In a typical DC electric braking circuit, power is supplied to the braking relay by a(n) _____.

a. NOTC contact
b. NCTO contact
c. NOTO contact
d. NCTC contact


c. NOTO contact

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Butt strips should be _____.

a. cleaned with a solvent before use b. checked for proper fit c. heated to conform to the correct shape d. left in their box until they are needed

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The main characteristic of static electricity is that a prolonged or steady flow of current is not possible.

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

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(a) Determine all reactions and bar forces produced by the applied load in Figure P9.33. (b) If support B settles 1 in. and support C settles 0.5 in. while the load acts, recompute the reactions and bar forces. For all bars the area = 2 in. 2 and E = 30,000 kips/in. 2

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ASE-Style Multiple Choice The term MOST-Likely used to imply that a solution is aqueous with a pH of 2 and below, or 12.5 and above is:

A. ignitability B. corrosiveness C. reactivity D. toxicity

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