CLECTRO CHEMICAL MACHINING MCQS
- In which type of milling operation, the chip is cut off at thinnest place and the chip thickness increases along chip length
- In which type of milling maximum friction is caused
- In which milling operation, the cutting force tends to lift the workpiece
- Any number of equal divisions can be obtained on milling machine by
- In finish grinding, the grinding ratio varies from
- Grinding operation is used for
- Grinding wheel is balanced
- Which of the following processes would remove least material ?
- Which of the following operations would be performed at maximum peripheral speed?
- The process of precision grinding of part with loose dust type abrasives is known as
- Majority of the grinding wheels use the followi of bond
- Workpiece is supported as follows in cenin centreles grinding
- Buffing is the operation of
- The workpiece is advanced as follows in centrelese grinding
- Grinding wheel is balanced frequently because of
- For grinding steel and alloy steel, following material of wheel should be chosena
- Pick up incorrect statement about centreless grinding
- The regulating wheel in centreless grinding is usually
- In centreless grinding machine, the maximum angular adjustment of following order is provided
- For lapping operation, it is customary to leave only following amount of stock to be removed
- Honing operation
- For grinding cast iron, brass, aluminium, etcuse following material of wheel
- Accuracy of measuring equipment is
- Pressure applied on workpiece in case of lapping operation is
- Buffing process is used
- The following is the process used for producing fine surface finish
- Tumbling process
- Precision of measuring equipment is
- Which of the following can be used to scribe lines parallel to the edges of a part ?
- A feeler gauge is used to check
(a) down milling
(b) up milling
(c) climb milling
(d) end milling
(e) keyway milling.
keyway milling.
(a) down milling
(b) up milling
(c) climb milling
(d) end milling
(e) keyway milling.
down milling
(a) down
(b) conventional
(c) end
(d) climb
(e) form milling.
conventional
(a) simple indexing
(b) plain indexing
(c) compound indexing
(d) differential indexing
(e) any one of the above.
compound indexing
(a) 1.0 to 5.0
(b) 5.0 to 10.0
(c) 10.0 to 25.0
(d) 25.0 to 50.0
(e) 50.0 to 100.0.
5.0 to 10.0
(a) removing material
(b) shaping
(c) dressing
(d) forming
(e) finishing.
removing material
(a) at the time of manufacture
(b) before grinding
(c) after grinding operation
(d) frequently
(e) none of the above or true.
after grinding operation
(a) grinding
(b) lapping
(c) honing
(d) super-finishing
(e) buffing.
grinding
(a) surface grinding
(b) internal grinding
(c) cylindrical grinding
(d) grinding with rubber, shellac and resinoid bonded wheel
(e) snagging off hand grinding with vitrified wheel
snagging off hand grinding with vitrified wheel
(a) buffing
(b) honing
(c) lapping
(d) superfinishing
(e) polishing.
superfinishing
(a) silicate
(b) resinoid
(c) vitrified
(d) shellac
(e) rubber.
vitrified
(a) on magnetic chucks
(b) in collet chuck
(c) in centre
(d) none of the above,
(e) in universal chuck
in centre
(a) cleaning castings
(b) depositing metal by spraying
(c) broaching in reverse direction
(d) producing luster on metal surface
(e) preventing damage of metal by corrosion.
cleaning castings
(a) manually by operator
(b) automatically by machine drive
(c) on its own
(d) force exerted by regulating wheel
(e) force exerted by grinding wheel.
force exerted by regulating wheel
(a) high rpm
(b) random wear
(c) uneven wear
(d) frequent glazing
(e) high stresses.
high rpm
(a) aluminium oxide
(b) silicon carbide
(c) borazon
(d) diamond
(e) none of the above.
diamond
(a) it is suitable for long jobs
(b) rate of production as compared to cylindrical grinding is low
(c) wear and tear of machine is less
(d) cost of production as compared to cylindrical grinding is less
(e) regulating wheel is usually rubber bonded.
it is suitable for long jobs
(a) smaller than grinding wheel
(b) bigger than grinding wheel
(c) of same size as grinding wheel
(d) smaller than workpiece
(e) could be of any size.
of same size as grinding wheel
(a) 5°
(b) 10°
(c) 20°
(d) 30°
(e) 40°.
20°
(a) 0.01 to 0.1 mm
(b) 0.001 to 0.01 mm
(c) 0.5 to 1.0 mm
(d) 0.1 to 0.5 mmn
(e) none of the above.
0.01 to 0.1 mm
(a) can be used to change the location of hole or correct a sloped condition of a hole
(b) can’t be used for the application in (a) above
(c) above application is possible under some circumstances
(d) above application depends upon the size of hole
(e) none of the above.
above application is possible under some circumstances
(a) aluminium oxide
(b) silicon carbide
(c) diamond
(d) borazon
(e) none of the above.
diamond
(a) the closeness with which a measurement can be read directly from a measuring instrument
(b) a measure of how close the reading is to the true S1ze
(c) the difference between measured value and actual value
(d) the smallest change in measurand that can be measured
(e) the capability to indicate the same reading again and again for a given measurand.
a measure of how close the reading is to the true S1ze
(a) 0.01 kg/em
(b) 0.1 kg/cm2
(c) 0.5 kg/cm2
(d) 1.0 kg/cm2
(e) none of the above.
0.01 kg/em
(a) to achieve flatness
(b) to achieve roundness
(c) to improve surface finish
(d) to obtain very smooth reflective surfaces
(e) not used in workshops.
to achieve flatness
(a) shot peening
(b) sintering
(c) broaching
(d) tumbling
(e) swaging.
tumbling
(a) can be applied to any size, shape and material of workpiece
(b) can be applied only to simple and uniform shaped workpieces
(c) can be applied only to machine finished product
(d) is not suitable for cast components
(e) none of the above.
is not suitable for cast components
(a) the closeness with which a measurement can be read directly from a measuring instrument
(b) a measure of how close the reading is to the true S1ze
(c) the difference between measured value and actual value
(d) the smallest change in measurand that can be measured
(e) the capability to indicate the same reading again and again for a given measurand.
the smallest change in measurand that can be measured
(a) screw gauge
(b) vernier calipers
(c) hermaphrodite caliper
(d) divider
(e) combination set.
screw gauge
(a) screw pitch
(b) radius
(c) unsymmetrical shape
(d) surface roughness
(e) thickness of clearance.
unsymmetrical shape
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