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Mechanical Engineering - Machine Design

Exercise : Machine Design - Section 4
11.
In worm gears, the pressure angle is half the angle between two inclined faces in axial plane.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
For crank shaft bearings, the ratio of the length of the journal to its diameter is less than unity.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Lewis equation in gears is used to find the
tensile stress in bending
shear stress
compressive stress in bending
fatigue stress
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
In order to determine the stresses in a thin cylinder due to an internal pressure, it is assumed that
the effect of curvature of the cylinder wall is neglected
the tensile stresses are uniformly distributed over the section of the walls
the effect of the restraining action of the heads at the end of the pressure vessel is neglected
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
All stresses produced in a belt are
compressive stresses
tensile stresses
both tensile and compressive stresses
shear stresses
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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