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. |
Which of the following material is difficult to be spot welded? |
| A. | Cold rolled mild steel sheet |
| B. | Hot rolled mild steel sheet |
| C. | Stainless steel |
| D. | Copper |
| E. | None of the above |
| Answer» E. None of the above | |
| 2. |
The primary detector in a pressure gauge is usually |
| A. | Bellows |
| B. | Diaphragm |
| C. | Spring |
| D. | Bourdon tube |
| E. | Coil spring |
| Answer» E. Coil spring | |
| 3. |
In gang milling |
| A. | Work is fed into the rotation of cutter |
| B. | A cutter generates two or more plain surface simultaneously |
| C. | Work moves in the opposite direction as the rotating of the cutter |
| D. | Work moves in the same direction as the rotation of the cutter |
| E. | More than one cutter is simultaneously used |
| Answer» F. | |
| 4. |
While using high speed steel tools, the cutting speed will be highest for which of the following steel? |
| A. | Alloy |
| B. | Stainless steel |
| C. | Parting off |
| D. | Medium carbon steel |
| E. | Mild steel |
| Answer» F. | |
| 5. |
Hardness of diamond can be determined by |
| A. | Brinell hardness tester |
| B. | Rockwell hardness tester |
| C. | Vickers hardness tester |
| D. | None of the above |
| E. | Parting off |
| Answer» E. Parting off | |
| 6. |
The standard taper provided on the tapered shank of drills is known as |
| A. | Chapman taper |
| B. | Morse taper |
| C. | Jarno taper |
| D. | Taper No. 1 |
| E. | None of the above |
| Answer» C. Jarno taper | |
| 7. |
A gagger is |
| A. | A tool used in clearing material before welding |
| B. | A, L shaped metal accessory used in floor moulds to support hanging bodies of sand in cope |
| C. | A device for removing foreign particles from sand |
| D. | A tool used in clearing welds |
| E. | A tool used in foundry for cleaning of castings |
| Answer» C. A device for removing foreign particles from sand | |
| 8. |
Which type of gears can be manufactured by extrusion process? |
| A. | Spur gears |
| B. | Bevel gears |
| C. | Helical gears |
| D. | Worm gears |
| E. | Herringbone gears |
| Answer» D. Worm gears | |
| 9. |
Weld spatter is |
| A. | A flux |
| B. | A filler material used in gas welding |
| C. | A welding defect |
| D. | An electrode used in inert atmosphere |
| E. | A filler material used in soldering |
| Answer» D. An electrode used in inert atmosphere | |
| 10. |
Which of the following is basically a polishing operation? |
| A. | Lapping |
| B. | Soft grinding |
| C. | Honing |
| D. | Parting off |
| E. | Buffing |
| Answer» F. | |
| 11. |
If a piece of steel is reheated to a temperature of 200?C to 250?C immediately after quenching, the process is known as |
| A. | Hardening |
| B. | Cyniding |
| C. | Normalizing |
| D. | Tempering |
| E. | Annealing |
| Answer» E. Annealing | |
| 12. |
The process of joining two slip gauges is known as |
| A. | Piercing |
| B. | Wringing |
| C. | Welding |
| D. | Pressing |
| E. | Soldering |
| Answer» C. Welding | |
| 13. |
Cutting speeds for some materials are given as |
| A. | 30 m/min |
| B. | 20 m/min |
| C. | 100 m/min |
| D. | 40 m/min |
| E. | 80 m/min |
| Answer» E. 80 m/min | |
| 14. |
Carbondioxide is |
| A. | Neutral gas |
| B. | Combustible gas |
| C. | Rare gas |
| D. | Inactive gas |
| E. | Ionic gas |
| Answer» E. Ionic gas | |
| 15. |
When a thin job is to be machined on a shaper, in order to prevent warping, which one of the following steps should be taken first? |
| A. | Light cut |
| B. | Heavy cut |
| C. | Single heavy cut |
| D. | Any of the above |
| E. | Vernier caliper |
| Answer» B. Heavy cut | |
| 16. |
It is desired to remove large quantity of material from a job in shortest possible time, on a lathe using high speed steel cutter. Which of the following step will be helpful? |
| A. | Reduce spindle speed and increase depth of cut |
| B. | Increase spindle speed and take light cuts |
| C. | Increase spindle speed and take light cuts |
| D. | At the speed corresponding to cutting speed take roughing cuts of maximum possible depth |
| E. | None of the above |
| Answer» E. None of the above | |
| 17. |
In centreless grinding, work piece is clamped in |
| A. | Chuck |
| B. | Bed |
| C. | Vice |
| D. | Not clamped |
| E. | Collet |
| Answer» E. Collet | |
| 18. |
The commonly used material for thermocouples is |
| A. | Chromel-copper |
| B. | Chromel-alumel |
| C. | Platinum-rhodium |
| D. | Any of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 19. |
When 50 mm rod is turning at a spindle speed of 200 rpm the cutting speed would be |
| A. | 15 - 20 m/min |
| B. | 10 - 12 m/min |
| C. | 12 - 15 m/min |
| D. | 30-35 m/min |
| E. | 20 - 28 m/min |
| Answer» E. 20 - 28 m/min | |
| 20. |
The main advantage of investment casting is |
| A. | It can be conveniently adopted for heavy castings |
| B. | High degree of accuracy and surface finish |
| C. | There is no sophisticated technology involved |
| D. | No special tooling is required |
| E. | Raw materials required are cheap |
| Answer» C. There is no sophisticated technology involved | |
| 21. |
Large size bolt heads are made by |
| A. | Hammering |
| B. | Roll forging |
| C. | Upset-forging |
| D. | Swaging |
| E. | Casting |
| Answer» D. Swaging | |
| 22. |
Which of the following metal is best suited for electro forming? |
| A. | Lead |
| B. | Silver |
| C. | Mild steel |
| D. | Aluminium |
| E. | Zinc |
| Answer» C. Mild steel | |
| 23. |
In climb milling |
| A. | Work moves in same direction as rotation of the cutter |
| B. | Tool climbs on the work piece for cutting operation |
| C. | Cutting takes place in two planes simultaneoudly |
| D. | Work is fed to cutter in lateral direction |
| E. | Work moves in opposite direction as rotation of the cutter |
| Answer» B. Tool climbs on the work piece for cutting operation | |
| 24. |
A crater is a pit formed on |
| A. | flank of tool |
| B. | face of tool |
| C. | surface of work piece |
| D. | None of the above |
| E. | Parting off |
| Answer» C. surface of work piece | |
| 25. |
Which of the following is often used as flux in brazing process? |
| A. | Fevicol |
| B. | Iron dust |
| C. | Borax |
| D. | Ammonia chloride |
| E. | Turpentine |
| Answer» D. Ammonia chloride | |
| 26. |
Shear angle varies with |
| A. | Feed |
| B. | Depth of cut |
| C. | Material of tool |
| D. | Work piece materials and tool geometry |
| E. | Cutting speed |
| Answer» E. Cutting speed | |
| 27. |
Which surfaces are usually 'wrung' together? |
| A. | Gears |
| B. | Slip gauges |
| C. | Threads |
| D. | Drill shanks and collets |
| E. | Bed guides for lathe |
| Answer» C. Threads | |
| 28. |
Discontinuous chips in brittle materials are promoted by |
| A. | low cutting speed and insufficient rake angle |
| B. | coarse feed and low cutting speed |
| C. | low cutting speed and insufficient coolant |
| D. | None of the above |
| E. | Parting off |
| Answer» B. coarse feed and low cutting speed | |
| 29. |
Cyaniding |
| A. | A process of annealing a ferrous alloy |
| B. | A process of case hardening |
| C. | A process of removing carbon from metals |
| D. | A process of hardening and tempering |
| E. | A process used on non-ferrous materials for improving surface quantities |
| Answer» C. A process of removing carbon from metals | |
| 30. |
Heating elements for domestic and industrial electrical applications are made of |
| A. | Babbit metal |
| B. | Invar |
| C. | Delta metal |
| D. | Duralumin |
| E. | Nichrome |
| Answer» F. | |
| 31. |
At what rpm should a lathe be run to give a cutting speed of 25 m/min. When turning a rod of diameter 32 mm. |
| A. | Parting off |
| B. | 160 rpm |
| C. | 100 rpm |
| D. | 200 rpm |
| E. | 250 rpm |
| Answer» F. | |
| 32. |
Necking is |
| A. | Preparation of surface for brazing |
| B. | Hole drilled for riveting |
| C. | Drilling a hole in a plate |
| D. | Machining a groove around cylindrical shaft |
| E. | Initial spot welding to position jobs |
| Answer» E. Initial spot welding to position jobs | |
| 33. |
Straight fluted drills are used for |
| A. | Amorphous materials |
| B. | Ferrous materials |
| C. | Brass and soft materials |
| D. | Very hard materials |
| E. | Brittle materials |
| Answer» D. Very hard materials | |
| 34. |
Green colour on a pattern indicates |
| A. | Seats for loose core prints |
| B. | Fillets |
| C. | Surface to be machined |
| D. | Core prints |
| E. | Surface to be left unmachined |
| Answer» B. Fillets | |
| 35. |
In a machining operation on free cutting mild steel the cutting speed is mentioned as 70 m/min. What should be material of cutting tool |
| A. | Carbon steel |
| B. | Wood |
| C. | High speed steel |
| D. | Carbide |
| E. | Diamond |
| Answer» E. Diamond | |
| 36. |
While using HSS tools on a lathe, cutting speed will be maximum when machining |
| A. | Mild steel |
| B. | Cast iron |
| C. | High carbon steel |
| D. | High speed steel |
| E. | Aluminium |
| Answer» F. | |
| 37. |
For aluminium, the cutting speed on lathe is around |
| A. | 150 m/min |
| B. | 300 m/min |
| C. | 100 m/min |
| D. | 1000 m/min |
| E. | 30 m/min |
| Answer» C. 100 m/min | |
| 38. |
For soft steel the cutting speed for lathe operations is around |
| A. | 100 m/min |
| B. | 30 m/min |
| C. | 150 m/min |
| D. | 300 m/min |
| E. | 1000 m/min |
| Answer» C. 150 m/min | |
| 39. |
A pair of tumbler gears is used in |
| A. | Milling machine |
| B. | Shaper |
| C. | Capstan lathe |
| D. | Grinding machines |
| E. | Centre lathe |
| Answer» F. | |
| 40. |
Suitable change wheels for cutting 17 T.P.I. on 4 T.P.I. lead screw lathe are |
| A. | 10 to 65 |
| B. | 15 to 85 |
| C. | 20 to 85 |
| D. | 30 to 105 |
| E. | None of the above |
| Answer» D. 30 to 105 | |
| 41. |
Type of gears used in electric switch gear is |
| A. | Bevel gears |
| B. | Herringbone gears |
| C. | Gears are not used in switch gear |
| D. | Helical gears |
| E. | Spiral gears |
| Answer» D. Helical gears | |
| 42. |
For simple turning operation of lathe, the cutting speed is specified as 70 metres per minute. The cutting tool may be expected to be |
| A. | Carbide |
| B. | Higher speed steel |
| C. | Carbon steel |
| D. | Mild steel |
| E. | Diamond |
| Answer» B. Higher speed steel | |
| 43. |
Nitrided steel is used for gears where |
| A. | Variable load operation is desired |
| B. | Low speed operation is desired |
| C. | Varying stresses are expected on teeth |
| D. | High hardness is desired on teeth |
| E. | Variable speed operation is desired |
| Answer» E. Variable speed operation is desired | |
| 44. |
While using high speed steel tools on lathe the speed of chuck will be lowest while machining |
| A. | White metal |
| B. | Aluminium |
| C. | Brass |
| D. | Copper |
| E. | Cast iron |
| Answer» F. | |
| 45. |
Stub tooth are cut on gears |
| A. | To improve transmission efficiency |
| B. | To reduce centre distance between shafts |
| C. | None of above |
| D. | To reduce frictional torque |
| E. | Subjected to shock and vibration |
| Answer» F. | |
| 46. |
Aluminium gears are generally used in |
| A. | Compressors |
| B. | Speed reducers |
| C. | Instruments |
| D. | Worm wheels |
| E. | None of the above |
| Answer» D. Worm wheels | |
| 47. |
Gear cutter No. 1 for cutting gears on milling machine is used for |
| A. | 17 to 20 teeth |
| B. | 135 to 150 teeth |
| C. | 12 to 13 teeth |
| D. | Racks only |
| E. | 55 to 120 teeth |
| Answer» C. 12 to 13 teeth | |
| 48. |
Chip breakers are used while machining |
| A. | ductile materials |
| B. | brittle materials |
| C. | Both (A) and (B) |
| D. | None of the above |
| E. | Parting off |
| Answer» B. brittle materials | |
| 49. |
The backlash between gears is expressed in terms of |
| A. | Difference between addendum and dedendum |
| B. | The difference between PCD of two gears |
| C. | The actual gear width on pitch circle minus the standard gear width for given number of teeth on gear |
| D. | Clearance between faces of the mating gears |
| E. | None of the above |
| Answer» E. None of the above | |
| 50. |
Point angle of drill is usually more while drilling |
| A. | Slate |
| B. | Marble |
| C. | Hard alloys |
| D. | Soft cast iron |
| E. | Mild steel |
| Answer» D. Soft cast iron | |