MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A process of zinc diffusion is known as |
| A. | Brazing |
| B. | Anodising |
| C. | Sintering |
| D. | Sherardizing |
| E. | Metallizing |
| Answer» E. Metallizing | |
| 2. |
Which of the following can be used to produce laser? |
| A. | Diamond |
| B. | Gold |
| C. | Platinum |
| D. | Emerald |
| E. | Ruby |
| Answer» F. | |
| 3. |
Merchant's machinability constant is |
| A. | 2 ? - ? - ? |
| B. | 500 tons to 1000 tons |
| C. | 2 ? - ? + ? |
| D. | ? + ? - ? |
| E. | 2 ? + ? - ? |
| Answer» F. | |
| 4. |
The depth of cut depends on the |
| A. | curring speed |
| B. | rigidity of machine tool |
| C. | tool material |
| D. | all of the above |
| E. | Parting off |
| Answer» E. Parting off | |
| 5. |
Choose the incorrect statement. The mechanism of tool wear is |
| A. | oxidation |
| B. | reduction |
| C. | diffusion |
| D. | None of the above |
| E. | Parting off |
| Answer» C. diffusion | |
| 6. |
Yellow colour on a pattern indicates |
| A. | Seat for loose core prints |
| B. | Surface to be left unmachined |
| C. | Surface to be machined |
| D. | Fillets |
| E. | Core prints |
| Answer» D. Fillets | |
| 7. |
In lathe machine the chasing dial is used during |
| A. | Taper turning |
| B. | Drilling |
| C. | Parting off |
| D. | Thread cutting |
| E. | Knurling |
| Answer» E. Knurling | |
| 8. |
Discontinuous type chips are generally produced in |
| A. | Alloy steels |
| B. | Cast iron |
| C. | Aluminium |
| D. | Duralumin |
| E. | Mild steel |
| Answer» C. Aluminium | |
| 9. |
Taper shank on drills is provided for |
| A. | Use on tapered surfaces |
| B. | Eye |
| C. | Quick intersection in spindle |
| D. | None of these |
| E. | Drilling taper holes |
| Answer» D. None of these | |
| 10. |
Poor fusion in a welded joint may be due to |
| A. | Lack of flux |
| B. | Improper current |
| C. | High welding speed |
| D. | Dirty metal surface |
| E. | None of the above |
| Answer» C. High welding speed | |
| 11. |
The accuracy of a limit gauge can be checked by |
| A. | Vernier caliper |
| B. | Micrometer |
| C. | Slip gauge |
| D. | Sine bar |
| E. | Any of the above |
| Answer» D. Sine bar | |
| 12. |
In a drilling operation |
| A. | Torque is equal to the axial force |
| B. | Torque is more than the axial force |
| C. | None of above |
| D. | Torque is half the axial force |
| E. | Torque is less than the axial force |
| Answer» E. Torque is less than the axial force | |
| 13. |
Which of the following process is preferred for cutting and welding of nonferrous metals? |
| A. | Submerged arc welding |
| B. | Inert gas arc welding |
| C. | MIG welding |
| D. | DC arc welding |
| E. | None of the above |
| Answer» C. MIG welding | |
| 14. |
While cutting with a hacksaw, the number of teeth contacting the job should be |
| A. | More than one |
| B. | Only one |
| C. | Any of (A) or (B) |
| D. | Parting off |
| Answer» B. Only one | |
| 15. |
Which of the following is a gear finishing operation? |
| A. | Gear burnishing |
| B. | Phosphate coating |
| C. | Gear lapping |
| D. | All of the above |
| E. | Parting off |
| Answer» E. Parting off | |
| 16. |
The tool used for grooving a seam is called |
| A. | Parting off |
| B. | Breasing stake |
| C. | Rivet set |
| D. | Groover |
| Answer» E. | |
| 17. |
In a Brinell hardness test the hardness number is determined by the measurement of |
| A. | Width of depression |
| B. | Depth of depression |
| C. | Diameter of depression |
| D. | Surface area of depression |
| E. | None of the above |
| Answer» E. None of the above | |
| 18. |
While using cemented carbide tipped tools on aluminium, the cutting speed could be |
| A. | 100 - 300 m/min |
| B. | 1000 m/min |
| C. | 20 - 50 m/min |
| D. | 300 - 900 m/min |
| E. | 50 - 100 m/min |
| Answer» E. 50 - 100 m/min | |
| 19. |
The most commonly used instrument for the measurement of mass or volume of flowing fluids in industrial plants are |
| A. | Impeller type |
| B. | Propeller type |
| C. | Turbine type |
| D. | Weight belt type |
| E. | Any of the above |
| Answer» F. | |
| 20. |
The tool may fail suddenly because of |
| A. | crater wear |
| B. | both crater and flank wear |
| C. | spalling |
| D. | Parting off |
| E. | flank wear |
| Answer» D. Parting off | |
| 21. |
The chips formed during the milling of aluminium are |
| A. | closed spirals |
| B. | Parting off |
| C. | helical |
| D. | snarl |
| E. | fragments |
| Answer» F. | |
| 22. |
A gear is to have 14 teeth. Which of the following indexing movement can be used? |
| A. | 2 complete turns and 18 holes in 21 hole circle |
| B. | Parting off |
| C. | 3 complete turns on a 42 hole circle |
| D. | 2 complete turns and 36 holes in 49 hole circle |
| E. | 2 complete turns and 6 holes in 18 hole circle |
| Answer» B. Parting off | |
| 23. |
Last element in the tool signature is |
| A. | nose radius |
| B. | side cutting edge angel |
| C. | side rake angle |
| D. | side relief angle |
| E. | Parting off |
| Answer» B. side cutting edge angel | |
| 24. |
With increasing cutting velocity total time for machining a component |
| A. | decreases |
| B. | increases |
| C. | first decreases and then increases |
| D. | None of the above |
| E. | All of the above |
| Answer» D. None of the above | |
| 25. |
Hobbing process cannot be used to cut |
| A. | Spur gears |
| B. | Helical gears |
| C. | Worm gears |
| D. | Bevel gears |
| E. | All of the above |
| Answer» E. All of the above | |
| 26. |
An important factor to be taken into account while designing a core print is |
| A. | Pouring temperature |
| B. | Buoyancy effect of molten material |
| C. | Type of mould |
| D. | Pattern material |
| E. | Moulding sand characteristics |
| Answer» C. Type of mould | |
| 27. |
The angular clearance provided on dies is usually |
| A. | 7? to 9? |
| B. | 5? to 7? |
| C. | 3? to 5? |
| D. | 10? to 15? |
| Answer» E. | |
| 28. |
A 20 mm diameter international metric thread will have a pitch of |
| A. | 1.25 mm |
| B. | 1 mm |
| C. | 2.5 mm |
| D. | 1.50 mm |
| E. | 2.0 mm |
| Answer» D. 1.50 mm | |
| 29. |
In case of cast iron castings, the shrinkage allowance is |
| A. | 7-10 mm/M |
| B. | 0.1-0.01 mm/M |
| C. | 1-0.1 mm/M |
| D. | 50-75 mm/M |
| E. | 75-100 mm/M |
| Answer» B. 0.1-0.01 mm/M | |
| 30. |
Which of the following welding process uses consumable electrodes |
| A. | TIG welding |
| B. | MIG welding |
| C. | Thermit welding |
| D. | Gas welding |
| E. | Laser welding |
| Answer» C. Thermit welding | |
| 31. |
Gun metal is an alloy containing |
| A. | Copper, lead, tin |
| B. | Copper, nickel, silver |
| C. | Copper, zinc, silver |
| D. | Copper, tin, zinc |
| E. | Copper, tin, silver |
| Answer» E. Copper, tin, silver | |
| 32. |
A drilling machine has spindle speeds from 70 to 800 rpm in eight steps. The fourth speed from the lowest will be |
| A. | 245 rpm |
| B. | 340 rpm |
| C. | 175 rpm |
| D. | 300 rpm |
| E. | 198 rpm |
| Answer» F. | |
| 33. |
For cutting sheet metal the chisel cutting edge is bevelled to an angle of |
| A. | 90? |
| B. | 40? - 45? |
| C. | 30? - 60? |
| D. | Parting off |
| Answer» D. Parting off | |
| 34. |
The power is transmitted by lead screw to the carriage through |
| A. | Rack and pinion a arrangement |
| B. | Gear system |
| C. | Chain drive |
| D. | Pulley drive |
| E. | Half nut |
| Answer» F. | |
| 35. |
Tumber gears are used on lathes to |
| A. | Reduce lead screw speeds |
| B. | Provide automatic motion to cross-slide |
| C. | Provide desired direction of motion to lathe carriage |
| D. | None of the above |
| E. | Ruby |
| Answer» D. None of the above | |
| 36. |
In a turret lathe a pre-selector is a device |
| A. | That is used to decide the operation to be done on a job prior to a specific operation |
| B. | Used for feeding bar to chuck |
| C. | None of above |
| D. | That is used to pre-select the spindle speed for the next operation in progress |
| E. | That is used to select in the job prior to loading |
| Answer» E. That is used to select in the job prior to loading | |
| 37. |
A triple threaded worm is in mesh with a worm wheel of 40 teeth. If the worm revolves at 1200 rpm, the of the worm wheel will be |
| A. | 10 |
| B. | 90 |
| C. | 30 |
| D. | 40 |
| E. | 270 |
| Answer» B. 90 | |
| 38. |
In orthogoual cutting of metals the cutting edge is |
| A. | Perpendicular to the direction of tool travel |
| B. | Perpendicular to the work piece |
| C. | Perpendicular to the shear plane |
| D. | Perpendicular to the axis of cutting tool |
| E. | None of the above |
| Answer» B. Perpendicular to the work piece | |
| 39. |
The chips formed during broaching of steel are |
| A. | closed spirals |
| B. | fragments |
| C. | splinters |
| D. | Parting off |
| E. | snarl |
| Answer» B. fragments | |
| 40. |
A balometer is an element which senses |
| A. | Optical input and delivers thermal output |
| B. | Thermal input |
| C. | Electrical input and delivers thermal output |
| D. | Optical input and delivers electrical output |
| E. | None of the above |
| Answer» B. Thermal input | |
| 41. |
For cutting mild steel the cutting angle of a chisel should be |
| A. | 35? |
| B. | 75? |
| C. | 55? |
| D. | 70? |
| E. | 60? |
| Answer» E. 60? | |
| 42. |
For defining length the standard generally followed is |
| A. | Bar standard |
| B. | End standard |
| C. | Light wave standard |
| D. | Any of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 43. |
The fact that how closely the instrument reading follows the measured variables is termed as |
| A. | Threshold sensitivity |
| B. | Fidelity |
| C. | Precision |
| D. | Accuracy |
| E. | Hysteresis |
| Answer» C. Precision | |
| 44. |
The relief angle for high speed steel tools is usually |
| A. | 30? to 60? |
| B. | 1? to 3? |
| C. | 16? to 30? |
| D. | 3? to 10? |
| E. | 11? to 15? |
| Answer» E. 11? to 15? | |
| 45. |
Quill is |
| A. | Curring a blind key way on an object |
| B. | A steel tube in the head of some machine tools that encloses the bearings and rotating spindle on which are mounted the cutting tools |
| C. | A tool used in milling machine to cut T-slots |
| D. | A holding device used on planers |
| E. | None of above |
| Answer» C. A tool used in milling machine to cut T-slots | |
| 46. |
Buffing is |
| A. | An finishing operation in broaching |
| B. | An etching process |
| C. | The process of bringing out the luster of metal |
| D. | A process of electroplating |
| E. | Covering a metal part with soft materials to prevent damage |
| Answer» D. A process of electroplating | |
| 47. |
Which of the following method cannot be used for manufacturifng internal gears? |
| A. | Die casting |
| B. | Broaching |
| C. | Casting |
| D. | Hobbing |
| E. | Stamping |
| Answer» E. Stamping | |
| 48. |
Slag inclusion in castings is a |
| A. | Internal defect |
| B. | Defect that can be removed by felting |
| C. | Surface defect |
| D. | Superficial defect |
| E. | Moulding defect |
| Answer» D. Superficial defect | |
| 49. |
Crossing in foundry practice is |
| A. | A means for checking the strength of cores |
| B. | A defect in casting that can be removed by heating in a furnace and cooling at show rate. |
| C. | The process of addition of chemicals to the molten metal to improve its fluidity |
| D. | The process of formation of oxides on the surface of the molten metal |
| E. | The process of forcing metal uniformly into the mould |
| Answer» E. The process of forcing metal uniformly into the mould | |
| 50. |
Which of the following gears are not used to transmit motion from one shaft to another shaft at an angle to the first? |
| A. | Worm gears |
| B. | Bevel gears |
| C. | Spur gears |
| D. | Herringbone gears |
| E. | Helical gears |
| Answer» D. Herringbone gears | |