Machine Design Questions and Answers – Bevel Gears

This set of Machine Design Multiple Choice Questions & Answers (MCQs) focuses on “Bevel Gears”.

1. There are ____ common types of bevel gears.
a) 1
b) 2
c) 3
d) 4
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2. Straight bevel gears are easy to design and manufacture and give reasonably good service with quieter operation.
a) True
b) No, noise problem
c) No, vibration problem
d) None of the listed
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3. Which of the following creates smoother motion?
a) Straight bevel gears
b) Spiral bevel gears
c) Equal for straight and spiral
d) None of the mentioned
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4. When the pitch angle is greater than 90⁰, it is called external bevel gear.
a) True
b) Internal
c) Helical
d) Herringbone
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5. For crown bevel gear, pitch angle is
a) <90
b) =90
c) >90
d) None of the listed
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6. If pitch angle is >90, the bevel gear is?
a) Internal
b) External
c) Crown
d) Static
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7. Miter gears are the bevel gears mounted on shaft which are intersecting at angle greater than 90.
a) True
b) False
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8. Crown gears having a pitch angle of 90⁰ are mounted on shafts intersecting at an angle
a) =90
b) <90
c) >90
d) None of the listed
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9. Which of the following are characteristics of skew bevel gears?
a) Straight teeth
b) Mounted on parallel shafts
c) Mounted on intersecting shafts
d) All of the mentioned
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10. Hypoid gears are based on surfaces that are paraboloids of revolution.
a) True
b) False
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11. When two hyperboloids are rotated, the resulting motion is
a) Sliding
b) Turning
c) Combination of turning and sliding
d) Rotary
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12. In hypoid bevel gears, shafts may continue past each other.
a) True
b) False
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13. Hypoid gears have the following characteristics.
a) Curved teeth
b) Mounted on non -parallel non intersecting shafts
c) Efficiency of 97%
d) All of the mentioned
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14. Zerol gears are straight bevel gears with zero spiral angle.
a) True
b) False
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15. Zerol gears give lesser contact ratio.
a) True
b) No, larger contact ratio
c) Zero contact
d) None of the listed
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Sanfoundry Global Education & Learning Series – Machine Design.
To practice all areas of Machine Design, here is complete set of 1000+ Multiple Choice Questions and Answers.