Exercise: Machine Design

Questions for: Machine Design

The root angle of a bevel gear is equal to
A:
pitch angle - addendum angle
B:
pitch angle + addendum angle
C:
pitch angle - dedendum angle
D:
pitch angle + dedendum angle
Answer: C
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The lead angle of a worm is 22.5°. Its helix angle will be
A:
22.5°
B:
45°
C:
67.5°
D:
90°
Answer: C
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When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is
A:
0.20
B:
0.35
C:
0.50
D:
0.65
Answer: C
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Which of the following formula is used in designing a connecting rod ?
A:
Euler's formula
B:
Rankine's formula
C:
Johnson's straight line formula
D:
Johnson's parabolic formula
Answer: B
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In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called
A:
normal pitch
B:
axial pitch
C:
diametral pitch
D:
module
Answer: B
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