a) Use the RAND function in Excel© to generate 100 values from a U(0,1) distribution. Calculate the average and compare it to 0.5, the expected value for a random sample between 0 and 1. (b) For the RAND function sample, cluster the results into cells of 0.1 width, that is, 0.0 to 0.1, 0.1 to 0.2, etc., where the upper-limit value is excluded from each cell. Determine the probability for each grouping from the results. Does your sample come close to hav­ing approximately 10% in each cell?

What will be an ideal response?

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How long can power be retained in the high voltage system once it has been disabled?

A) Less than 90 seconds B) 10 to 20 minutes C) 9 hours D) None of these

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Convert the following complex numbers to polar form:

a. 7 + j9

b. ?2 + j7

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