Related Questions
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4
A jig is defined as a device which
A. Holds and locates a workpiece and guides and controls one or more cutting tools
B. Holds and locates a workpiece during an inspection or for a manufacturing operation
C. Is used to check the accuracy of workpiece
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4
The hard grade grinding wheels are denoted by the letters
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4
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)
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4
In order to have interference fit, it is essential that the lower limit of the shaft should be
A. Greater than the upper limit of the hole
B. Lesser than the upper limit of the hole
C. Greater than the lower limit of the hole
D. Lesser than the lower limit of the hole
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4
A grinding wheel is said to be of _________ if it holds the abrasive grains more securely.
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4
Gear lapping is an operation
B. Prior to heat treatment
C. For gear reconditioning
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4
A 15 mm drilling machine means that it can drill a hole
A. Of maximum diameter 15 mm
C. Having cross-sectional area of 15 mm²
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4
An expendable pattern is used in
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4
Work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm on 1.6 mm thick mild steel tube. Welding cycle consists of 3 cycles on and 2 cycles off Power supply is at 50 Hz. Calculate R.P.M. and energy requirement of the above circular electrodes assuming effective resistance between electrodes as 100 ohm.
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4
In the relation VTn = C, the value of n for carbide tools is
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4
Two plates of the same metal having equal thickness are to be butt welded with electric arc. When the plate thickness changes, welding is achieved by
B. Adjusting the duration of current
C. Changing the electrode size
D. Changing the electrode coating
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4
A coarse grained grinding wheel is used to grind
A. Hard and brittle materials
B. Soft and ductile materials
C. Hard and ductile materials
D. Soft and brittle materials
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4
What is the type of joining process called, where the parts to be welded are kept in contact and rotated relative to each other and axial pressure is applied when the desired temperature is obtained?
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4
Stellite preserves hardness upto a temperature of
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4
The tail stock set over method of taper turning is preferred for
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4
The factor considered for evaluation of machinability is
A. Cutting forces and power consumption
C. Type of chips and shear angle
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4
What is the type of welding defect caused due to poor deposition of weld rod is called?
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4
If the tearing efficiency of a riveted joint is 50%, then ratio of rivet hole diameter to the pitch of rivets is
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4
In oblique cutting of metals, the cutting edge of the tool is
A. Perpendicular to the workpiece
B. Perpendicular to the direction of tool travel
C. Parallel to the direction of tool travel
D. Inclined at an angle less than 90° to the direction of tool travel
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4
A set of eight form relieved milling cutters for each module is provided to enable cutting of gears of different
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4
Dielectric is used in
A. Electrochemical machining
C. Electro discharge machining
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4
The thrust force will increase with the increase in
A. Side cutting edge angle
D. End cutting edge angle
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4
The angle between the shear plane and __________ is called shear angle.
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4
The guideways are of
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4
Shrinkage allowance on pattern is provided to compensate for shrinkage when
A. The temperature of liquid metal drops from pouring to freezing temperature
B. The metal changes from liquid to solid state at freezing temperature
C. The temperature of solid phase drops from freezing to room temperature
D. The temperature of metal drops from pouring to room temperature
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4
In order to prevent tool from rubbing the work _________ on tools are provided.
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4
Two streams of liquid metal which are not hot enough to fuse properly result into a casting defect known as
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4
In drilling softer materials, the cutting speed is _________ as compared to harder materials.
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4
A process of removing metal by pushing or pulling a cutting tool is called
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4
The silicon carbide abrasive is chiefly used for grinding