Q.1
In metal machining, the work-tool contact zone is a zone where heat is generated due to
Q.2
The snag grinding is done
Q.3
The operation of smoothing and squaring the surface around a hole is known as
Q.4
The operation of making a cone-shaped enlargement of the end of a hole is known as
Q.5
Segmental chips are formed during machining
Q.6
When the cutting edge of the tool is dull, then during machining
Q.7
In oblique cutting system, the cutting edge of the tool
Q.8
The velocity of tool along the tool face is known as
Q.9
Which of the following operation is first performed?
Q.10
Flank wear depends upon the
Q.11
Crack in grinding wheel is developed due to
Q.12
The machining of titanium is difficult due to
Q.13
If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as
Q.14
Friction at the tool-chip interface can be reduced by
Q.15
Which of the following statement is wrong?
Q.16
The angle formed by the leading edge of the land with a plane having the axis of the drill, is called
Q.17
The obtuse angle, included between the chisel edge and the lip as viewed from the end of a drill, is called
Q.18
For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is
Q.19
For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is
Q.20
The specific cutting energy used for establishing the machinability of the metal depends upon its
Q.21
The cutting speed of a drill depends upon the
Q.22
The size of abrasive grain required in a grinding wheel depends upon the
Q.23
The material which on machining produces chips with built up edge is
Q.24
A 15 mm drilling machine means that it can drill a hole
Q.25
The binding material used in cemented carbide tools is
Q.26
In the relation VTn = C, the value of n for carbide tools is
Q.27
In the relation VTn = C, the value of n for ceramic tools is
Q.28
The carbide tools operating at very low cutting speeds (below 30 m/min)
Q.29
The type of reamer used for reaming operation in a blind hole, is
Q.30
Stellite preserves hardness up to a temperature of
0 h : 0 m : 1 s