McqMate
Chapters
| 1. |
Which of the following joint have high corrosion resistance? |
| A. | Welding joint |
| B. | Riveted joint |
| C. | Bolted joint |
| D. | None of the above |
| Answer» A. Welding joint | |
| 2. |
The metals having good weldability, in descending order are |
| A. | cast steel, iron, carbonsteel, castiron |
| B. | carbon steel, iron, cast steel, castiron |
| C. | iron, carbonsteel, cast steel, castiron |
| D. | castiron, iron, carbon steel, cast steel |
| Answer» A. cast steel, iron, carbonsteel, castiron | |
| 3. |
Which of the following is not included in weldability? |
| A. | Ability of mechanical soundness |
| B. | Serviceability of joint |
| C. | Strain relieving brittleness |
| D. | Metallurgical compatibility of metal |
| Answer» C. Strain relieving brittleness | |
| 4. |
On which of the following factor, does weldability not depend? |
| A. | Boiling point |
| B. | Melting point |
| C. | Thermal expansion |
| D. | Thermal conductivity |
| Answer» A. Boiling point | |
| 5. |
Which ofthe following is not away of correcting the metalwhich does not have good weldability properties? |
| A. | Procedure of welding |
| B. | Provision of fluxing material |
| C. | Provision of filler material |
| D. | Procedure of adding filler materials |
| Answer» D. Procedure of adding filler materials | |
| 6. |
Which of the following is an example of plastic welding? |
| A. | Gas welding |
| B. | Arc welding |
| C. | Forge welding |
| D. | Thermit welding |
| Answer» C. Forge welding | |
| 7. |
Which of the following is an example of fusion welding? |
| A. | Arc welding |
| B. | Forge welding |
| C. | Resistance welding |
| D. | Thermit welding with pressure |
| Answer» A. Arc welding | |
| 8. |
Which ofthe followingwelding process is usedforweldingof sheetmetals in automobile and air craft industries? |
| A. | Shield metal arc welding |
| B. | Gas tungsten arc welding |
| C. | Thermit welding |
| D. | Resistance welding |
| Answer» D. Resistance welding | |
| 9. |
In which of the following process, heat is created by blacksmith fire |
| A. | Forge welding |
| B. | Spot welding |
| C. | Projection welding |
| D. | Seam welding |
| Answer» A. Forge welding | |
| 10. |
The voltage needed in resistance welding does not depend upon |
| A. | Composition |
| B. | Area |
| C. | Thickness of weld |
| D. | Length of weld |
| Answer» D. Length of weld | |
| 11. |
In resistance welding, two electrodes are made of |
| A. | Aluminium |
| B. | Copper |
| C. | Iron |
| D. | Bronze |
| Answer» B. Copper | |
| 12. |
Arc welding machine uses only D.C. supply. |
| A. | True |
| B. | False |
| C. | all |
| D. | none |
| Answer» B. False | |
| 13. |
The negative pole of the electrode burns away faster than the positive pole. |
| A. | True |
| B. | False |
| C. | all |
| D. | none |
| Answer» B. False | |
| 14. |
Which of the following is affected by weld contour? |
| A. | Fatigue |
| B. | Creep |
| C. | Highpressureproperty |
| D. | Lowpressureproperty |
| Answer» A. Fatigue | |
| 15. |
Which of the following materials are not suited for cold welding? |
| A. | Brass |
| B. | Steel |
| C. | Silver |
| D. | Gold |
| Answer» B. Steel | |
| 16. |
Match the following
|
| A. | 1-3, 2-2, 3-1 |
| B. | 1-3, 2-1, 3-2 |
| C. | 1-2, 2-3, 3-1 |
| D. | 1-2, 2-1,3-3 |
| Answer» B. 1-3, 2-1, 3-2 | |
| 17. |
What is the capacity of an automatic welding machine? |
| A. | 100 to200A |
| B. | 300 to 400A |
| C. | 500 to700A |
| D. | 800 to 3000A |
| Answer» D. 800 to 3000A | |
| 18. |
What is the capacity of a light manual welding machine? |
| A. | 100 to200A |
| B. | 300 to 400A |
| C. | 500 to700A |
| D. | 60 amp to 500 amp |
| Answer» C. 500 to700A | |
| 19. |
What is the efficiency of an A.C. welding transformer? |
| A. | 0.6 |
| B. | 0.7 |
| C. | 0.8 |
| D. | 0.9 |
| Answer» C. 0.8 | |
| 20. |
What is the amount of electric energy required per kg in dc welding operation? |
| A. | 1-4 kWh |
| B. | 3-7 kWh |
| C. | 4-9 kWh |
| D. | 6-10 kWh |
| Answer» D. 6-10 kWh | |
| 21. |
During fabrication joining of two or more components are ___ |
| A. | Temporarily |
| B. | Permanently |
| C. | Temporarily or permanently both |
| D. | None of the above |
| Answer» C. Temporarily or permanently both | |
| 22. |
During fabrication which processes are included |
| A. | Welding |
| B. | Brazing |
| C. | Soldering |
| D. | All of the above |
| Answer» D. All of the above | |
| 23. |
The Weldability of the metals in descending order |
| A. | Iron, Steel, Cast iron, Low Alloy steel |
| B. | Steel, Cast iron, Iron, Low Alloy steel |
| C. | Iron, Cast iron, steel, low Alloy steel |
| D. | Steel, Iron, Cast iron, Low Alloy steel |
| Answer» A. Iron, Steel, Cast iron, Low Alloy steel | |
| 24. |
The Weldability of the metals in Ascending order |
| A. | Low Alloy Steel, Stainless Steel, Cast Iron, Steel |
| B. | Low Alloy Steel, Cast Iron, Steel, Stainless Steel |
| C. | Stainless Steel, Low Alloy Steel, Cast Iron, Steel |
| D. | Stainless Steel, Low Alloy Steel, Steel, Cast Iron |
| Answer» C. Stainless Steel, Low Alloy Steel, Cast Iron, Steel | |
| 25. |
During the welding power require to produce arc to join the metals are |
| A. | Low voltage low ampere |
| B. | Low voltage high ampere |
| C. | High voltage low ampere |
| D. | High voltage high ampere |
| Answer» B. Low voltage high ampere | |
| 26. |
Out of them which of the power source used in welding |
| A. | Bilopar welding generator, |
| B. | Multi operator D.C. welding sets |
| C. | Both of them |
| D. | None of them |
| Answer» C. Both of them | |
| 27. |
Static type power sources include |
| A. | Transformer, Motor-driven generator |
| B. | Rectifier, Engine-driven Generator |
| C. | Transformer, Rectifier |
| D. | Motor-driven generator, Engine-driven generator |
| Answer» C. Transformer, Rectifier | |
| 28. |
Rotating type power sources includes |
| A. | Transformer, Motor-driven generator |
| B. | Rectifier, Engine-driven Generator |
| C. | Transformer, Rectifier |
| D. | Motor-driven generator, Engine-driven generator |
| Answer» D. Motor-driven generator, Engine-driven generator | |
| 29. |
Which type of plates cannot be welded in single pass |
| A. | Thick plates |
| B. | Thin Plates |
| C. | all |
| D. | none |
| Answer» A. Thick plates | |
| 30. |
In power-sources Transformer can change polarity or not? |
| A. | Yes |
| B. | No |
| C. | all |
| D. | none |
| Answer» B. No | |
| 31. |
In arc welding voltage is dependent of _____ |
| A. | Arc length |
| B. | Arc gap |
| C. | Both of them |
| D. | None of them |
| Answer» C. Both of them | |
| 32. |
The percentage of __ minutes duration during which the power source with necessary output can be used without causing any damage |
| A. | 5 |
| B. | 10 |
| C. | 50 |
| D. | 60 |
| Answer» B. 10 | |
| 33. |
In power sources Current used is |
| A. | 50-1000 Amp |
| B. | 500-1000 Amp |
| C. | 100-500 Amp |
| D. | 50-200 Amp |
| Answer» A. 50-1000 Amp | |
| 34. |
Full form of OCV is |
| A. | Output current voltage |
| B. | Open command voltage |
| C. | Open current voltage |
| D. | Output command voltage |
| Answer» C. Open current voltage | |
| 35. |
Which type of Power source is Solid State |
| A. | Static type |
| B. | Rotating type |
| C. | Special type |
| D. | None of them |
| Answer» C. Special type | |
| 36. |
Which of power source is an engine-driven generator |
| A. | Static type |
| B. | Rotating type |
| C. | Special type |
| D. | None of them |
| Answer» B. Rotating type | |
| 37. |
Which of power source is Rectifier? |
| A. | Static type |
| B. | Rotating type |
| C. | Special type |
| D. | None of them |
| Answer» A. Static type | |
| 38. |
Full-Form of the MMAW is |
| A. | Manual metal arc welding |
| B. | Molted metal arc welding |
| C. | Mix Metal arc welding |
| D. | Metal arc welding |
| Answer» A. Manual metal arc welding | |
| 39. |
The voltage needed in resistance welding does not depend upon |
| A. | Composition |
| B. | Area |
| C. | Thickness |
| D. | Length |
| Answer» D. Length | |
| 40. |
Which type of process is also known as the fabrication process? |
| A. | Casting |
| B. | Forming |
| C. | Joining |
| D. | None of them |
| Answer» C. Joining | |
| 41. |
Arc length in arc welding should be equal to ___ |
| A. | Half the diameter of the electrode rod |
| B. | Rod diameter |
| C. | Twice the rod diameter |
| D. | None of the above |
| Answer» B. Rod diameter | |
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