Which of these statements about downshifting for a long downhill grade is true
a. The proper time to downshift is just after the vehicle starts down the hill.
b. It allows engine compression and friction to help the brakes slow the vehicle.
c. It should not be done with automatic transmissions.
d. It is necessary if the vehicle has retarders.
Answer: b. It allows engine compression and friction to help the brakes slow the vehicle.
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A. A B. C C. G D. W
A conductive optical fiber cable for general-purpose use is marked as Type ____________________.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements is not a plausible and reasonable design constraint to impose when designing a new Rankine cycle heat engine?
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A run of 1,000 feet with a 1.2% grade will result in a drop of __________ inches.
Fill in the blank(s) with the appropriate word(s).