MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following electrode has low electrical conductivity but high strength? |
| A. | Copper chromium alloys |
| B. | Copper cobalt alloys |
| C. | Copper beryllium alloys |
| D. | Copper cadmium alloys |
| Answer» B. Copper cobalt alloys | |
| 2. |
Which of the following electrode has very high electrical conductivity but low strength? |
| A. | Copper chromium alloys |
| B. | Copper cobalt alloys |
| C. | Copper beryllium alloys |
| D. | Copper cadmium alloys |
| Answer» E. | |
| 3. |
According to the joules law? |
| A. | The poor conductor heats up to a higher degree than a good conductor |
| B. | The poor conductor heats up to a lower degree than a good conductor |
| C. | The poor conductor heats up to equal degree than a good conductor |
| D. | Joules law does not relate to heat |
| Answer» B. The poor conductor heats up to a lower degree than a good conductor | |
| 4. |
Which of the following is true about resistance welding? |
| A. | Electrodes of higher resistivity is used for lower resistive piece |
| B. | Electrodes of higher resistivity is used for higher resistive piece |
| C. | Electrodes of lower resistivity is used for lower resistive piece |
| D. | Electrodes of lower resistivity is used for higher resistive piece |
| Answer» B. Electrodes of higher resistivity is used for higher resistive piece | |
| 5. |
Which of the following is true about electrodes? |
| A. | Low electrical conductivity and low mechanical strength |
| B. | Low electrical conductivity and high mechanical strength |
| C. | High electrical conductivity and low mechanical strength |
| D. | High electrical conductivity and high mechanical strength |
| Answer» E. | |
| 6. |
If 20 amperes of current is flowing in a wire for 1 minute of time having a resistance of 1000 ohm. Then the amount of heat generated in resistance welding will be (in kilo joules)? |
| A. | 24000 |
| B. | 240000 |
| C. | 24000000 |
| D. | 2400 |
| Answer» B. 240000 | |
| 7. |
Total resistance in welding is composed of:(i) Resistance of electrode(ii) Contact resistance between electrode and work piece(iii) Contact resistance between two work piece plates(iv) Resistance of work pieceWhich of the following is correct? |
| A. | i |
| B. | ii, iii and iv |
| C. | ii and iv |
| D. | I, ii, iii and iv |
| Answer» E. | |
| 8. |
In which of the following welding process heat and pressure is applied on the joint but no filler material or flux is added? |
| A. | Arc welding |
| B. | Resistance welding |
| C. | Gas welding |
| D. | Thermite welding |
| Answer» C. Gas welding | |
| 9. |
Which of the following is not used to produce heat during welding? |
| A. | Electric arc |
| B. | Chemical flame |
| C. | Electrical resistance |
| D. | Acetone flame |
| Answer» E. | |
| 10. |
Which of the following is not true about fusion welding? |
| A. | It depends upon the characteristics of heat source. |
| B. | It depends upon the nature of deposition of the filler material |
| C. | It does not depend upon the heat flow characteristics in the joint |
| D. | It depends upon the gas metal or slag metal reaction |
| Answer» D. It depends upon the gas metal or slag metal reaction | |