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. |
%_The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment._% |
| A. | 0.2 |
| B. | 0.4 |
| C. | 0.6 |
| D. | 0.8 |
| Answer» B. 0.4 | |
| 2. |
%_Alloy powder manufactured by the following process have spherical shapes._% |
| A. | Electrochemical deposition |
| B. | Gaseous reduction |
| C. | Atomisation |
| D. | Mechanical attrition |
| Answer» D. Mechanical attrition | |
| 3. |
%_Impeller & casing of centrifugal pump handling corrosive liquid and frequently running under cavitation condition is most prone to __________ corrosion._% |
| A. | Uniform |
| B. | Oxygen diffusion |
| C. | Pitting |
| D. | Inter-granular |
| Answer» D. Inter-granular | |
| 4. |
%_Heat required to raise the temperature of a body by 1 °C is called its_% |
| A. | Heat capacity |
| B. | Specific heat capacity |
| C. | Thermal conductivity |
| D. | Water equivalent |
| Answer» B. Specific heat capacity | |
| 5. |
%_The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/ cm²._% |
| A. | 273.15 |
| B. | 225.65 |
| C. | 100.03 |
| D. | 373.15 |
| Answer» C. 100.03 | |
| 6. |
%_The value of y = cp/cv. at < 500°C for air & most common gases can be safely assumed to be_% |
| A. | 0.8 |
| B. | 1 |
| C. | 1.4 |
| D. | 1.8 |
| Answer» D. 1.8 | |
| 7. |
%_Fog is an example of colloidal system of_% |
| A. | Solid dispersed in gas |
| B. | Solid dispersed in liquid |
| C. | Liquid dispersed in gas |
| D. | Gas dispersed in liquid |
| Answer» D. Gas dispersed in liquid | |
| 8. |
%_Copper deposits are found in India at the following location:_% |
| A. | Kudremukh |
| B. | Kolar |
| C. | Khetri |
| D. | Ramagundam |
| Answer» D. Ramagundam | |
| 9. |
%_Which of the following is an acidic constituent of B.F. slag ?_% |
| A. | SiO‚ÇÇ |
| B. | FeO |
| C. | MgO |
| D. | CaO |
| Answer» B. FeO | |
| 10. |
%_Suitability of steel for its use in cable is judged by its strength in_% |
| A. | Tension |
| B. | Compression |
| C. | Torsion |
| D. | Shear |
| Answer» B. Compression | |
| 11. |
%_The tensile load-elongation curve of a metal does not describe_% |
| A. | Work hardening |
| B. | Yield stress |
| C. | Anisotropy index |
| D. | Necking strain |
| Answer» D. Necking strain | |
| 12. |
%_Dew point temperature always gives an indication of the __________ of the moist air._% |
| A. | Dryness |
| B. | Moisture content |
| C. | Coolness |
| D. | Latent heat |
| Answer» C. Coolness | |
| 13. |
%_Drills are usually made of_% |
| A. | Cermets |
| B. | High speed steel |
| C. | Alloy steel |
| D. | Tungsten carbide |
| Answer» C. Alloy steel | |
| 14. |
%_The hardness of a grinding wheel is specified by the_% |
| A. | Alphabetical letter |
| B. | Rockwell hardness number |
| C. | Brinell hardness number |
| D. | None of these |
| Answer» B. Rockwell hardness number | |
| 15. |
%_Which one of the following is incombustible ?_% |
| A. | H‚ÇÇ |
| B. | CCl‚ÇÑ |
| C. | C‚ÇÇH‚ÇÇ |
| D. | S |
| Answer» C. C‚Äö√á√áH‚Äö√á√á | |
| 16. |
%_Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of_% |
| A. | Hydrochloric acid |
| B. | Methyl alcohol |
| C. | Formic acid |
| D. | Nitric acid |
| Answer» E. | |
| 17. |
%_For grinding of softer materials, the grinding wheel should have __________ grain size._% |
| A. | Finer |
| B. | Coarser |
| C. | Medium |
| D. | Any type of |
| Answer» C. Medium | |
| 18. |
%_Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils?_% |
| A. | Elaiden test |
| B. | Reichart-Meissl value test |
| C. | Henter value test |
| D. | Iodine value test |
| Answer» B. Reichart-Meissl value test | |
| 19. |
%___________ property of a material is determined by the Herbert Pendulum device._% |
| A. | Hardness |
| B. | Tensile |
| C. | Toughness |
| D. | Compressive |
| Answer» B. Tensile | |
| 20. |
%_In the blast furnace, incorporation of water vapour in the blast gives the following effect._% |
| A. | Increases the reducing potential of the gas |
| B. | Increases the flame temperature |
| C. | No significant change occurs |
| D. | Increases the hydrogen content in the metal |
| Answer» B. Increases the flame temperature | |
| 21. |
%_Auto collimator is used to check_% |
| A. | Flatness |
| B. | Angle |
| C. | Rotor balancing |
| D. | Roughness |
| Answer» C. Rotor balancing | |
| 22. |
%_Colour comparator is used to measure the_% |
| A. | PH value |
| B. | Electrode potential |
| C. | Colour intensity |
| D. | None of these |
| Answer» B. Electrode potential | |
| 23. |
%_Endurance is a measure of fatigue limit of a metal. Fatigue crack in nitrided machine parts originates_% |
| A. | At the surface |
| B. | Within the core |
| C. | Just below the surface |
| D. | Anywhere on the surface |
| Answer» C. Just below the surface | |
| 24. |
%_For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be __________ toys._% |
| A. | 250 |
| B. | 500 |
| C. | 1000 |
| D. | 3000 |
| Answer» C. 1000 | |
| 25. |
%_All modes of heat transfer i.e., conduction, convection & radiation occur in case of the_% |
| A. | Condensation of steam in a partial condenser |
| B. | Boiler furnace |
| C. | Insulated pipe car raying high pressure steam |
| D. | None of these |
| Answer» C. Insulated pipe car raying high pressure steam | |
| 26. |
%_Which of the following rays has the least wavelength?_% |
| A. | Ultraviolet rays |
| B. | Infrared rays |
| C. | Cosmic rays |
| D. | X-rays |
| Answer» D. X-rays | |
| 27. |
%_Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography._% |
| A. | X-rays |
| B. | Γ-rays |
| C. | Α-rays |
| D. | Β-rays |
| Answer» C. ≈í√´-rays | |
| 28. |
%_Which of the following materials has the poorest electrical conductivity?_% |
| A. | Carbon |
| B. | Aluminium |
| C. | Silver |
| D. | Stainless steel |
| Answer» B. Aluminium | |
| 29. |
%_Cathodic protection is widely used in controlling corrosion in_% |
| A. | High pressure vessels |
| B. | Marine structure & underground pipelines |
| C. | Overhead fuel gas pipelines |
| D. | Overhead water pipelines |
| Answer» C. Overhead fuel gas pipelines | |
| 30. |
%_A high pressure boiler generates steam at a pressure greater than __________ kg/cm² ._% |
| A. | 10 |
| B. | 30 |
| C. | 50 |
| D. | 80 |
| Answer» E. | |
| 31. |
%_The dew point of moist air becomes __________ with decrease in its relative humidity._% |
| A. | Less than the wet bulb temperature |
| B. | More than the wet bulb temperature |
| C. | More than the dry bulb temperature |
| D. | Equal to wet bulb temperature |
| Answer» B. More than the wet bulb temperature | |
| 32. |
%_Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?_% |
| A. | Anodising |
| B. | Tempering |
| C. | Carburising |
| D. | Annealing |
| Answer» C. Carburising | |
| 33. |
%_Which of the following does not lower the surface tension of liquids ?_% |
| A. | Fat |
| B. | Soap |
| C. | Detergent |
| D. | Surfactant |
| Answer» B. Soap | |
| 34. |
%_Blast furnace slag is mainly molten_% |
| A. | Sand |
| B. | Magnesium silicate |
| C. | Calcium silicate |
| D. | Iron pyrite |
| Answer» D. Iron pyrite | |
| 35. |
%_Isotropic materials have the same __________ in all directions._% |
| A. | Induced stresses |
| B. | Density |
| C. | Elastic properties |
| D. | Thermal properties |
| Answer» D. Thermal properties | |
| 36. |
%_Steel is welded using the __________ flame._% |
| A. | Carburising |
| B. | Neutral |
| C. | Oxidising |
| D. | All of the above |
| Answer» C. Oxidising | |
| 37. |
%_Stainless steel is welded with difficulty because of_% |
| A. | Its high melting temperature |
| B. | Chances of cracking |
| C. | Oxide film formation |
| D. | Chromium carbide formation |
| Answer» D. Chromium carbide formation | |
| 38. |
%_The hydraulic radius of a circular pipe of diameter 'd' flowing full is_% |
| A. | D/4 |
| B. | D/2 |
| C. | 2d/3 |
| D. | D/3 |
| Answer» B. D/2 | |
| 39. |
%_During sensible heating of humid air_% |
| A. | Relative humidity increases |
| B. | Dew point remains constant |
| C. | Dry bulb & wet bulb temperature increases |
| D. | Both 'b' & 'c' |
| Answer» E. | |
| 40. |
%_Isotropic materials have the same __________ in all the directions._% |
| A. | Thermal properties |
| B. | Elastic properties |
| C. | Stresses |
| D. | All of the above |
| Answer» C. Stresses | |
| 41. |
%_Vernier calipers can not be used to measure the_% |
| A. | I.D. & O.D. of the shaft |
| B. | Thickness of parts |
| C. | Depth of holes |
| D. | Clearance between two mating surfaces |
| Answer» E. | |
| 42. |
%_In a furnace with heating element temperature at 1700°C, the dominant machanism of heat transfer will be_% |
| A. | Conduction |
| B. | Radiation |
| C. | Natural convection |
| D. | Forced convection |
| Answer» C. Natural convection | |
| 43. |
%_An ideal fluid is_% |
| A. | Viscous & incompressible |
| B. | Non-viscous & compressible |
| C. | Non-viscous & incompressible |
| D. | Viscous & compressible |
| Answer» D. Viscous & compressible | |
| 44. |
%_Killed steels_% |
| A. | Are free from oxygen |
| B. | Contain not even traces of sulphur & phosphorous |
| C. | Are produced by L.D. process only |
| D. | Contain minimum impurity level |
| Answer» B. Contain not even traces of sulphur & phosphorous | |
| 45. |
%_LASER_% |
| A. | Stands for Light Amplification by Stimulated Emission of Radiation |
| B. | Has the same intensity as visible light |
| C. | Can't be used for cutting metals |
| D. | None of these |
| Answer» B. Has the same intensity as visible light | |
| 46. |
%_Which of the following parameters is actually measured during tensile testing of a specimen using Universal testing machine?_% |
| A. | Load & elongation |
| B. | Engineering stress & strain |
| C. | True stress & strain |
| D. | Poisson's ratio & Young's modulus |
| Answer» B. Engineering stress & strain | |
| 47. |
%_LVDT used for displacement measurement is a/an __________ transducer._% |
| A. | Passive |
| B. | Active |
| C. | Capacitive |
| D. | None of these |
| Answer» B. Active | |
| 48. |
%_Which of the following if present in iron ore, enhances its value?_% |
| A. | Alumina |
| B. | Alkali oxide |
| C. | Lime & Magnesia |
| D. | None of these |
| Answer» D. None of these | |
| 49. |
%_The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their_% |
| A. | Equivalent weight |
| B. | (equivalent weight)² |
| C. | Molecular weight |
| D. | (molecular weight)² |
| Answer» B. (equivalent weight)¬¨‚⧠| |
| 50. |
%_Which of the following is resistant to the action of both heat & chemicals?_% |
| A. | Boro silicate glass |
| B. | Silica glass |
| C. | Soda lime glass |
| D. | None of these |
| Answer» B. Silica glass | |