Mechanical Engineering - Machine Design

16.
The property of a material which enables it to resist fracture due to high impact loads, is called toughness.
True
False
Answer: Option
Explanation:
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17.
The resultant axial load on a bolt depends upon
external load applied
initial tension due to tightening of the bolt
relative elastic yielding of the bolt and the connected members
all of the above
Answer: Option
Explanation:
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18.
Wire ropes as compared to cotton ropes
are lighter in weight
offer silent operation
can withstand shock loads
all of these
Answer: Option
Explanation:
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19.
The thickness of key is usually taken equal to one-sixth of diameter of shaft.
Yes
No
Answer: Option
Explanation:
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20.
Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radii 80 mm and 40 mm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to
W/2
2 W/3
W/9
8 W/9
Answer: Option
Explanation:
No answer description is available. Let's discuss.