Advanced Machining Questions and Answers – EDM-Process Control, Automation, Environmental Impact

This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “EDM-Process Control, Automation, Environmental Impact”.

1. Which of the following is a major difficulty in the Electro discharge machining process?
a) Proper sparks
b) Abnormal discharges
c) Optimum feed rates
d) No burr
View Answer

Answer: b
Explanation: Avoidance of abnormal discharges has become a major difficulty in Electro discharge machining process.

2. What has been done to the off time when there is a no-load voltage of electric discharge?
a) Increased
b) Decreased
c) Reduced
d) Remains same
View Answer

Answer: a
Explanation: The off time of pulse is increased in order to avoid the abnormal electric discharges.

3. In a simple application which of the following parameters are inputs?
a) Pulse duration and current
b) Normal and abnormal pulses
c) All of the mentioned
d) None of the mentioned
View Answer

Answer: a
Explanation: Inputs used are pulse duration and current in a simple application.
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4. In a simple application which of the following parameters are outputs?
a) Pulse duration and current
b) Normal and abnormal pulses
c) All of the mentioned
d) None of the mentioned
View Answer

Answer: a
Explanation: Outputs used are normal and abnormal pulses in a simple application.

5. Which of the following are correlated with the machining conditions at output stage?
a) Machining depth
b) Surface roughness
c) Accuracy
d) All of the mentioned
View Answer

Answer: d
Explanation: Machining depth, surface roughness, accuracy are correlated with the machining conditions at the output stage.
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6. How are EDM’s levels of integration when compared to conventional machining?
a) Slower rate
b) Faster rate
c) Same rate
d) None of the mentioned
View Answer

Answer: a
Explanation: EDM’s levels of computer integration is at a slower rate when compared to conventional machining processes.

7. Manufacturing of tool electrode undergoes which of the following processes?
a) Milling
b) Turning
c) Finishing
d) All of the mentioned
View Answer

Answer: d
Explanation: The tool electrode manufacturing used in EDM has to undergo the basic production processes such as milling, turning and finishing.
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8. High temperatures produced in the working gap results in which of the following potentials?
a) Hazardous smoke
b) Toxic vapours
c) Aerosols
d) All of the mentioned
View Answer

Answer: d
Explanation: The temperatures in the working gap increases leading to hazardous smoke, vapours and aerosols.

9. Hydro carbons present in the dielectric fluid have impact on which of the body parts?
a) Eyes
b) Teeth
c) Skin
d) Nails
View Answer

Answer: c
Explanation: Hydrocarbons present in dielectric fluids of EDM will have a negative impact on the skin in our body.
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10. What happens to the Electro discharge machining process under unfavourable working conditions?
a) Will remain stable
b) Explosion may occur
c) Machining rate increases
d) Nothing happens
View Answer

Answer: b
Explanation: Explosion occurs if Electro discharge machining is done under unfavourable process variables and conditions.

11. Reduction in the electrical energy consumption will have impact on which aspects mentioned below?
a) Environmental
b) Economic
c) Environmental & Economic
d) None of the mentioned
View Answer

Answer: c
Explanation: The reduction of electric energy consumption has economic as well as environmental benefits.

Sanfoundry Global Education & Learning Series – Advanced Machining.

To practice all areas of Advanced Machining, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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