Q.1
For harder alloy steel, the point angle of the drill is kept
Q.2
In ultrasonic machining, the metal is removed by
Q.3
The rear teeth of a broach
Q.4
A drill mainly used in drilling brass, copper or softer materials, is
Q.5
Crater wear leads to
Q.6
The primary purpose of a sprue in a casting mould is to
Q.7
A CNC vertical milling machine has to cut a straight slot of 10 mm width and 2 mm depth by a cutter of 10 mm diameter between points (0,0) and (100,100) on the XY plane (dimensions in mm). The feed rate used for milling is 50 mm/min, milling time for the slot (in seconds) is
Q.8
Which of the following parameters influence the axial feed rate in centerless grinding?
Q.9
The lip angle of a single point tool is usually
Q.10
In a plain milling cutter, the chip space between the back of one tooth and the face of the next tooth is called
Q.11
In drilling operation, the metal is removed by
Q.12
Small nose radius
Q.13
The cutting speed is maximum while machining _________ with a high speed steel tool.
Q.14
The cutting speed is minimum while machining _________ with a high speed steel tool.
Q.15
Which among the NC operations given below are continuous path operations?
Arc Welding (AW), Drilling (D), Laser Cutting of Sheet Metal (LC), Milling (M), Punching in Sheet Metal (P), Spot Welding (SW)
Q.16
The material property which depends only on the basic crystal structure is
Q.17
The shear velocity is the velocity of
Q.18
A ring gauge is used to measure
Q.19
The grinding of long, slender shafts or bars is usually done by
Q.20
Surface grinding is done to produce
Q.21
The percentage of carbon in gray cast iron is in the range of
Q.22
What is the name of the device used in arc welding circuits for the purpose of modifying the rate of current change when the weld road is varied rapidly?
Q.23
Thread grinding requires work speed from
Q.24
Tool life is measured by the
Q.25
The different spindle speeds on a lathe form
Q.26
A better machinable metal is one which gives
Q.27
The facing is an operation of
Q.28
Trepanning is an operation of
Q.29
Lapping is an operation of
Q.30
Threading is an operation of
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