14) The removal rate and surface roughness in EDM increases with

Increasing current density and decreasing frequency of sparks.

Increasing both current density and frequency of sparks.

Decreasing both current density and frequency of sparks.

Decreasing current density and increasing frequency of sparks.

Answer is:

Increasing current density and decreasing frequency of sparks.

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15) Electrodes for EDM are made of

Iron

Steel

Graphite

Silver

Answer is:

Graphite

16) Tool wear can be minimised by reversing the polarity and using copper tools, it is called as

No Wear EDM

Wear EDM

Full wear EDM

Half wear EDM

Answer is:

No Wear EDM

17) A laser is an optical transducer that converts

Electrical energy into coherant light.

Chemical energy into coherent light.

Mechanical energy into coherent light

Heat energy into coherent light.

Answer is:

Electrical energy into coherant light.

18) LBM uses the light energy of a laser beam to remove material by

Conduction

Convention

Radiation

Vaporization and ablation

Answer is:

Vaporization and ablation

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14) The removal rate and surface roughness in EDM increases with

Increasing current density and decreasing frequency of sparks.

Manufacturing Technology MCQ with Answers

Related Manufacturing Technology MCQ with Answers

15) Electrodes for EDM are made of

Graphite

16) Tool wear can be minimised by reversing the polarity and using copper tools, it is called as

No Wear EDM

17) A laser is an optical transducer that converts

Electrical energy into coherant light.

18) LBM uses the light energy of a laser beam to remove material by

Vaporization and ablation

Manufacturing Technology MCQ with Answers