This set of Machine Kinematics Questions and Answers for Aptitude test focuses on “Bevel Gears – 2”.

1. The mathematical form of the bevel tooth profile which closely resembles a spherical involute but is fundamentally different is

a) crown

b) back cone

c) octoid

d) none of the mentioned

View Answer

Explanation: Octoid is the mathematical form of the bevel tooth profile which closely resembles a spherical involute but is fundamentally different is

The sharp corner orming the outside diameter is crown.

2. The angle formed between an element of the pitch cone and the bevel gear axis is

a) shaft angle

b) pitch angle

c) spiral angle

d) none of the mentioned

View Answer

Explanation: The angle between the tooth trace and an element of the pitch cone, corresponding to helix angle in helical gears is spiral angle.

The angle formed between an element of the pitch cone and the bevel gear axis is pitch angle.

3. The angle between the tooth trace and an element of the pitch cone, corresponding to helix angle in helical gears is

a) shaft angle

b) pitch angle

c) spiral angle

d) none of the mentioned

View Answer

Explanation: The angle between the tooth trace and an element of the pitch cone, corresponding to helix angle in helical gears is spiral angle.

The angle formed between an element of the pitch cone and the bevel gear axis is pitch angle.

4. The diameter and plane of rotation surface or shaft centre which is used for locating the gear blank during fabrication of the gear teeth is known as

a) crown

b) back cone

c) generating mounting surface

d) none of the mentioned

View Answer

Explanation: The diameter and plane of rotation surface or shaft centre which is used for locating the gear blank during fabrication of the gear teeth is known as generating mounting surface.

5. The sharp corner orming the outside diameter is

a) crown

b) back cone

c) octoid

d) none of the mentioned

View Answer

Explanation: The sharp corner orming the outside diameter is crown.

The length of teeth along the cone distance is face width.

6. The angle between elements of the face cone and pitch cone is

a) addendum angle

b) pitch angle

c) spiral angle

d) none of the mentioned

View Answer

Explanation: The angle between mating bevel gear axes, also the sum of the two pitch angles is spiral angle.

The angle between elements of the face cone and pitch cone is addendum angle.

7. The angle between mating bevel gear axes, also the sum of the two pitch angles is

a) shaft angle

b) pitch angle

c) spiral angle

d) none of the mentioned

View Answer

Explanation: The angle between mating bevel gear axes, also the sum of the two pitch angles is spiral angle.

The angle between elements of the face cone and pitch cone is addendum angle.

8. The length of teeth along the cone distance is

a) crown

b) face width

c) octoid

d) none of the mentioned

View Answer

Explanation: The length of teeth along the cone distance is face width.

The sharp corner orming the outside diameter is crown.

9. The angle of a cone whose elements are tangent to a sphere containing a trace of the pitch circle is

a) crown

b) back cone

c) octoid

d) none of the mentioned

View Answer

Explanation: The angle between elements of the root cone and pitch cone is dedendum angle.

The angle of a cone whose elements are tangent to a sphere containing a trace of the pitch circle is back cone.

10. The angle between elements of the root cone and pitch cone is

a) addendum angle

b) dedendum angle

c) spiral angle

d) none of the mentioned

View Answer

Explanation: The angle between elements of the root cone and pitch cone is dedendum angle.

The angle of a cone whose elements are tangent to a sphere containing a trace of the pitch circle is back cone.

**Sanfoundry Global Education & Learning Series – Machine Kinematics.**

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