What is step 5 of sketching an irregular shape, as shown in the accompanying figure?
A. Draw the arcs.
B. Lay out the basic rectangles.
C. Draw the center line.
D. Draw the squares.
Answer: A
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Shipping is an important phase in the heavy construction industry and sometimes involves the drafter. Briefly discuss a type of drafter's sketch and how it can be applied in the shipping phase.
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In many soil profiles, the subsoil is high in clay, but is also quite permeable to percolating water. Why?
A) The water table may be present in the subsoil. B) Prismatic structure may be well developed. C) The subsoil may have an organic texture. D) Clay generally promotes free water movement. E) All of the above are common reasons.
Explain what is meant by a deep-discharge battery
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An AC induction machine has six poles and is designed for 60-Hz, 240-V (rms) operation. When the machine operates with 10 percent slip, it produces 60 N-m of torque.
a. The machine is now used in conjunction with a friction load that opposes a torque of 50 N-m. Determine the speed and slip of the machine when used with the above-mentioned load. b. If the machine has an efficiency of 92 percent, what minimum rms current is required for operation with the load of part a? (Hint: You may assume that the speed–torque curve is approximately linear in the region of interest.)