1. The most common geometric form used in gear manufacturing is ?

involute profile

convolute profile

basic diameter

spur diameter

Answer: spur diameter

Explanation:


2. We know that the limitations of helical gear is, this is overcome by using ________ ?

herring bone gear

bevel gear

hypoid gear

rake

Answer: herring bone gear

Explanation:


3. ____________ is a semi-circular disc and fits into a circular recess in the shaft. ?

Parallel key

Gib head key

Feather key

Woodruff key

Answer: Woodruff key

Explanation:


4. Determine the pitch diameter of the gear wheel with module of 3 mm and 20 number of teeth ?

6.66 mm

63 mm

60 mm

120 mm

Answer: 60 mm

Explanation:


5. The gear ratio of index head is ?

50 to 1

14 to 1

40 to 1

100 to 1

Answer: 40 to 1

Explanation:


6. Indexing head mechanism work with ?

worm & worm wheel

spur gear

bevel gear

helical gear

Answer: worm & worm wheel

Explanation:


7. The difference between the thickness of a tooth and the width of a tooth surface on which it mashes is ?

circular pitch

dimensional pitch

working depth

backlash

Answer: backlash

Explanation:


8. Which is the weakest elements in a flange coupling ?

flange

shaft

key

bolt

Answer: key

Explanation:


9. The coupling used to connect two parallel shafts whose Axis are offset by a small distance is called ?

universal coupling

Oldham coupling

muff coupling

flange coupling

Answer: Oldham coupling

Explanation:


10. Which of the following gears used to transmit motion to non parallel non intersecting shaft ?

spur gear

bevel gear

hypoid gear

worm gear

Answer: worm gear

Explanation: