Which one of the following statement correctly describes the construction of a bevel gear type differential?

Which one of the following statements correctly describes the construction of a planetary gear type differential?

A

The six planetary pinions rotate in constant mesh with the internal gears.

B

One drive shaft is splined to the central gear and the other to the planetary gear.

C

Each planetary pinion gear meshes with both the central gear and the internal gear.

D

The internal gear is fixed to the planetary gear.

If b denotes the face width and L denotes the cone distance for a bevel gear, then the bevel factor is written as

A

$$\frac{{\text{b}}}{{\text{L}}}$$

B

$$\frac{{\text{b}}}{{2{\text{L}}}}$$

C

$$1 - 2{\text{bL}}$$

D

$$1 - \frac{{\text{b}}}{{\text{L}}}$$

In which of the following type of gear train the first gear and the last gear are co-axial.

A

Simple gear train

B

Compound gear train

C

Reverted gear train

D

None of the mentioned

While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is

A

Independent of index change gear ratio

B

Dependent on speed change gear ratio

C

Interrelated to index change gear ratio

D

Independent of speed and index change gear ratio

The face 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

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

For a bevel gear having the pitch angle $$\theta $$, the ratio of formative number of teeth (TE) to actual number of teeth (T) is

A

$$\frac{1}{{\sin \theta }}$$

B

$$\frac{1}{{\cos \theta }}$$

C

$$\frac{1}{{\tan \theta }}$$

D

$$\sin \theta \cos \theta $$

If 75% students of a class answered the first question in a test correctly, 55% answered the second question correctly and 20% answered neither of the questions correctly, what percent answered both the questions correctly?

A

50

B

34

C

44

D

14

If 75 percent of a class answered the first question on a certain test correctly, 55 percent answered the second question on the test correctly, and 20 percent answered neither of the questions correctly, what percent answered both correctly?

A

10%

B

20%

C

30%

D

50%

In helical gears, the right hand helixes on one gear will mesh __________ helixes on the other gear.

A

Right hand

B

Left hand

C

Both A and B

D

None of these

Which one of the following statement correctly describes the construction of a bevel gear type differential?

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