MCQOPTIONS
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MCQOPTIONS
This section includes 213 Mcqs, each offering curated multiple-choice questions to sharpen your Automobile Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be welded) |
| A. | √t |
| B. | 1.5 t |
| C. | 3 t |
| D. | 6 t |
| Answer» B. 1.5 t | |
| 2. |
A moving mandrel is used in |
| A. | Wire drawing |
| B. | Tube drawing |
| C. | Metal cutting |
| D. | Forging |
| Answer» C. Metal cutting | |
| 3. |
The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called |
| A. | Shearing |
| B. | Piercing |
| C. | Punching |
| D. | Blanking |
| Answer» C. Punching | |
| 4. |
For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately |
| A. | 42 mm |
| B. | 44 mm |
| C. | 46 mm |
| D. | 48 mm |
| Answer» D. 48 mm | |
| 5. |
In TIG arc welding, the welding zone is shielded by an atmosphere of |
| A. | Helium gas |
| B. | Argon gas |
| C. | Either (A) or (B) |
| D. | None of these |
| Answer» D. None of these | |
| 6. |
A gimlet is a ________ tool. |
| A. | Boring |
| B. | Marking |
| C. | Cutting |
| D. | None of these |
| Answer» B. Marking | |
| 7. |
The brass and bronze are welded by _________ flame. |
| A. | Neutral |
| B. | Oxidizing |
| C. | Carburising |
| D. | All of these |
| Answer» C. Carburising | |
| 8. |
V-block is used to |
| A. | Check the trueness of flat surfaces |
| B. | Locate centres of round rods |
| C. | Check the surface roughness |
| D. | None of these |
| Answer» E. | |
| 9. |
A hacksaw blade cuts on the |
| A. | Forward stroke |
| B. | Return stroke |
| C. | Both forward and return strokes |
| D. | Cutting depends upon the direction of force |
| Answer» B. Return stroke | |
| 10. |
Structural sections such as rails, angles, I-beams are made by |
| A. | Hot rolling |
| B. | Hot drawing |
| C. | Hot piercing |
| D. | Hot extrusion |
| Answer» B. Hot drawing | |
| 11. |
The electron beam welding can be carried out in |
| A. | Open air |
| B. | A shielded gas environment |
| C. | Vacuum |
| D. | A pressurized inert gas chamber |
| Answer» D. A pressurized inert gas chamber | |
| 12. |
In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding. |
| A. | Same |
| B. | Less |
| C. | More |
| D. | None of these |
| Answer» D. None of these | |
| 13. |
The operation of bending a sheet of metal along a curved axis, is known as |
| A. | Plunging |
| B. | Notching |
| C. | Slitting |
| D. | Forming |
| Answer» E. | |
| 14. |
The teeth of hacksaw blade are bent |
| A. | Towards right |
| B. | Towards left |
| C. | Alternately towards right and left and every third or fourth left straight |
| D. | May be bent in any direction |
| Answer» D. May be bent in any direction | |
| 15. |
The recrystallisation temperature of steel is |
| A. | 400°C |
| B. | 600°C |
| C. | 800°C |
| D. | None of these |
| Answer» D. None of these | |
| 16. |
The parts of circular cross-section which are symmetrical about the axis of rotation are made by |
| A. | Hot forging |
| B. | Hot spinning |
| C. | Hot extrusion |
| D. | Hot drawing |
| Answer» C. Hot extrusion | |
| 17. |
In piercing operation, the clearance is provided on |
| A. | Punch |
| B. | Die |
| C. | Half on the punch and half on the die |
| D. | Either on punch or die depending upon designer's choice |
| Answer» C. Half on the punch and half on the die | |
| 18. |
In blanking operation, the clearance is provided on |
| A. | Punch |
| B. | Die |
| C. | Half on the punch and half on the die |
| D. | Either on punch or die depending upon designer's choice |
| Answer» B. Die | |
| 19. |
The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is |
| A. | Less than 0.1 percent |
| B. | Less than 0.3 percent |
| C. | More than 0.3 percent |
| D. | Anywhere between 0.1 to 1 percent |
| Answer» D. Anywhere between 0.1 to 1 percent | |
| 20. |
In sheet metal work, he cutting force on the tool can be reduced by |
| A. | Grinding the cutting edges sharp |
| B. | Increasing the hardness of tool |
| C. | Providing shear on tool |
| D. | Increasing the hardness of die |
| Answer» B. Increasing the hardness of tool | |
| 21. |
During drawing operation, the states of stress in cup would include |
| A. | Compressive stress in the flange |
| B. | Tensile stress in the wall |
| C. | Both (A) and (B) |
| D. | None of these |
| Answer» D. None of these | |
| 22. |
The consumable electrode is used in |
| A. | Carbon arc welding |
| B. | Submerged arc welding |
| C. | TIG arc welding |
| D. | MIG arc welding |
| Answer» E. | |
| 23. |
The welding process used to join the ends of two pipes of uniform cross-section, is |
| A. | Spot welding |
| B. | Seam welding |
| C. | Projection welding |
| D. | Upset butt welding |
| Answer» E. | |
| 24. |
Cores are used to |
| A. | Form internal cavities in the casting |
| B. | Improve mould surface |
| C. | Form a part of a green sand mould |
| D. | All of these |
| Answer» E. | |
| 25. |
The cross-section of a chisel is usually |
| A. | Rectangular |
| B. | Square |
| C. | Hexagonal |
| D. | Octagonal |
| Answer» E. | |
| 26. |
The operation of cutting of a flat sheet to the desired shape is called |
| A. | Shearing |
| B. | Piercing |
| C. | Punching |
| D. | Blanking |
| Answer» E. | |
| 27. |
Green sand is a mixture of |
| A. | 30% sand and 70% clay |
| B. | 50% sand and 50% clay |
| C. | 70% sand and 30% clay |
| D. | 90% sand and 10% clay |
| Answer» D. 90% sand and 10% clay | |
| 28. |
Loam sand is a mixture of |
| A. | 30% sand and 70% clay |
| B. | 50% sand and 50% clay |
| C. | 70% sand and 30% clay |
| D. | 90% sand and 10% clay |
| Answer» C. 70% sand and 30% clay | |
| 29. |
Acetylene gas is stored in cylinders in |
| A. | Solid form |
| B. | Gaseous form |
| C. | Liquid form |
| D. | Any one of these |
| Answer» D. Any one of these | |
| 30. |
The width of slot cut by a hacksaw blade is _______ the width of the blade. |
| A. | Equal to |
| B. | Less than |
| C. | Greater than |
| D. | None of these |
| Answer» D. None of these | |
| 31. |
Most of the oxyacetylene welding is done with |
| A. | Neutral flame |
| B. | Oxidizing flame |
| C. | Carburising flame |
| D. | All of these |
| Answer» B. Oxidizing flame | |
| 32. |
During cold working process |
| A. | Grain structure is distorted |
| B. | Strength and hardness of metal increases |
| C. | Close dimensional tolerance can be maintained |
| D. | All of the above |
| Answer» E. | |
| 33. |
The purpose of a gate is to |
| A. | Delivers molten metal into the mould cavity |
| B. | Act as a reservoir for the molten metal |
| C. | Feed the molten metal to the casting in order to compensate for the shrinkage |
| D. | Delivers molten metal from pouring basin to gate |
| Answer» B. Act as a reservoir for the molten metal | |
| 34. |
A progressive limit gauge has |
| A. | 'Go' and 'Not go' member on the same side of the gauge |
| B. | Separate 'Go' and 'Not go' members |
| C. | 'Go' member at one end and 'Not go' member at the other end |
| D. | None of the above |
| Answer» B. Separate 'Go' and 'Not go' members | |
| 35. |
Carburising flame is used to weld |
| A. | Steel, cast iron, copper, aluminium etc |
| B. | Brass and bronze |
| C. | Hard surfacing materials such as stellite |
| D. | All of these |
| Answer» D. All of these | |
| 36. |
In a cold chamber die casting machine |
| A. | Melting pot is separate from the machine |
| B. | Melting pot is an integral part of the machine |
| C. | Melting pot may have any location |
| D. | Low temperature and pressure is used |
| Answer» B. Melting pot is an integral part of the machine | |
| 37. |
To prevent the body of the blade from jamming in the saw cut, the teeth of blade are |
| A. | Strengthened |
| B. | Sharpened |
| C. | Set |
| D. | All of these |
| Answer» D. All of these | |
| 38. |
In electric resistance welding, voltage required for heating is |
| A. | 1 to 5 volts |
| B. | 6 to 10 volts |
| C. | 11 to 20 volts |
| D. | 50 to 100 volts |
| Answer» C. 11 to 20 volts | |
| 39. |
In backhand welding, the angle between the welding torch and the work is kept as |
| A. | 30°-40° |
| B. | 40°-50° |
| C. | 50°-60° |
| D. | 60°-70° |
| Answer» C. 50°-60° | |
| 40. |
In forehand welding, the angle between the welding rod and the work is kept as |
| A. | 30°-40° |
| B. | 40°-50° |
| C. | 50°-60° |
| D. | 60°-70° |
| Answer» B. 40°-50° | |
| 41. |
In order to check the clearance between two mating surfaces, a ________ gauge should be used. |
| A. | Ring |
| B. | Plug |
| C. | Feeler |
| D. | None of these |
| Answer» D. None of these | |
| 42. |
The temperature produced by oxy-hydrogen flame is about |
| A. | 1800°C |
| B. | 2100°C |
| C. | 2400°C |
| D. | 3200°C |
| Answer» D. 3200°C | |
| 43. |
The maximum flame temperature occurs |
| A. | At the outer cone |
| B. | At the inner cone |
| C. | Between the outer and inner cone |
| D. | At the torch tip |
| Answer» C. Between the outer and inner cone | |
| 44. |
A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct? |
| A. | The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction |
| B. | The upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction |
| C. | The bottom and middle roll rotate in the same direction |
| D. | Any one of the above |
| Answer» C. The bottom and middle roll rotate in the same direction | |
| 45. |
The cold chisels are made from |
| A. | Cast iron |
| B. | Mild steel |
| C. | High speed steel |
| D. | Cast tool steel |
| Answer» E. | |
| 46. |
In shielded arc welding |
| A. | Large electrode is used |
| B. | Welding rod coated with slag is used |
| C. | Welding rod coated with fluxing material is used |
| D. | None of the above |
| Answer» D. None of the above | |
| 47. |
The metal patterns as compared to wooden patterns require less |
| A. | Shrinkage allowance |
| B. | Machining allowance |
| C. | Draft allowance |
| D. | Distortion allowance |
| Answer» D. Distortion allowance | |
| 48. |
According to Indian standards, the total numbers of tolerance grades are |
| A. | 8 |
| B. | 12 |
| C. | 18 |
| D. | 20 |
| Answer» D. 20 | |
| 49. |
The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is |
| A. | Outside micrometer |
| B. | Inside micrometer |
| C. | Depth gauge micrometer |
| D. | Vernier caliper |
| Answer» E. | |
| 50. |
A ring gauge is used to |
| A. | Check the diameter of shafts or studs |
| B. | Test the accuracy of holes |
| C. | Check the clearance between two mating surfaces |
| D. | All of the above |
| Answer» B. Test the accuracy of holes | |