Advanced Machining and Processes Mock Test 7

10%

Question 1 of 10

1. State whether the following statement is true or false regarding the dielectric in EDM.
“In EDM, flushing through the tool is more preferred than side flushing.”

True

False

Question 1 of 10

Question 2 of 10

2. What are the values of gaps between the electrodes in EDM?

0.1 – 5 mm

0.01 – 0.5 mm

0.001 – 0.05 mm

1 – 15 mm

Question 2 of 10

Question 3 of 10

3. What happens to the surface roughness values if the MRR increases in EDM?

Increases

Decrease and increase

None of the mentioned

Decreases

Question 3 of 10

Question 4 of 10

4. Which of the following is not a function of dielectric in EDM?

Cool the section

Flush particles

Maintain voltage

Provide insulation

Question 4 of 10

Question 5 of 10

5. What are the values of current densities used in ECDB process?

5 – 10 A/cm²

1 – 5 A/cm²

15 – 20 A/cm²

10 – 15 A/cm²

Question 5 of 10

Question 6 of 10

6. How much amount of burr is produced in this process?

No burr

70 %

40 %

10 %

Question 6 of 10

Question 7 of 10

7. Which of the following are the other factors that influence the electrode wear?

Current

Voltage

Electrode material

All of the mentioned

Question 7 of 10

Question 8 of 10

8. By using EDM, how much percentage of machining costs can be reduced?

50 %

10 %

30 %

20 %

Question 8 of 10

Question 9 of 10

9. State whether the following statement is true or false regarding EDM.
“In Electro discharge machining, electric pulses generated affect the material removal.”

True

False

Question 9 of 10

Question 10 of 10

10. Which of the following tungsten carbides are used as electrodes in EDM?

Copper tungsten

All of the mentioned

None of the mentioned

Silver tungsten

Question 10 of 10