Gears ITI Machinist Industrial Training MCQ with Answers - ObjectiveBooks

# Practice Test: Question Set - 01

1. Which one of the following types of bevel gears is mainly used in automobile drives?
(A) Straight tooth bevel gears
(B) Spiral bevel gears
(C) Hypoid gears
(D) None of the above

2. 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

3. Which one of the following is metric helical gear proportion for indexing movement?
(A) 10/N
(B) 20/N
(C) 30/N
(D) 40/N

4. It is the angle between the pitch cone generator and the root surface of the tooth space. For which bevel gear element is this definition?
(B) Dedendum angle
(C) Pitch cone angle
(D) Shaft angle

5. To cut 38 teeth on a helical gear having an angle of 45° which cutter number should be used?
(A) Cutter number 1
(B) Cutter number 2
(C) Cutter number 3
(D) Cutter number 4

6. '2.25 m' is given as proportion for straight teeth rack. For which element is this proportion?
(B) Dedendum
(C) Whole depth
(D) Tooth thickness

7. Which one of the following is NOT the advantage of helical gears?
(A) Smooth operation
(B) Lesser load carrying capacity
(C) Greater load carrying capacity
(D) Noiseless running

8. When the axes of two shafts are perpendicular and non-intersecting, use
(A) Spur gears
(B) Bevel gears
(C) Worm gears
(D) Helical gears

9. Which one of the following is the metric helical gear proportion for real module (M)?
(A) M
(B) NM
(C) PD/N
(D) NM/M

10. To cut straight teeth rack if module (m) = 3 and number of teeth = 20, the length of rack will be ________
(A) 75 mm
(B) 135 mm
(C) 94.2 mm
(D) 188.4 mm

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