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400 Important Manufacturing And Production Technology MCQ Question and Answer | PDF Free Download
1.The angle on which the strength of the tool depends is
- ARake angle
- BCutting angle
- CClearance angle
- DLip angle
2.It is required to cut screw threads of 2 mm pitch on a lathe. The lead screw has a pitch of 6 mm. If the spindle speed is 60 r.p.m., then the speed of lead screw will be
- A10 r.p.m.
- B20 r.p.m.
- C120 r.p.m.
- D180 r.p.m.
3.The tool made of cemented carbide wear out faster at
- ASlow speeds
- BMedium speeds
- CFast speeds
- DVery fast speeds
4.Cold working of steel is defined as working
- AAt its recrystallisation temperature
- BAbove its recrystallisation temperature
- CBelow its recrystallisation temperature
- DAt two thirds of the melting temperature of the metal
5.Hot rolling of mild steel is carried out
- AAt recrystallization temperature
- BBetween 100⁰C to 150⁰C
- CBetween recrystallization temperature
- DAbove recrystallization temperature
6.In centerless grinders, the regulating wheel is inclined at
- A0° to 8°
- B9° to 15°
- C16° to 20°
- D21° to 25°
7.If the flame of the welding torch is directed towards the progress of welding, then what will you call the welding technique?
- AForehand welding
- BFlux cored ARC welding
- CElectro slag welding
- DPulsed spray welding
8.In DC arc welding, if leads are arranged in work as Negative pole of the welding arc and electrode as Positive pole of the welding arc, the arrangement is known as
- AFusion
- BReverse polarity
- CForward welding
- DDirect polarity
9.A set of eight form relieved milling cutters for each module is provided to enable cutting of gears of different
- AMaterials
- BTypes of gears
- CNumber of teeth
- DWidth of gears
10.A grinding wheel is said to be of _________ if the abrasive grains can be easily dislodged.
- ASoft grade
- BMedium grade
- CHard grade
- DNone of these
11.Dielectric is used in
- AElectrochemical machining
- BUltrasonic machining
- CElectro discharge machining
- DLaser machining
12.In electro-discharge machining, dielectric is used to
- AHelp in the movement of the sparks
- BControl the spark discharges
- CAct as coolant
- DAll of these
13.The hard grade grinding wheels are denoted by the letters
- AA to H
- BI to P
- CQ to Z
- DA to P
14.What is the welding defect caused due to improper control and poor removal of slog between passes called?
- AMismatch
- BUnder fill
- CCrack
- DPorosity
15.Crater wear is mainly due to the phenomenon known as
- AAdhesion of metals
- BOxidation of metals
- CDiffusion of metals
- DAll of these
16.The main purpose of spheroidising treatment is to improve
- AHardenability of low carbon steels
- BMachinability of low carbon steels
- CHardenability of high carbon steels
- DMachinability of high carbon steels
17.Gear finishing operation is called
- AShaping
- BMilling
- CHobbing
- DBurnishing
18.The chuck preferred for quick setting and accurate centering of a job is
- AFour jaw independent chuck
- BCollect chuck
- CThree jaw universal chuck
- DMagnetic chuck
19.The lip clearance angle is the angle formed by the
- ALeading edge of the land with a plane having the axis of the drill
- BFlank and a plane at right angles to the drill axis
- CChisel edge and the lip as viewed from the end of a drill
- DNone of the above
20.The usual value of the helix angle of a drill is
- A20°
- B30°
- C45°
- D60°