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400 Important Manufacturing And Production Technology MCQ Question and Answer | PDF Free Download
1.The depth of cut in drilling is __________ the drill diameter.
- AEqual to
- BOne-fourth
- COne-half
- DDouble
2.In Oxyacetylene gas welding, temperature at the inner cone of the flame is around
- A3500°C
- B3200°C
- C2900°C
- D2550°C
3.In grinding irregular, curved, tapered, convex and concave surfaces, the grinder used is
- ACylindrical grinder
- BInternal grinder
- CSurface grinder
- DTool and cutter grinder
4.The soft grade grinding wheels are denoted by the letters
- AA to H
- BI to P
- CQ to Z
- DA to P
5.The operation performed on a shaper is
- AMachining horizontal surface
- BMachining vertical surface
- CMachining angular surface
- DAll of these
6.A push broach as compared to pull broach
- AHas less number of teeth
- BIs short and stocky
- CRemoves less material for each pass of the tool
- DAll of the above
7.The chuck used for setting up of heavy and irregular shaped work should be
- AFour jaw independent chuck
- BThree jaw universal chuck
- CMagnetic chuck
- DDrill chuck
8.The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.
- AEqual to
- BLess than
- CMore than
- DNone of these
9.In a shaper, the length of stroke is increased by
- AIncreasing the centre distance of bull gear and crank pin
- BDecreasing the centre distance of bull gear and crank pin
- CIncreasing the length of the arm
- DDecreasing the length of the slot in the slotted lever
10.Slow speed of the spindle is necessary in
- AThread cutting
- BTurning a work of larger diameter
- CTurning a hard or tough material
- DAll of these
11.The crystal structure of austenite is
- ABody centered cubic
- BFace centered cubic
- CHexagonal closed packed
- DBody centered tetragonal
12.The correct sequence of the following parameters in order of their maximum to minimum influence on tool life is
- AFeed rate, depth of cut, cutting speed
- BDepth of cut, cutting speed, feed rate
- CCutting speed, feed rate, depth of cut
- DFeed rate, cutting speed, depth of cut
13.Two 1 mm thick steel sheets are to be spot welded at a current of 5000 A. Assuming effective resistance to be 200 μm and current flow time of 0.2 second, heat generated during the process will be
- A0.2 Joule
- B1 Joule
- C5 Joule
- D1000 Joule
14.The average cutting speed for turning brass with a high speed steel tool is
- A15 to 19 m/min
- B25 to 31 m/min
- C60 to 90 m/min
- D90 to 120 m/min
15.The average cutting speed for turning mild steel with a high speed steel tool is
- A15 to 19 m/min
- B25 to 31 m/min
- C60 to 90 m/min
- D90 to 120 m/min
16.The rake angle required to machine brass by high speed steel tool is
- A0°
- B10°
- C20°
- D100°
17.If the helix angle of the drill is made ________ 30°, then the torque required to drive the drill at a given feed will be more.
- AEqual to
- BLess than
- CMore than
- DNone of these
18.What is the type of shielding gas for GTAW (Gas Tungsten Arc Welding) used for carbon steels only called?
- AArgon H₂
- BArgon CO₂
- CArgon Helium
- DHelium
19.In order to have interference fit, it is essential that the lower limit of the shaft should be
- AGreater than the upper limit of the hole
- BLesser than the upper limit of the hole
- CGreater than the lower limit of the hole
- DLesser than the lower limit of the hole
20.The common welding error that occurs due to wrong speed, faulty preparation, and high / low current, improper electrode size is called?
- ADistortion
- BWarping
- CPorous weld
- DPoor fusion