What is the method of brazing used to join relatively small assemblies made from materials that either do not oxidize at the brazing temperature or can be protected from oxidation with a flux?
A. Torch brazing
B. Dip brazing
C. Resistance brazing
D. Furnace brazing
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Hardness of steel greatly improves with
A. Annealing
B. Cyaniding
C. Normalizing
D. Tempering
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Side relief angle of a single point tool is the angle
A. By which the face of the tool is inclined towards back
B. By which the face of the tool is inclined sideways
C. Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of tool
D. Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
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Side rake angle of a single point cutting tool is the angle
A. By which the face of the tool is inclined towards back
B. By which the face of the tool is inclined sideways
C. Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool
D. Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
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Which of the following statement is correct in regard to centreless grinding?
A. The workpiece is supported throughout its entire length as grinding takes place
B. It is a continuous process and adopted for production work
C. It requires no holding device for the work
D. All of the above
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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?
A. Ultrasonic welding
B. Forge welding
C. Electron beam welding
D. Friction welding
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The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter 6.25 to 25 mm size and at a cutting velocity of 18 m/min is
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The negative rake is usually provided on
A. High carbon steel tools
B. High speed steel tools
C. Cemented carbide tools
D. All of these
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The grinding wheel speed (surface speed in m/min) usually varies from
A. 500 to 1000
B. 1000 to 1500
C. 1500 to 2000
D. 2000 to 2500
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What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?
A. Thermit welding
B. Electroslag welding
C. Resistance welding
D. Submerged arc Welding
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In machining metals, surface roughness is due to
A. Feed marks or ridges left by the cutting tool
B. Fragment of built-up edge on the machined surface
C. Cutting tool vibrations
D. All of these
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For turning internal tapers, the suitable method is
A. By a form tool
B. By setting over the tail stock
C. By a taper turning attachment
D. By swiveling the compound rest
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For turning small taper on long workpiece, the suitable method is
A. By a form tool
B. By setting over the tail stock
C. By a taper turning attachment
D. By swiveling the compound rest
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In oblique cutting system, the maximum chip thickness
A. Occurs at the middle
B. May not occur at the middle
C. Depends upon the material of the tool
D. Depends upon the geometry of the tool
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Which one among the following welding processes uses non-consumable electrode?
A. Gas metal arc welding
B. Submerged arc welding
C. Gas tungsten arc welding
D. Flux coated arc welding
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The trade name of a nonferrous cast alloy composed of cobalt, chromium and tungsten is called
A. Ceramic
B. Stellite
C. Diamond
D. Cemented carbide
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For generating a Coon’s surface we require
A. A set of grid points on the surface
B. A set of grid control points
C. Four bounding curves defining the surface
D. Two bounding curves and a set of grid control points
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Crater wear occurs mainly on the
A. Nose part, front relief face and side relief face of the cutting tool
B. Face of the cutting tool at a short distance from the cutting edge only
C. Cutting edge only
D. Front face only
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Flank wear occurs mainly on the
A. Nose part, front relief face and side relief face of the cutting tool
B. Face of the cutting tool at a short distance from the cutting edge
C. Cutting edge only
D. Front face only
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The aluminium oxide abrasive is chiefly used for grinding
A. High speed steel
B. Carbon steel
C. Wrought iron
D. All of these
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