Technician Asays  hard spots in the drum are caused by overheating the brakes.. Technician B says hard spot formation requires drum replacement.. Who is correct?

A. A only
B. B only
C. both A and B
D. neither A nor B


Answer: C

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Design a problem to help other students to better understand singularity functions.

Although there are many ways to work this problem, this is an example based on the same kind of problem asked in the third edition. Problem Sketch each of the following waveforms. (a) i(t) = [u(t–2)+u(t+2)] A (b) v(t) = [r(t) – r(t–3) + 4u(t–5) – 8u(t–8)] V

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Carry the answer to two decimal places. What is the net price of a 2-pole, 100-ampere, 230-volt entrance switch if the list price is $137 with successive discounts of 35% and 3%?

Fill in the blank(s) with the appropriate word(s).

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