DRILLING - Practice Mode

1) What is the drill hole size for 16 mm reamer?
Correct Answer: 15.75 mm
2) What is the size of drilled hole for reaming, Dia 10 mm?
Correct Answer: 9.75 mm
3) Why drilled holes are over size than drill dia?
Correct Answer: Unequal length of cutting edge
Explanation:

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4) What is the counter sink angle of chamfering in the end of drilled hole for threading?
Correct Answer: 120 Degree
Explanation:

The digital signal value for the analog signal value 6V is:

• For the digital signal value, we represent it in terms of binary digits.

• Binary numbers are the type of representation in which the numbers are written in 0s and 1s. It is the language which is understood by computers.

• The analog value is 6V.

• The digital value of 6 is 110 (calculated by division method)

• 110 = 1 * 4 + 1 * 2 + 1 * 0 = 6

• Digital value = 110

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5) Why centre screw is provided in the die stock?
Correct Answer: To adjust the depth of cut