Bevel Gears Multiple Choice Questions - ObjectiveBooks

# Bevel Gears MCQ Practice Test

1. In case of hypoid gears, the axes of shafts are
(A) Parallel
(B) Intersecting
(C) Non-parallel and non-intersecting and the teeth are straight
(D) Non-parallel and non-intersecting and the teeth are curved

2. When bevel gears are used to transmit power between shafts that are intersecting at an angle greater than 90°, and if the pitch angle of one of the gears is 90°, they are called,
(A) Spiral bevel gears
(B) Crown gears
(C) Straight bevel gears
(D) Hypoid gears

3. The relationship between actual numbers of teeth (z), formative number of teeth (z’) and pitch angle (Î³) is given by,
(A) z’ = z/cos Î³
(B) z’ = z cos Î³
(C) z’ = z/cos3 Î³
(D) z’ = z cos3 Î³

4. In case of skew bevel gears, the axes of shafts are
(A) Parallel
(B) Intersecting
(C) Non-parallel and non-intersecting and the teeth are straight
(D) Non-parallel and non-intersecting and the teeth are curved

5. When two identical bevel gears are used to transmit power between shafts that are intersecting at right angle, they are called,
(A) Spiral bevel gears
(B) Miter gears
(C) Straight bevel gears
(D) Hypoid gears

6. In case of external bevel gears,
(A) The pitch angle is more than 90°
(B) The pitch angle is 90°
(C) The pitch angle is less than 90°
(D) Pitch angle has no effect on type

7. Two bevel gears with 25 and 50 teeth are in mesh with each other. The pitch angle of pinion is
(A) tan-1 (0.5)
(B) tan-1 (2.0)
(C) sin-1 (0.5)
(D) sin-1 (2.0)

8. In case of internal bevel gears,
(A) The pitch angle is more than 90°
(B) The pitch angle is 90°
(C) The pitch angle is less than 90°
(D) Pitch angle has no effect on type

9. When two bevel gears having equal teeth and equal pitch angle are used to transmit power between shafts that are intersecting at right angle, they are called,
(A) Spiral bevel gears
(B) Miter gears
(C) Straight bevel gears
(D) Hypoid gears

10. Two bevel gears with 25 and 50 teeth are in mesh with each other. The pitch angle of gear is
(A) (Ï€/2) - tan-1 (0.5)
(B) sin-1 (0.5)
(C) tan-1 (0.5)
(D) (Ï€/2) - sin-1 (0.5)

11. In a concrete mixer, the bevel gears for rotating the drum are generally made by
(A) Casting
(B) Forging
(C) Hobbing
(D) Shaping

12. The face angle of a bevel gear is equal to
(A) Pitch angle + addendum angle
(B) Pitch angle - addendum angle
(C) Axial pitch
(D) Diametral pitch

13. Miter gears are
(A) Spur gears with same number of teeth
(B) Helical gears with same number of teeth
(C) Bevel gears with same number of teeth mounted on perpendicular shafts
(D) Spiral bevel gears with zero spiral angle

14. The bevel factor for a bevel gear with cone distance A0 and face width b is given by,
(A) 1 - (b/A0)
(B) b/A0
(C) 1/3
(D) 1 - (b/2A0)

15. 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

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