Network recovery teams may be used to replacing downed systems, but it is unlikely that they have experience in physically repairing damaged systems.
Answer the following statement true (T) or false (F)
True
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The small amount of magnetism retained by soft steel is known as ____________________ magnetism and is both desirable and important in the operation of electrical equipment.
Fill in the blank(s) with the appropriate word(s).
A(n) _________failure is one that is caused by a mistake during servicing the machine.
A. constant B. improper service C. intermittent D. historic
PROBLEM 3.52 Solve Prob. 3.51, assuming that cylinder AB is made of steel, for which G ? 11.2 ? 106 psi. PROBLEM 3.51 The solid cylinders AB and BC are bonded together at B and are attached to fixed supports at A and C. Knowing that the modulus of rigidity is 3.7 ? 106 psi for aluminum and 5.6 ? 106 psi for brass, determine the maximum shearing stress (a) in cylinder AB, (b) in cylinder BC.
A self-contained ice machine should not operate in an ambient temperature lower than _____
a. 80°F b. 70°F c. 50°F d. 40°F