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Which measuring tool would be used to determine the diameter of a crankshaft journal?
Answer:
dial bore gauge
Explanation:
The dial bore gauge measures the inside of round holes, such as the bearing journals. This one tool can measure 2″ up to 6″ diameter holes. Both tools are needed in order to check the interior and exterior dimensions of the crankshaft, rods and engine block journals, as well as the thickness of the bearings themselves
Choose the correct statement:
Select one:
A. Turning the steering wheel rotates the pinion and moves the rack up and down.
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B. The teeth on both the pinion and the rack are helical gears.
C. A large pinion means the number of turns of the steering wheel is increased.
D. The steering ratio is the same on all vehicles,
Answer:
the answer would be C
Explanation:
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Why couldn't the Mars Science Laboratory land using airbags to bounce to the Martian surface from a parachute?
A. The presence of liquid water made it necessary to land the rover on its wheels.
B. Scientists and engineers were concerned that the airbags could become tangled in the MSL.
C. Engineers were worried the airbags might deflate too soon.
D. The heavier weight of the MSL made airbag landing technology impractical.
Answer: D. The heavier weight of the MSL made airbag landing technology impractical.
Explanation:
Airbags have been used by NASA before to land objects on Mars such as during the Pathfinder and Spirit and Opportunity missions due to their practicality in landing in a planet like Mars with its thin atmosphere.
This however could not be used for the Mars Science Laboratory mission because the rover involved which was called Curiosity, was simply too heavy to use airbags to land.
Answer:
The heavier weight of the MSL made airbag landing technology impractical.
Explanation: