Percussion Drilling Fundamentals

Percussion Drilling Fundamentals

1st - 3rd Grade

•

25 Qs

quiz-placeholder

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Percussion Drilling Fundamentals

Percussion Drilling Fundamentals

Assessment

Quiz

•

Science, Physics, Mathematics

•

1st - 3rd Grade

•

Practice Problem

•

Medium

Created by

Katekani Nkuna

Used 11+ times

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25 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

45 sec • 4 pts

What are the elements of percussive drilling?

Blasting

Percussion

Feed

Flushing

Rotation

2.

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

What is indexing distance?

The distance the drill bit rotates during one revolution.

The distance between drill bit buttons.

The distance the drill bit rotates before the next percussion occurs.

The depth the drill bit travels during percussion.

3.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

What is the formula for the speed of rotation of a drill bit?

4.

MULTIPLE CHOICE QUESTION

3 mins • 4 pts

Media Image

What is the name of the material used to make the drill bit buttons? Why are we using this kind of material? Please refer to the image.

Copper. It is the strongest material.

Diamond. Has the greatest hardness.

Tungsten carbide. Has a very low thermal expansion.

Steel. Scrapes rocks with ease.

5.

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

What is the flushing pressure?

10-15 psi

8-13 bar

7-15 bar

10-15 bar

6.

MULTIPLE CHOICE QUESTION

30 sec • 3 pts

What is the rotation pressure?

60-70 psi

50-70 bar

45-70 atm

50-75 bar

7.

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

What is the percussion pressure?

185 -210 bar

160-200 bar

188-230 bar

190-201 psi

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