Design Engineer Question:
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When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be __________ the bearing modulus.

A. 5 times
B. 10 times
C. 15 times
D. 20 times


Option C

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Circumferential joint in boilers is used to get the required length of a boiler.

A. True
B. False
In an ordinary bolt, the effect of the impulsive loads applied axially is concentrated on the cross-sectional area at the root of the threads.

A. Yes
B. No