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. |
Line imperfection in a crystal is called |
| A. | Schottky defect |
| B. | Frenkel defect |
| C. | Edge dislocation |
| D. | Any of the above |
| E. | None of the above |
| Answer» D. Any of the above | |
| 2. |
Bush bearings is |
| A. | Phosphor bronze |
| B. | Aluminium bronze |
| C. | Mild steel |
| D. | White metal alloy |
| E. | None of the above |
| Answer» E. None of the above | |
| 3. |
The modulus of elasticity E, the bulk modulus of elasticity K and the Poisson's ratio are related by the relation |
| A. | K = (1 + |
| B. | E = K (1 - |
| C. | E = 3K (1 - 2 |
| D. | E = K (2 + |
| E. | E = 2K (1 + |
| Answer» D. E = K (2 + | |
| 4. |
To chck the performance of a substance in deep drawing, the test usually conducted is |
| A. | Charpy test |
| B. | Fatigue test |
| C. | Cupping test |
| D. | Tensile test |
| E. | Izod test |
| Answer» D. Tensile test | |
| 5. |
If a solid cube is subjected to equal tensile stresses on all its faces the volumetric strain is n times the linear strain, where |
| A. | n = 1 |
| B. | n = 2 |
| C. | n = 6 |
| D. | n = 3 |
| E. | n = 9 |
| Answer» F. | |
| 6. |
Case hardening |
| A. | Is done to get a soft ductile interior with a very hard surface |
| B. | Is done to induce hardness in the core of materials |
| C. | Is followed by tempering |
| D. | Is allowed by carburizing |
| E. | Is preceded by tempering |
| Answer» B. Is done to induce hardness in the core of materials | |
| 7. |
Materials in order of reducing electrical conductivity are |
| A. | Aluminium, Silver, Gold, Copper |
| B. | Gold, Silver, Copper, Aluminium |
| C. | Copper, Silver, Gold,Aluminium |
| D. | Silver, Copper, Gold, Aluminium |
| E. | None of the above |
| Answer» E. None of the above | |
| 8. |
Which of the following is the characteristic of ceramic materials? |
| A. | Malleability and ductility |
| B. | Hardness and brittleness |
| C. | Elasticity and plasticity |
| D. | Porosity and flexibility |
| E. | None of the above |
| Answer» C. Elasticity and plasticity | |
| 9. |
High ratio of surface to mass tend to |
| A. | Produce smaller depths of hardening |
| B. | Produce non-uniformity in hardness on surface |
| C. | Produce only chilled surfaces |
| D. | Produce surface defects |
| E. | Produce greater depth of hardening |
| Answer» F. | |
| 10. |
The critical points for steels |
| A. | Change the chemical composition of steel |
| B. | Cause change in physical properties |
| C. | Indicate the minimum temperature below which structural changes in steel are not possible |
| D. | May change in number on heating or cooling |
| E. | Occur at same temperature for all steels |
| Answer» C. Indicate the minimum temperature below which structural changes in steel are not possible | |
| 11. |
Sheradising process is used for |
| A. | Cold working on metals |
| B. | Heat treatment of steels |
| C. | Machining metals |
| D. | Heat treatment of high speed steels |
| E. | Surface coating |
| Answer» F. | |
| 12. |
Selenium is |
| A. | Intrinsic semi-conductor |
| B. | Extrinsic semi-conductor |
| C. | P-type semi-conductor |
| D. | N-type semi-conductor |
| E. | None of the above |
| Answer» B. Extrinsic semi-conductor | |
| 13. |
Phenol and formaldehyde are polymerised to a resultant product known as |
| A. | PVC |
| B. | Bakelite |
| C. | Polyester |
| D. | None of the above |
| E. | Semi-conductors |
| Answer» C. Polyester | |
| 14. |
Toughness of a material means |
| A. | Stress relieving |
| B. | Softening |
| C. | Machinability |
| D. | Strength |
| E. | Fatigue resistance |
| Answer» E. Fatigue resistance | |
| 15. |
The main constituent of dynamite is |
| A. | Sulphur |
| B. | Oxygen |
| C. | Nitroglycerine |
| D. | Potassium chlorate |
| E. | Sodium nitrate |
| Answer» D. Potassium chlorate | |
| 16. |
The process of pulling a rod through series of decreasing diameters is known as |
| A. | Wire drawing |
| B. | Metal spinning |
| C. | Trimming |
| D. | Staking |
| E. | Stretch forming |
| Answer» B. Metal spinning | |
| 17. |
Nichrome are alloys of |
| A. | Nickel, chromium and aluminium |
| B. | Nickel, chromium |
| C. | Nickel, chromium and silver |
| D. | Nickel, chromium and iron |
| E. | Nickel, chromium and copper |
| Answer» D. Nickel, chromium and iron | |
| 18. |
The machine used for determining tensile strength of steel is |
| A. | Hydraulic jack |
| B. | Hydraulic press |
| C. | Mechanical press |
| D. | Universal testing machine |
| E. | None of the above |
| Answer» E. None of the above | |
| 19. |
Crystal structure of a material is generally examined by |
| A. | Microscope |
| B. | Naked eye |
| C. | Spectroscope techniques |
| D. | X-rays and electron diffraction |
| E. | Optical microscope |
| Answer» E. Optical microscope | |
| 20. |
Grey iron |
| A. | Has low ductility |
| B. | Breaks with appreciable distortion |
| C. | Has brittleness |
| D. | Low compression strength |
| E. | None of the above |
| Answer» B. Breaks with appreciable distortion | |
| 21. |
The process of polymerisation is associated with |
| A. | Thermo-plastic |
| B. | High speed steel |
| C. | Cast iron |
| D. | Non-ferrous material |
| E. | Non-metallic materials |
| Answer» B. High speed steel | |
| 22. |
The property by which a body returns to its original shape after the removal to the load is called |
| A. | Softness |
| B. | Plasticity |
| C. | Elasticity |
| D. | Ductility |
| E. | Malleability |
| Answer» D. Ductility | |
| 23. |
The phenomenon of materials in which slow extension of materials takes place with the time at constant load is known as |
| A. | Malleability |
| B. | Elasticity |
| C. | Plasticity |
| D. | Creep |
| E. | Ductility |
| Answer» E. Ductility | |
| 24. |
Trimming is a process associated with |
| A. | Machining of metals |
| B. | Press work |
| C. | Electro plating |
| D. | Polishing of metals |
| E. | Forging |
| Answer» F. | |
| 25. |
Plastic deformation which is carried out in a temperature region and over a time interval such that the strain hardening is not relieved is known as |
| A. | Hot work |
| B. | Cold work |
| C. | Annealing |
| D. | Bauschinger effect |
| E. | None of the above |
| Answer» C. Annealing | |
| 26. |
Which process is different from the others |
| A. | Drop forging |
| B. | Cold extruding |
| C. | Sand blasting |
| D. | Short peening |
| E. | Cold heading |
| Answer» B. Cold extruding | |
| 27. |
The phenomenon of weld decay is found in |
| A. | Cast iron |
| B. | Bronze |
| C. | Brass |
| D. | Gun metal |
| E. | Stainless steel |
| Answer» F. | |
| 28. |
Which one is different from the remaining |
| A. | Flame hardening |
| B. | Electroplating |
| C. | Cynding |
| D. | Nitriding |
| E. | Pack carburizing |
| Answer» C. Cynding | |
| 29. |
The ability of a material to absorb energy in the plastic range is known as |
| A. | Fatigue strength |
| B. | Resilience |
| C. | Toughness |
| D. | Hardness |
| E. | Creep |
| Answer» D. Hardness | |
| 30. |
The ability of material to absorb energy when deformed elastically and to return it when unloaded is called |
| A. | Resilience |
| B. | Fatigue strength |
| C. | Creep |
| D. | Toughness |
| E. | Hardness |
| Answer» B. Fatigue strength | |
| 31. |
Electron with energy level of 2 MeV is considered as |
| A. | Fast electron |
| B. | There is no consideration as such |
| C. | Dead slow electron |
| D. | Slow electron |
| E. | Super-fast electron |
| Answer» B. There is no consideration as such | |
| 32. |
Most of the energy expended in deforming a metal by cold working is |
| A. | Utilised in overcoming deformation stresses |
| B. | Utilised in deforming the metal |
| C. | Converted into heat |
| D. | Consumed in developing internal stresses |
| E. | None of the above |
| Answer» D. Consumed in developing internal stresses | |
| 33. |
The ability of a tool to resist softening at high temperatures is known as |
| A. | Super hardness |
| B. | Red hardness |
| C. | Extended hardness |
| D. | Double hardness |
| E. | None of the above |
| Answer» C. Extended hardness | |
| 34. |
Which process is used for joining parts or materials? |
| A. | Extruding |
| B. | Tumbling |
| C. | Swaging |
| D. | Parkerizing |
| E. | Sintering |
| Answer» F. | |
| 35. |
In reinforced conccrete, steel rods are used to increase |
| A. | Tensile strength |
| B. | Compressive strength |
| C. | Shear strength |
| D. | None of the above |
| E. | Semi-conductors |
| Answer» B. Compressive strength | |
| 36. |
Dies for drawing are generally made of |
| A. | Cast iron |
| B. | Mild steel |
| C. | High carbon steel |
| D. | Stainless steel |
| E. | None of the above |
| Answer» F. | |
| 37. |
Steel pipes are generally manufactured by |
| A. | Forging process |
| B. | Machining process |
| C. | Extrusion process |
| D. | Cold working process |
| E. | Electroforming process |
| Answer» D. Cold working process | |
| 38. |
In a glass metal seal the two components must match with respect to their |
| A. | Fatigue strength |
| B. | Hardness |
| C. | Semi-conductors |
| D. | Ductility |
| E. | Thermal expansion |
| Answer» F. | |
| 39. |
Which type of thermostat is generally used in applicances with heating elements? |
| A. | Bimetallic |
| B. | Magnetic |
| C. | Clad metal |
| D. | Ferromagenetic |
| E. | None of the above |
| Answer» B. Magnetic | |
| 40. |
The theory of failure generally applied in case of brittle materials is |
| A. | Maximum shear stress theory |
| B. | Maximum principal stress theory |
| C. | Theory of superposition |
| D. | Maximum strain energy theory |
| E. | Maximum shear strain energy theory |
| Answer» C. Theory of superposition | |
| 41. |
The common household glass is |
| A. | Lead glass |
| B. | Borosilicate glass |
| C. | Semi-conductors |
| D. | Soda lime glass |
| E. | High silica glass |
| Answer» E. High silica glass | |
| 42. |
Some engineering materials are made up of more than one phase, with different mechanical properties, such materials are known as |
| A. | Discontinuous |
| B. | Brittle |
| C. | Plastic |
| D. | Heterogeneous |
| E. | None of the above |
| Answer» E. None of the above | |
| 43. |
Steel balls for ball bearings are hardened to |
| A. | 100 VPN |
| B. | 400-700 VPN |
| C. | 700-800 VPN |
| D. | 150-200 VPN |
| E. | 200-400 VPN |
| Answer» D. 150-200 VPN | |
| 44. |
The essential gradient of any hardened steel is |
| A. | Martensite |
| B. | Cementite |
| C. | Pearlite |
| D. | Carbon |
| E. | Austenite |
| Answer» B. Cementite | |
| 45. |
The defect blow hole in castings is caused due to |
| A. | Hard ramming |
| B. | Excessive moisture |
| C. | Improper venting |
| D. | Excessive carbouacious material |
| E. | Any of the above |
| Answer» F. | |
| 46. |
The depth hardness of steel increases by the addition of |
| A. | Silicon |
| B. | Nickel |
| C. | Manganese |
| D. | Sulphur |
| E. | Chromium |
| Answer» F. | |
| 47. |
Chromium when added as an alloying element to steels |
| A. | Increases corrosion resistance |
| B. | Increases red hardness |
| C. | Refines the grain structure |
| D. | Improves mechanical properties |
| E. | Softens the material |
| Answer» B. Increases red hardness | |
| 48. |
All of the following are destructive tests on materials EXCEPT |
| A. | Charpy test |
| B. | Tensile test |
| C. | Cupping test |
| D. | Fatigue test |
| E. | Shore's scleroscope hardness test |
| Answer» F. | |
| 49. |
If steel is quenched in oil the structure obtained is |
| A. | Acicular |
| B. | Troosite |
| C. | Pearlite |
| D. | Sorbite |
| E. | Martensite |
| Answer» C. Pearlite | |
| 50. |
Shot blasting is the process for the cleaning of |
| A. | Pattern |
| B. | Cores |
| C. | Moulding sand |
| D. | Welded components |
| E. | Castings |
| Answer» F. | |