MCQOPTIONS
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MCQOPTIONS
This section includes 50 Mcqs, each offering curated multiple-choice questions to sharpen your ENGINEERING SERVICES EXAMINATION (ESE) knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The portion of the blast furnace below its widest cross-section is called |
| A. | Hearth |
| B. | Stack |
| C. | Bosh |
| D. | Throat |
| Answer» D. Throat | |
| 2. |
The transistor is made of |
| A. | Silver |
| B. | Gold |
| C. | Copper |
| D. | Germanium |
| Answer» E. | |
| 3. |
Brass is an alloy of |
| A. | Copper and zinc |
| B. | Copper and tin |
| C. | Copper, tin and zinc |
| D. | None of these |
| Answer» B. Copper and tin | |
| 4. |
An eutectoid steel consists of |
| A. | Wholly pearlite |
| B. | Wholly austenite |
| C. | Pearlite and ferrite |
| D. | Pearlite and cementite |
| Answer» B. Wholly austenite | |
| 5. |
Steel contains |
| A. | 80% or more iron |
| B. | 50% or more iron |
| C. | Alloying elements like chromium, tungsten nickel and copper |
| D. | Elements like phosphorus, sulphur and silicon in varying quantities |
| Answer» C. Alloying elements like chromium, tungsten nickel and copper | |
| 6. |
A small percentage of boron is added to steel in order to |
| A. | Increase hardenability |
| B. | Reduce machinability |
| C. | Increase wear resistance |
| D. | Increase endurance strength |
| Answer» B. Reduce machinability | |
| 7. |
Ball bearings are, usually, made from |
| A. | Low carbon steel |
| B. | High carbon steel |
| C. | Medium carbon steel |
| D. | Chrome steel |
| Answer» E. | |
| 8. |
Connecting rod is, usually, made from |
| A. | Low carbon steel |
| B. | High carbon steel |
| C. | Medium carbon steel |
| D. | High speed steel |
| Answer» D. High speed steel | |
| 9. |
Sulphur in steel |
| A. | Acts as deoxidiser |
| B. | Reduces the grain size |
| C. | Decreases tensile strength and hardness |
| D. | Lowers the toughness and transverse ductility |
| Answer» E. | |
| 10. |
The tensile strength of wrought iron is maximum |
| A. | Along the lines of slag distribution |
| B. | Perpendicular to lines of slag distribution |
| C. | Uniform in all directions |
| D. | None of the above |
| Answer» B. Perpendicular to lines of slag distribution | |
| 11. |
The purpose of heat treatment is to |
| A. | Relieve the stresses set up in the material after hot or cold working |
| B. | Modify the structure of the material |
| C. | Change grain size |
| D. | Any one of these |
| Answer» E. | |
| 12. |
Cemented carbide tools are not found to be suitable for cutting |
| A. | Brass |
| B. | Cast iron |
| C. | Aluminium |
| D. | Steel |
| Answer» E. | |
| 13. |
Large forgings, crank shafts, axles normally contain carbon up to |
| A. | 0.05 to 0.20% |
| B. | 0.20 to 0.45% |
| C. | 0.45 to 0.55% |
| D. | 0.55 to 1.0% |
| Answer» D. 0.55 to 1.0% | |
| 14. |
Which of the following has a fine gold colour and is used for imitation jewellery? |
| A. | Silicon bronze |
| B. | Aluminium bronze |
| C. | Gun metal |
| D. | Babbitt metal |
| Answer» C. Gun metal | |
| 15. |
White metal contains |
| A. | 63 to 67% nickel and 30% copper |
| B. | 88% copper and 10% tin and rest zinc |
| C. | Alloy of tin, lead and cadmium |
| D. | Silver and chromium |
| Answer» D. Silver and chromium | |
| 16. |
Shock resisting steels should have |
| A. | Low wear resistance |
| B. | Low hardness |
| C. | Low tensile strength |
| D. | Toughness |
| Answer» E. | |
| 17. |
Chromium when added to steel _________ the tensile strength. |
| A. | Does not effect |
| B. | Decreases |
| C. | Increases |
| D. | None of these |
| Answer» D. None of these | |
| 18. |
The compressive strength of cast iron is __________that of its tensile strength. |
| A. | Equal to |
| B. | Less than |
| C. | More than |
| D. | None of these |
| Answer» D. None of these | |
| 19. |
Hardness of lower bainite (tempered martensite) is about |
| A. | RC 65 |
| B. | RC 48 |
| C. | RC 57 |
| D. | RC 80 |
| Answer» D. RC 80 | |
| 20. |
In compression, a prism of brittle material will break |
| A. | By forming a bulge |
| B. | By shearing along oblique plane |
| C. | In direction perpendicular to application of load |
| D. | By crushing into thousands of pieces |
| Answer» C. In direction perpendicular to application of load | |
| 21. |
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is |
| A. | Silver metal |
| B. | Duralumin |
| C. | Hastelloy |
| D. | Invar |
| Answer» E. | |
| 22. |
Which of the following alloys does not have copper as one of the constituents? |
| A. | Delta metal |
| B. | Monel metal |
| C. | Constantan |
| D. | Nichrome |
| Answer» E. | |
| 23. |
Wrought iron is |
| A. | Hard |
| B. | High in strength |
| C. | Highly resistant to corrosion |
| D. | Heat treated to change its properties |
| Answer» D. Heat treated to change its properties | |
| 24. |
Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal? |
| A. | Silicon |
| B. | Sulphur |
| C. | Manganese |
| D. | Phosphorus |
| Answer» B. Sulphur | |
| 25. |
Pig iron is the name given to |
| A. | Raw material for blast furnace |
| B. | Product of blast furnace made by reduction of iron ore |
| C. | Iron containing huge quantities of carbon |
| D. | Iron in molten form in the ladles |
| Answer» C. Iron containing huge quantities of carbon | |
| 26. |
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is |
| A. | 770°C |
| B. | 910°C |
| C. | 1050°C |
| D. | Below recrystallization temperature |
| Answer» B. 910°C | |
| 27. |
The lower critical temperature |
| A. | Decreases as the carbon content in steel increases |
| B. | Increases as the carbon content in steel increases |
| C. | Is same for all steels |
| D. | Depends upon the rate of heating |
| Answer» D. Depends upon the rate of heating | |
| 28. |
When low carbon steel is heated up to lower critical temperature |
| A. | There is no change in grain size |
| B. | The average grain size is a minimum |
| C. | The grain size increases very rapidly |
| D. | The grain size first increases and then decreases very rapidly |
| Answer» B. The average grain size is a minimum | |
| 29. |
When low carbon steel is heated up to upper critical temperature |
| A. | There is no change in grain size |
| B. | The average grain size is a minimum |
| C. | The grain size increases very rapidly |
| D. | The grain size first increases and then decreases very rapidly |
| Answer» C. The grain size increases very rapidly | |
| 30. |
Which of the following display properties similar to that of steel? |
| A. | Blackheart cast iron |
| B. | Whiteheart cast iron |
| C. | Both (A) and (B) |
| D. | None of these |
| Answer» D. None of these | |
| 31. |
Slow plastic deformation of metals under a constant stress is known as |
| A. | Creep |
| B. | Fatigue |
| C. | Endurance |
| D. | Plastic deformation |
| Answer» B. Fatigue | |
| 32. |
The surface hardness of the following order is achieved by nitriding operation |
| A. | 600 VPN |
| B. | 1500 VPN |
| C. | 1000 to 1100 VPN |
| D. | 250 VPN |
| Answer» D. 250 VPN | |
| 33. |
A material is said to be allotropic, if it has |
| A. | Fixed structure at all temperatures |
| B. | Atoms distributed in random pattern |
| C. | Different crystal structures at different temperatures |
| D. | Any one of the above |
| Answer» D. Any one of the above | |
| 34. |
Body centered cubic space lattice is found in |
| A. | Zinc, magnesium, cobalt, cadmium, antimony and bismuth |
| B. | Gamma iron, aluminium, copper, lead, silver and nickel |
| C. | Alpha iron, tungsten, chromium and molybdenum |
| D. | None of the above |
| Answer» D. None of the above | |
| 35. |
Closed packed hexagonal space lattice is found in |
| A. | Zinc, magnesium, cobalt, cadmium, antimony and bismuth |
| B. | Gamma-iron, aluminium, copper, lead, silver and nickel |
| C. | Alpha-iron, tungsten, chromium and molybdenum |
| D. | None of the above |
| Answer» B. Gamma-iron, aluminium, copper, lead, silver and nickel | |
| 36. |
Tungsten in steel |
| A. | Improves wear resistance, cutting ability and toughness |
| B. | Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties |
| C. | Improves cutting ability and reduces hardenability |
| D. | Gives ductility, toughness, tensile strength and anti-corrosion properties |
| Answer» C. Improves cutting ability and reduces hardenability | |
| 37. |
Perminvar alloy having constant permeability is an alloy of |
| A. | Nickel, copper and iron |
| B. | Nickel, copper and zinc |
| C. | Copper, nickel and antimony |
| D. | Iron, zinc and bismuth |
| Answer» B. Nickel, copper and zinc | |
| 38. |
Foundry crucible is made of |
| A. | Mild steel |
| B. | German silver |
| C. | Lead |
| D. | Graphite |
| Answer» E. | |
| 39. |
Which is the false statement about wrought iron? It has |
| A. | High resistance to rusting and corrosion |
| B. | High ductility |
| C. | Ability of hold protective coating |
| D. | Uniform strength in all directions |
| Answer» E. | |
| 40. |
Gun metal contains |
| A. | 70% copper and 30% zinc |
| B. | 90% copper and 10% tin |
| C. | 85 - 92% copper and rest tin with little lead and nickel |
| D. | 70 - 78% copper and rest tin |
| Answer» D. 70 - 78% copper and rest tin | |
| 41. |
Admiralty gun metal contains |
| A. | 63 to 67% nickel and 30% copper |
| B. | 88% copper, 10% tin and rest zinc |
| C. | Alloy of tin, lead and cadmium |
| D. | Iron scrap and zinc |
| Answer» C. Alloy of tin, lead and cadmium | |
| 42. |
Duralumin contains |
| A. | 3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium |
| B. | 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium |
| C. | 4 to 4.5% magnesium, 3 to 4% copper and rest aluminium |
| D. | 5 to 6% tin, 2 to 3% copper and rest aluminium |
| Answer» B. 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium | |
| 43. |
The temperature required for full annealing in hypereutectoid steel is |
| A. | 30° C to 50° C above upper critical temperature |
| B. | 30° C to 50° C below upper critical temperature |
| C. | 30° C to 50° C above lower critical temperature |
| D. | 30° C to 50° C below lower critical temperature |
| Answer» D. 30° C to 50° C below lower critical temperature | |
| 44. |
In a hardening process, the hypo-eutectoid steel is |
| A. | Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air |
| B. | Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium |
| C. | Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace |
| D. | Heated below or closes to the lower critical temperature and then cooled slowly |
| Answer» C. Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace | |
| 45. |
In process annealing, the hypo eutectoid steel is |
| A. | Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air |
| B. | Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium |
| C. | Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace |
| D. | Heated below or closes to the lower critical temperature and then cooled slowly |
| Answer» E. | |
| 46. |
The following element can't impart high strength at elevated temperature |
| A. | Manganese |
| B. | Magnesium |
| C. | Nickel |
| D. | Silicon |
| Answer» C. Nickel | |
| 47. |
The elastic stress strain behavior of rubber is |
| A. | Linear |
| B. | Nonlinear |
| C. | Plastic |
| D. | No fixed relationship |
| Answer» C. Plastic | |
| 48. |
The percentage of carbon in low carbon steel is |
| A. | 0.05% |
| B. | 0.15% |
| C. | 0.3% |
| D. | 0.5% |
| Answer» C. 0.3% | |
| 49. |
Manganese is added in low carbon steel to |
| A. | Make the steel tougher and harder |
| B. | Raise the yield point |
| C. | Make the steel ductile and of good bending qualities |
| D. | All of the above |
| Answer» D. All of the above | |
| 50. |
Bronze is an alloy of |
| A. | Copper and zinc |
| B. | Copper and tin |
| C. | Copper, tin and zinc |
| D. | None of these |
| Answer» C. Copper, tin and zinc | |