A tool which holds pipe securely and permits one plumber to do work that otherwise would require two
workers is called a _____.
a. winch
b. threader
c. vise
d. ratchet
c
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Answer the following statement(s) true (T) or false (F)
1. The external wiring diagram is used to locate problems and failures in the operation of the controller. 2. One of the most advantageous characteristics of the motor-generator set drive is its inherent capability to regenerate. 3. Electrically controlled, variable speed motor drives offer a wide choice of speed ranges, torque, and horsepower characteristics. 4. For some machinery with precise requirements, AC motors provide characteristics that are not available on DC motors. 5. Static DC drives utilize moving parts in the power conversion equipment that converts (rectifies) and controls the AC power.
The egg cell in cattle lives for about _____ hours after it is released if it is not fertilized
a. 12 c. 24 b. 18 d. 36
Pets have been found to have a beneficial effect on the elderly, but not on people who are ill, unemployed, or experiencing grief after the loss of a loved one
Indicate whether the statement is true or false
One of Suzanne’s project engineers e-mailed her the screen-shot (below) of his spreadsheet analysis of the annual costs and savings for two equivalent systems considered for installation as a major upgrade of the fire and safety systems that reduce the possibility of human injury on the company’s prime assembly line. He included the following statement in the e-mail: “Since the company’s MARR is 20% per year, the extra investment in FirstSafe (FS) is not justified with a breakeven incremental ROR of 16.86%. However, with an exception to reduce the required return to 16%, or slightly above this, for this case only, FirstSafe is economically acceptable over FireWall (FW). Besides, I like the features on FirstSafe much better than those of the other, less expensive FW system. Can I
go ahead and order the FirstSafe system?” From all that you have learned in these last two chapters, would you recommend that Suzanne accept this analysis and respond “Yes” to the request to purchase FirstSafe? If not satisfied, what additional information would you suggest that Suzanne request of her engineer?
What will be an ideal response?