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400 Important Manufacturing And Production Technology MCQ Question and Answer | PDF Free Download
1.A _________ grinding wheel is used to grind soft materials.
- ACourse grained
- BMedium grained
- CFine grained
- DNone of these
2.Ceramic tools are fixed to tool body by
- ASoldering
- BBrazing
- CWelding
- DClamping
3.In electrochemical machining, the gap between the tool and work is kept as
- A0.1 mm
- B0.4 mm
- C0.35 mm
- D0.75 mm
4.If a particular Fe-C alloy contains less than 0.83% carbon, it is called
- AHigh speed steel
- BHypo eutectoid steel
- CHyper eutectoid steel
- DCast iron
5.A bottoming tap has
- AIts end tapered for about three or four threads
- BIts end tapered for about eight or ten threads
- CFull threads for the whole of its length
- DNone of the above
6.Which of the following statement is correct about nose radius?
- AIt improves tool life
- BIt improves the surface finish
- CBoth (A) and (B)
- DNone of these
7.If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as
- AARC
- BShort ARC
- CARC length
- DARC blow
8.Friction at the tool-chip interface can be reduced by
- ADecreasing the rake angle
- BIncreasing the depth of cut
- CDecreasing the cutting speed
- DIncreasing the cutting speed
9.The hardness of a grinding wheel is determined by the
- AHardness of abrasive grains
- BAbility of the bond to retain abrasives
- CHardness of the bond
- DAbility of the grinding wheel to penetrate the work piece
10.The floating position of the holding fixture in a rotary transfer device is used to
- AImprove the accuracy of location
- BReduce the tendency to over-index
- CImprove upon the acceleration and deceleration characteristics
- DReduce the cycle time
11.The cutting angle of a flat drill varies from
- A3° to 8°
- B20° to 30°
- C60° to 90°
- D90° to 120°
12.The relief or clearance at the cutting edge of a flat drill varies from
- A3° to 8°
- B20° to 30°
- C60° to 90°
- D90° to 120°
13.Low helix angle drills are preferred for drilling holes in
- APlastics
- BCopper
- CCast steel
- DCarbon steel
14.In centreless grinding, work place centre will
- AAbove the line joining the two wheel centres
- BBelow the line joining the two wheel centres
- COn the line joining the two wheel centres
- DAt the intersection of the line joining the wheel centres with the work place plane
15.In down milling, the thickness of chip is
- AMinimum at the beginning of the cut and maximum at the end of the cut
- BMaximum at the beginning of the cut and minimum at the end of the cut
- CUniform throughout the cut
- DNone of these
16.In up milling, the thickness of chip is
- AMinimum at the beginning of the cut and maximum at the end of the cut
- BMaximum at the beginning of the cut and minimum at the end of the cut
- CUniform throughout the cut
- DNone of these
17.When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as _______ double cover butt joint.
- ASingle riveted
- BDouble riveted
- CBoth (A) and (B)
- DNone of these
18.As tool and work are not in contact in EDM process
- ANo relative motion occurs between them
- BNo wear of tool occurs
- CNo power is consumed during metal cutting
- DNo force between tool and work occurs
19.In _________ operation, the chip thickness is minimum at the beginning of the cut and it reaches to the maximum when the cut terminates.
- AConventional milling
- BClimb milling
- CFace milling
- DEnd milling
20.Which of the following statement is correct for oblique cutting system?
- AThe cutting edge is inclined at an angle less than 90° with the normal to the velocity of the tool
- BFrequently, more than one cutting edges are in action
- CThe chip flows on the tool face at an angle less than 90° with the normal on the cutting edge
- DAll of the above