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 steady rest is used |
| A. | During taper turning |
| B. | During threading operation |
| C. | For supporting the bed |
| D. | While cutting heavy and log jobs |
| E. | During finishing operation |
| Answer» E. During finishing operation | |
| 2. |
A strip is |
| A. | A section other than rectangular |
| B. | A sheet less than 6 mm in thickness and 300 mm in width |
| C. | A cold rolled sheet |
| D. | Same as sheet |
| E. | Same as plate |
| Answer» C. A cold rolled sheet | |
| 3. |
While grinding the increase in wheel speed, with constant feed rate, results in |
| A. | glazing of wheel |
| B. | reduction of the chip size |
| C. | Parting off |
| D. | abrasive marks on work piece |
| E. | shining surface |
| Answer» C. Parting off | |
| 4. |
A hermophrodite caliper is |
| A. | Has one leg bent and other straight with a sharp point |
| B. | Has parallel legs |
| C. | Outside caliper |
| D. | Inside caliper |
| E. | Divider |
| Answer» E. Divider | |
| 5. |
In EDM, the tool and work piece are separated by |
| A. | A metal conductor |
| B. | Negative ions |
| C. | Dielectric fluid |
| D. | Positive ions |
| E. | An electrolyte |
| Answer» D. Positive ions | |
| 6. |
Which of the following operation cannot be carried out on a lathe machine? |
| A. | Taper turning |
| B. | Blanking |
| C. | Double start screw cutting |
| D. | Facing |
| E. | Knurling |
| Answer» C. Double start screw cutting | |
| 7. |
A rolling mill is specified by |
| A. | width of rolls |
| B. | pressure exerted |
| C. | gross weight |
| D. | roll diameter |
| E. | Parting off |
| Answer» E. Parting off | |
| 8. |
The limitation of a pneumatically operated automatic control system |
| A. | is complexity of components |
| B. | is costly maintenance |
| C. | Suffers from the transmission lags and slow response |
| D. | None of the above |
| E. | All of the above |
| Answer» D. None of the above | |
| 9. |
Unequal lengths of lips of a twist drill are likely to result in |
| A. | Smooth surface |
| B. | Low power consumption |
| C. | Low heat generation |
| D. | Elliptical hole |
| E. | Oversize hole |
| Answer» F. | |
| 10. |
A cutting tool fails due to |
| A. | crater wear and flank wear |
| B. | crater formation |
| C. | Parting off |
| D. | crater wear and flank wear meeting to cause crumbling of cutting edge |
| Answer» F. | |
| 11. |
Presence of oxygen in copper |
| A. | gives it yellow colour |
| B. | generates blisters on the surface |
| C. | makes it harder |
| D. | Parting off |
| E. | increases electrical conductivity |
| Answer» D. Parting off | |
| 12. |
Accuracy is |
| A. | The repeatability of a measuring process |
| B. | Error of judgment in recording an observation |
| C. | The ability of an instrument to reproduce same reading under identical situations |
| D. | Agreement of the result of a measurement with the true value of the measured quantity |
| E. | None of the above |
| Answer» E. None of the above | |
| 13. |
Which of the following chucking device can be used on lathe? |
| A. | Dog carrier |
| B. | Face plate |
| C. | Collets |
| D. | Mandrel |
| E. | All of the above |
| Answer» F. | |
| 14. |
Which one of the following is not a angle measuring device? |
| A. | Angle iron |
| B. | Angle gauge blocks |
| C. | Combination square |
| D. | Bevel protector |
| E. | Signal bar |
| Answer» B. Angle gauge blocks | |
| 15. |
Honing is used to |
| A. | correct ovality |
| B. | waviness of axis |
| C. | non-parallelism of cylindrical features |
| D. | All of the above |
| E. | Parting off |
| Answer» E. Parting off | |
| 16. |
Which property of sand is measured by a dilatometer? |
| A. | Clay content |
| B. | Permeability |
| C. | Hot strength |
| D. | Fineness |
| E. | Moisture content |
| Answer» D. Fineness | |
| 17. |
Flywheel is not provided in case of |
| A. | manually operated presses |
| B. | crank type presses |
| C. | hydraulic presses |
| D. | All of the above |
| E. | Parting off |
| Answer» D. All of the above | |
| 18. |
In hot blast cupola |
| A. | Temperature is high |
| B. | Melting rate is high |
| C. | Carbon percentage in castings is high |
| D. | Air supplied is preheated |
| E. | None of the above |
| Answer» E. None of the above | |
| 19. |
The gold point temperature is |
| A. | 569?C |
| B. | 863?C |
| C. | 100?C |
| D. | 1000?C |
| E. | 1063?C |
| Answer» F. | |
| 20. |
The process of increasing the cross-section of a job with a reduction in its length is termed |
| A. | Upsetting |
| B. | Parting off |
| C. | Drawing out |
| D. | Cutting |
| Answer» B. Parting off | |
| 21. |
While machining cast iron generally cutting fluid is not required because |
| A. | Cast iron surface is generally rough |
| B. | The cast iron jobs revolves at low speeds |
| C. | Cast iron contains graphite which does not allow temperatures to rise |
| D. | Cast iron contains carbon which cools the job |
| E. | None of the above |
| Answer» D. Cast iron contains carbon which cools the job | |
| 22. |
Shrinkage of cast iron on solidification is nearly |
| A. | 1% |
| B. | 13% |
| C. | Parting off |
| D. | 5% |
| E. | 6.50% |
| Answer» B. 13% | |
| 23. |
In case of grey cast iron the volumetric shrinkage is around |
| A. | 15% |
| B. | 2% |
| C. | 10% |
| D. | 25% |
| E. | 20% |
| Answer» C. 10% | |
| 24. |
Tungsten carbide tipped drill bits are used |
| A. | For smooth surface |
| B. | For slow drilling |
| C. | For drilling on glass, ceramics, etc. |
| D. | Low power consumption |
| E. | For drilling without coolant |
| Answer» D. Low power consumption | |
| 25. |
The minimum section thickness for cast iron castings is |
| A. | 10 mm |
| B. | Parting off |
| C. | 3 mm |
| D. | 1 mm |
| E. | 6 mm |
| Answer» D. 1 mm | |
| 26. |
Range of forging temperature for a mould steel job is |
| A. | 940?C - 1180?C |
| B. | Parting off |
| C. | 800?C - 1150?C |
| D. | 750?C - 1300?C |
| Answer» F. | |
| 27. |
The method of joining metals by means of cast iron alloy whose melting point is below 425?C is known as |
| A. | Non-ferrous welding |
| B. | Soldering |
| C. | Brazing |
| D. | Galvanising |
| E. | Adhesive bonding |
| Answer» C. Brazing | |
| 28. |
Hacksaw used for cutting steel, cast iron, aluminium etc, has the following number of teeth per centimeter |
| A. | Parting off |
| B. | 12 |
| C. | 7 |
| D. | 10 |
| Answer» D. 10 | |
| 29. |
In a cupola the raw material is |
| A. | Steel ingots |
| B. | Pig iron and iron scrap |
| C. | Steel billets |
| D. | Iron ore |
| E. | Cast steel |
| Answer» C. Steel billets | |
| 30. |
A shim is |
| A. | A surface on which bearings are fitted |
| B. | A treatment given to a surface to prevent rusting |
| C. | A kind of shrink fit |
| D. | A thin piece of sheet metal used between mating parts to provide the proper distance |
| E. | A dull corner on a shaft |
| Answer» E. A dull corner on a shaft | |
| 31. |
A steady rest is used for |
| A. | Long jobs |
| B. | Irregular jobs |
| C. | Large diameter jobs |
| D. | Threading jobs |
| E. | All of the above |
| Answer» B. Irregular jobs | |
| 32. |
Resistance wire strain gauge works on the principle |
| A. | That conductivity is directly proportional to load on member |
| B. | Due to elongation length increases and diameter reduces, thereby resistance changes |
| C. | That resistance chanes in proportion to strain on material |
| D. | That resistance of wire changes with load |
| E. | That the resistance of a wire is directly proportional to diameter and inversely proportional to length |
| Answer» C. That resistance chanes in proportion to strain on material | |
| 33. |
If the rake angle on a HSS lathe tool is 25 degrees the materials being machined is |
| A. | Cast iron |
| B. | Aluminium |
| C. | Mild steel |
| D. | Carbon steel |
| E. | High speed steel |
| Answer» C. Mild steel | |
| 34. |
Out of the following materials which one is expected to have highest melting point? |
| A. | Lead |
| B. | Tungsten |
| C. | Palladium |
| D. | Silver |
| E. | Gold |
| Answer» C. Palladium | |
| 35. |
The decibel is |
| A. | Unit of noise level |
| B. | A logarithmic ratio between a measured quantity and a reference quantity |
| C. | Quantity of noise per unit area |
| D. | A logarithmic ratio between a measured quantity and 100 |
| E. | None of the above |
| Answer» C. Quantity of noise per unit area | |
| 36. |
A 30 mm diameter is being machined when the chuck is revolving at 100 rpm. The cutting speed is nearly |
| A. | 50 metres per minute |
| B. | 40 metres per minute |
| C. | 30 metres per minute |
| D. | 60 metres per minute |
| E. | 70 metres per minute |
| Answer» E. 70 metres per minute | |
| 37. |
Work holding faces of a bench vice are |
| A. | Grooved |
| B. | Parting off |
| C. | Serrated |
| D. | Smooth |
| Answer» E. | |
| 38. |
Vacuum is the medium of machining in cases of |
| A. | Ultrasonic machining |
| B. | Laser beam machining |
| C. | Plasma arc machining |
| D. | Electro discharge machining |
| E. | Electron beam machining |
| Answer» F. | |
| 39. |
Paper cutting knives steel contains carbon percentage |
| A. | 0.2 to 0.4% |
| B. | Below 0.2% |
| C. | 1.3 to 1.5% |
| D. | 0.8 to 1% |
| E. | 0.4 to 0.7% |
| Answer» D. 0.8 to 1% | |
| 40. |
Which is the first element of the tool signature? |
| A. | Side relief angle |
| B. | Side rake angle |
| C. | Parting off |
| D. | Back rake angle |
| E. | Nose radius |
| Answer» E. Nose radius | |
| 41. |
Profile of a gear tooth is to be checked. Which one of the following device would you choose? |
| A. | Sine bear |
| B. | Optical projector |
| C. | Optical pyrometer |
| D. | Bench micrometer |
| E. | Telescopic gauge |
| Answer» C. Optical pyrometer | |
| 42. |
If the correctness of profile of a thread is to be checked which instrument would you choose? |
| A. | Screw pitch gauge |
| B. | Telescopic gauge |
| C. | Optical projector |
| D. | Sine bar |
| E. | Bench micrometer |
| Answer» D. Sine bar | |
| 43. |
In metal cutting operations shear angle is defined as the angle |
| A. | Made by the plane of shear with the direction of tool travel |
| B. | Made by the shear plane with the tool axis |
| C. | Made by shear plane with the central plane of work piece |
| D. | None of the above |
| E. | Wood |
| Answer» B. Made by the shear plane with the tool axis | |
| 44. |
In broaching operation the accuracy that can be obtained is of the order of |
| A. | 100 micron |
| B. | 1 micron |
| C. | 0.1 micron |
| D. | 1000 micron |
| E. | 10 micron |
| Answer» C. 0.1 micron | |
| 45. |
In a lathe gear box if first four consecutive speed are 19, 30, 47, 74 rpm, the next speed would be |
| A. | 116 rpm |
| B. | 104 rpm |
| C. | 111 rpm |
| D. | 93 rpm |
| E. | 101 rpm |
| Answer» B. 104 rpm | |
| 46. |
Which of the following test can be used to detect surface cracks in the welding of non-magnetic alloys? |
| A. | Fluorescent test |
| B. | Gamma ray test |
| C. | X-ray test |
| D. | Magnaflux test |
| E. | Any of the above |
| Answer» B. Gamma ray test | |
| 47. |
Coated tools are good at |
| A. | reducing machining cost |
| B. | increasing surface finish on scoled surfaces |
| C. | reducing diffusion wear |
| D. | None of the above |
| E. | Carmetting |
| Answer» D. None of the above | |
| 48. |
Which of the following material has maximum shrinkage during solidification? |
| A. | Parting off |
| B. | Copper |
| C. | Aluminium |
| D. | Steel |
| E. | Cast iron |
| Answer» D. Steel | |
| 49. |
In a 32A 49-H 8V BE grinding wheel the grit size is represented by |
| A. | H |
| B. | 8 |
| C. | 46 |
| D. | BE |
| E. | 32 |
| Answer» D. BE | |
| 50. |
Which one of the following is not included in the combinations set? |
| A. | A centre head |
| B. | A protector |
| C. | Square |
| D. | A rule |
| E. | Short rule |
| Answer» F. | |