RACK SPUR GEAR MILLING BORING - Practice Mode

1) What is the addendum of gear teeth?

Distance between outside circle to pitch circle Distance between outside circle to root circle Distance between pitch circle to root circle Distance between outside to bottom point of gear

Correct Answer: Distance between outside circle to pitch circle

2) What is the least count of gear tooth vernier caliper?

0.1 mm 0.01 mm 0.2 mm 0.02 mm

Correct Answer: 0.02 mm

3) Which instrument is used to check the chordal addendum of a gear teeth?

Screw gauge Vernier caliper Gear tooth vernier caliper Feelar gauge

Correct Answer: Gear tooth vernier caliper

4) What is the use of sector arm on dividing head?

Lock the index crank in position Eliminate counting holes each time Fix the index plate on its correct location Avoid the back lash of worm and Worm wheel

Correct Answer: Eliminate counting holes each time

5) How many turns of index crank is required for one complete turn of index head spindle?

20 28 40 46

Correct Answer: 40

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