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Test: Unconventional Machining Process - 1


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10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering | Test: Unconventional Machining Process - 1

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Test: Unconventional Machining Process - 1 - Question 1

The cutting tool used in wire-EDM is made of
1. Brass
2. Copper
3. Tungsten

Which of the above tool is used?

Test: Unconventional Machining Process - 1 - Question 2

Consider the following statements pertaining to plasma arc cutting:
1. Plasma is a hot ionized gas.
2. Plasma can produce very high temperatures.
3. Plasma arc cutting is used only for electrically conductive metals.
4. Wider kerf is produced.

Which of the above are correct?

Detailed Solution for Test: Unconventional Machining Process - 1 - Question 2

Plasma arc cutting produces very narrow kerf and minimum HA

Test: Unconventional Machining Process - 1 - Question 3

Which of the following gases is used for cleaning the cat in plasma arc cutting?
1. Argon
2. Oxygen
3. Hydrogen
4. Nitrogen

Test: Unconventional Machining Process - 1 - Question 4

Water is the main, cutting agent in water jet machining. Other cutting fluid used may be

Test: Unconventional Machining Process - 1 - Question 5

The average water jet velocity in water jet machining may be

Test: Unconventional Machining Process - 1 - Question 6

In an electro - chemical machining (E C M ) operation, a square hole of diamensions 5 mm x 5 mm is drilled in a block of copper. The current used is 5000 A. Atomic weight of copper is 63 and valency of dissolution is 1. Faraday’s constant is 96,500 Coulomb. The material removal rate (in g/s) is

Detailed Solution for Test: Unconventional Machining Process - 1 - Question 6

Test: Unconventional Machining Process - 1 - Question 7

Which one of the following process conditions leads .to higher MRR\n ECM process?

Detailed Solution for Test: Unconventional Machining Process - 1 - Question 7

where,
A = gram atomic weight of the metallic ions
I = current (amperes)
p = density of the anode (gm/cm3)
Z = valency of the cation
F = Faraday (= 96,500 coulombs)

Test: Unconventional Machining Process - 1 - Question 8

Material removed by mechanical action in

Test: Unconventional Machining Process - 1 - Question 9

Material removed by thermal action in

Detailed Solution for Test: Unconventional Machining Process - 1 - Question 9

Material removal by mechanical action: AJM, Low-stress grinding, USM Material removed by electrical process: Electrochemical deburring, Electrochemical grinding , Electroch emical milling , Electrochemical polishing.
Material removed by thermal process: Electron-beam machining, Electrical discharge grinding, Laser beam machining, Plasma beam machining.
Material removed by chemical process: ECM, Photochemical maching

Test: Unconventional Machining Process - 1 - Question 10

A titanium sheet of 5 mm thickness is cut by wire-cut EDM process using a wire of 1 mm diameter. A uniform spark gap of 0.5 mm on both sides of the wire is maintained during cutting operation. If the feed rate of the wire into the sheet is 20 mm/min, the material removal rate (in mm3/min) will be

Detailed Solution for Test: Unconventional Machining Process - 1 - Question 10

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