The hoof angle can be checked by using a ____.

A. hoof level
B. rasp
C. shoe level
D. punch


Answer: A

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___________ are similar to photo eyes except that they emit and receive sound instead of light.

A. Sourcing signals B. Sinking signals C. Optical isolation D. Ultrasonic sensors

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A parallel RL circuit has R = 4 ? and L = 1H. The input to the circuit is is(t) = 1.4e^(–t) u(t) A. Find the inductor current i?(t) for all t>0 and assume that i? (0)= –1.4 A.

What will be an ideal response?

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The two classifications of overload relays are thermal and _____.

a. magnetic b. shading c. eutectic d. bimetallic

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You need to determine i* per year for the cash flows shown below. Since you have a new boss, you decided to perform a thorough analysis. Do the following:

(a) Use a spreadsheet to find i*.
(b) Develop two charts on the spreadsheet: a col­umn chart that plots cash flows versus year, and a scatter chart showing PW values versus a range of i values, one of which is i*. (Hint: Use Figure 7–4 as a guide.)
(c) You were told when handed the estimates that the rate of return was about 25%. Deter­mine the cash flows for years 2, 3, and 4 that are necessary to realize an i* of 25% per year, if they remain in the same proportion to each other as initially estimated.

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