WorksheetsKSP
Total questions: 29
Worksheet time: 22mins
Segmental chips are formed during machining
mild steel
cast iron
high speed stee
high carbon steel
Cast iron during machining produces
continuous chips
discontinuous chips
continuous chips with built-up-edge
none of these
The cutting tool in a milling machine is mounted on
spindle
arbor
column
knee
A fixture does not guide the tool.
Correct
inCorrect
Gear lapping is an operation
after heat treatment
prior to heat treatment
for gear reconditioning
none of these
The facing is an operation of
bevelling the extreme end of a workpiece
embossing a diamond shaped pattern on the surface of a workpiece
reducing the diameter of a workpiece over a very narrow surface
machining the ends of a workpiece to produce a flat surface square with the axis
A drill considered as a cutting tool having zero rake, is known as a
flat drill
straight fluted drill
parallel shank twist drill
tapered shank twist drill
Which of the following statement is wrong about ultra-sonic machining?
A.It is best suited for machining hard and brittle materials.
B.It cuts materials at very slow speeds.
C.It removes large amount of material.
D.It produces good surface finish.
Larger end cutting edge angle __________ tool life.
A.increases
B.decreases
C.does not effect
The lead screw of a lathe has __________ threads
A.single start
B.double start
C.multi-start
D.any one of these
In up milling, the thickness of chip is
A.minimum at the beginning of the cut and maximum at the end of the cut
B.maximum at the beginning of the cut and minimum at the end of the cut
C.uniform throughout the cut
D.none of these
In ultra-sonic machining, the metal is removed by
A.using abrasive slurry between the tool and work
B.direct contact of tool with the work
C.maintaining an electrolyte between the work and tool in a very small gap between the two
D.erosion caused by rapidly recurring spark discharges between the tool and work
Grinding wheels should be tested for balance
A.only at the time of manufacture
B.before starting the grinding operation
C.at the end of grinding operation
D.occasionally
The lathe spindles are usually made hollow and provided with
A.internal taper
B.external taper
C.internal and external taper
D.no taper
When the backgear is engaged in a backgeared headstock, the spindle speed reduces considerably.
A.Agree
B.Disagree
As the cutting speed increases, tool life decreases.
A.Yes
B.No
Threading is an operation of
A.smoothing and squaring the surface around a hole
B.sizing and finishing a small diameter hole
C.producing a hole by removing metal along the circumference of a hollow cutting tool
D.cutting helical grooves on the external cylindrical surface
surface plate is used to check the trueness of flat surfaces.
A.True
B.False
A saw which cuts wood during the return stroke of the saw is known as
A.push saw
B.pull saw or draw saw
Dielectric is used in
A.electro-chemical machining
B.ultra-sonic machining
C.electro-discharge machining
D.laser machining
A twist drill is specified by its
A.shank, material and diameter
B.shank, lip angle and size of flute
C.material, length of body and helix angle
D.any one of these
The hole to be drilled for tapping is __________ the outside diameter of the thread on the tap.
A.equal to
B.smaller than
C.greater than
In which of the following machine, the work remains stationary and the tool is rotated?
A.Vertical boring machine
B.Horizontal boring machine
C.Precision boring machine
D.Jig boring machine
The cutting speed of a drill depends upon the
A.material of drill
B.type of material to be drilled
C.quality of surface finish desired
D.all of these
The chamfering is an essential operation after
A.knurling
B.rough turning
C.boring
D.thread cutting
Ultra-sonic machining is best suited for
A.tool steels
B.sintered carbides
C.glass
D.all of these
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
D.all of the above
A mandrel is used to hold
A.an eccentric work
B.a heavy work
C.a thin work
D.none of these
Jigs are used
A.for holding and guiding the tool in drilling, reaming or tapping operations
B.for holding the work in milling, grinding, planing or turning operations
C.to check the accuracy of workpiece
D.none of the above
