# 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*/cos

^{3}Î³

- (D)

*z*’ =

*z*cos

^{3}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 A**

_{0}and face width b is given by,- (A) 1 - (

*b*/

*A*

_{0})

- (B)

*b*/

*A*

_{0}

- (C) 1/3

- (D) 1 - (b/2

*A*

_{0})

**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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