Test: Unconventional Machining Process - 1 - Mechanical Engineering MCQ
10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering - Test: Unconventional Machining Process - 1
The cutting tool used in wire-EDM is made of
1. Brass
2. Copper
3. Tungsten
Which of the above tool is used?
1. Brass
2. Copper
3. Tungsten
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?
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.
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Which of the following gases is used for cleaning the cat in plasma arc cutting?
1. Argon
2. Oxygen
3. Hydrogen
4. Nitrogen
1. Argon
2. Oxygen
3. Hydrogen
4. Nitrogen
Water is the main, cutting agent in water jet machining. Other cutting fluid used may be
The average water jet velocity in water jet machining may be
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
Which one of the following process conditions leads .to higher MRR\n ECM process?
Material removed by mechanical action in
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
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