MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 39 Mcqs, each offering curated multiple-choice questions to sharpen your Technical Drawing knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In which of the following aspects is DC welding better than AC welding? |
| A. | Efficiency |
| B. | Power consumption |
| C. | Cost |
| D. | Arc stability |
| Answer» E. | |
| 2. |
Projection welding can be considered as a mass production form of: |
| A. | spot welding |
| B. | flash welding |
| C. | upset welding |
| D. | seam welding |
| Answer» B. flash welding | |
| 3. |
Electrodes used for welding aluminium alloys are: |
| A. | Tungsten copper |
| B. | None of these |
| C. | Cadmium copper |
| D. | Hard drawn copper |
| Answer» E. | |
| 4. |
Arc stability is better with |
| A. | AC welding |
| B. | DC welding |
| C. | Both AC and DC welding |
| D. | Specially designed wave forms |
| Answer» C. Both AC and DC welding | |
| 5. |
In the flash butt welding: |
| A. | No special preparation of the faces to be welded is necessary |
| B. | Clean and pure weld is obtained |
| C. | Power requirement is less |
| D. | All of the above |
| Answer» E. | |
| 6. |
A rectifier used for welding has voltage current characteristic as: |
| A. | Drooping |
| B. | Rising |
| C. | Straight line |
| D. | Flat |
| Answer» B. Rising | |
| 7. |
During the resistance welding, the heat produced at the joint is proportional to: |
| A. | Current |
| B. | Voltage |
| C. | I2R |
| D. | Volt-amperes |
| Answer» D. Volt-amperes | |
| 8. |
As the thickness of the part to be welded increases which of the following parameter(s) for AC welding should also increase? |
| A. | Voltage |
| B. | Current |
| C. | Frequency |
| D. | All of these |
| Answer» C. Frequency | |
| 9. |
In electric arc welding, the deflection of the arc from the weld point is called: |
| A. | arc tail |
| B. | arc blow |
| C. | arc suppression |
| D. | arc loss |
| Answer» C. arc suppression | |
| 10. |
In electric resistance welding |
| A. | The current required exceeds 100 A |
| B. | The voltage required ranges from 4 to 12 V |
| C. | The amount of power supplied to the weld usually ranges from 60 watts to 80 watts for each square mm of area |
| D. | All options are correct |
| Answer» E. | |
| 11. |
During arc welding as the thickness of the metal to be welded increases: |
| A. | Current should increase, voltage remaining the same |
| B. | Current should increase, voltage should decrease |
| C. | Voltage should increase, current remaining the same |
| D. | Current should decrease, voltage should increase |
| Answer» B. Current should increase, voltage should decrease | |
| 12. |
In argon arc welding, argon acts as a: |
| A. | Shield to protect work from getting oxidised |
| B. | Filler material |
| C. | Energy source |
| D. | Flux |
| Answer» B. Filler material | |
| 13. |
Output of a welding transformer, compared with its input is |
| A. | High voltage high current |
| B. | High voltage low current |
| C. | Low voltage high current |
| D. | Low voltage low current |
| Answer» D. Low voltage low current | |
| 14. |
In percussion welding, the heat is produce by a rapid discharge of stored electrical energy from the: |
| A. | Capacitor |
| B. | Inductor |
| C. | Transformer |
| D. | Rectifier |
| Answer» B. Inductor | |
| 15. |
In arc welding the voltage on AC supply system is in the range |
| A. | 1000-1200 V |
| B. | 400-500 V |
| C. | 200-250 V |
| D. | 70-100 V |
| Answer» E. | |
| 16. |
When manual metal arc welding is being carried out on an open construction site, which groupof welders are the most likely to require continuous monitoring? |
| A. | Pipe welding team |
| B. | Concrete shuttering welding teams |
| C. | Plant maintenance welders |
| D. | Plater welders |
| Answer» B. Concrete shuttering welding teams | |
| 17. |
Bend test specimens have been taken from a 25mm thick carbon steel butt weld. Which wouldshow lack of inter-run fusion |
| A. | Root bend |
| B. | Side bend |
| C. | Guided bend |
| D. | Face bend |
| Answer» C. Guided bend | |
| 18. |
Submerged arc welding is a process that generally gives: |
| A. | Low penetration |
| B. | Slag free welds |
| C. | High heat input |
| D. | Low dilution |
| Answer» D. Low dilution | |
| 19. |
Pre-heating a carbon steel manual metal arc welding is carried out to minimize the risk of |
| A. | Worm hole porosity |
| B. | Scattered porosity |
| C. | Lack of penetration |
| D. | Parent metal cracking |
| Answer» E. | |
| 20. |
You notice manual metal arc electrodes, stripped of flux, are being used as filler wire for TIGwelding. You would object because |
| A. | The wire would be too thick |
| B. | It is too expensive |
| C. | The wire is too short |
| D. | The weld metal composition may be wrong |
| Answer» E. | |
| 21. |
Welding templates can simplify drawing welding symbols by hand. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 22. |
A fillet weld is a type of resistance weld. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 23. |
In a welding symbol, the arrow points to the joint where the weld is to be made. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 24. |
Welding is often more expensive when only one or a few identical parts are required. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 25. |
A spot weld is a type of resistance weld. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 26. |
The usual fillet weld has equal legs. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 27. |
A groove weld is a type of arc and gas weld. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 28. |
Weldments are composed of a number of separate pieces fastened together as a unit. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 29. |
A seam weld is a type of arc and gas weld. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 30. |
The symbol for the desired weld is attached to the reference line, or shank, of the arrow. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 31. |
Type of weld is typically not specified on the welding symbol. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» C. 1 | |
| 32. |
Groove weld size is usually specified on the welding symbol. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 33. |
In a welding drawing, joints are all shown as they would appear before welding. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» B. | |
| 34. |
A back or backing weld is a type of: |
| A. | Groove weld |
| B. | Resistance weld |
| C. | Arc and gas weld |
| D. | Upset weld |
| Answer» D. Upset weld | |
| 35. |
Welding drawings are a special type of this kind of drawing: |
| A. | Symbol |
| B. | Perspective |
| C. | Assembly |
| D. | Isometric |
| Answer» D. Isometric | |
| 36. |
These weld symbols have no arrow-side or other-side significance: |
| A. | Projection or seam weld |
| B. | Back or backing weld |
| C. | Surface or groove weld |
| D. | Flash and upset weld |
| Answer» E. | |
| 37. |
Welding is often used for large structures that are difficult or impossible to fabricate entirely in a shop. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» B. | |
| 38. |
Which of the following is one of the basic types of welded joints: |
| A. | T-joint |
| B. | Rear joint |
| C. | Angle joint |
| D. | Groove joint |
| Answer» B. Rear joint | |
| 39. |
A projection weld is a type of: |
| A. | Resistance weld |
| B. | Arc weld |
| C. | Gas weld |
| D. | Fillet weld |
| Answer» B. Arc weld | |