Related Questions

In electro-discharge machining, dielectric is used to
A Help in the movement of the sparks
B Control the spark discharges
C Act as coolant
D All of these
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
A Plus
B Minus
C Divide
D None of these
In ultrasonic machining, tool is made of
A Tungsten carbide
B Brass or copper
C Diamond
D Stainless steel
In hot machining, tool is made of
A Tungsten carbide
B Brass or copper
C Diamond
D Stainless steel
The angle made by the face of the tool and the plane parallel to the base of cutting tool is called
A Rake angle
B Cutting angle
C Clearance angle
D Lip angle
For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature of
A 500
B 1000
C 1750
D 2750
For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is
A 5 m/min
B 10 m/ min
C 15 m/min
D 30 m/min
For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is
A 10 m/min
B 15 m/min
C 22 m/min
D 30 m/min
The tool material, for faster machining, should have
A wear resistance
B red hardness
C toughness
D all of the mentioned
When the cutting edge of the tool is dull, then during machining
A Continuous chips are formed
B Discontinuous chips are formed
C Continuous chips with built-up edge are formed
D No chips are formed

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