MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Mechatronics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Live wire and hot wire are same. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Green and yellow striped wire is also used to indicate ac (alternating current) supply live wire. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
What is the standard colour of ac supply neutral wire in India? |
| A. | Red |
| B. | Black |
| C. | Pink |
| D. | Green |
| Answer» C. Pink | |
| 4. |
What is the standard colour of ac supply live wire in India? |
| A. | Red |
| B. | Magenta |
| C. | Pink |
| D. | Green |
| Answer» B. Magenta | |
| 5. |
What is the standard colour of ac supply ground wire in India? |
| A. | Red |
| B. | Magenta |
| C. | Pink |
| D. | Green |
| Answer» E. | |
| 6. |
What does “BOCB” stand for in context to circuit protections? |
| A. | Bulk on-spot circuit breakers |
| B. | Bonded oil circuit breaker |
| C. | Bulk oiled circuit breaker |
| D. | Bulk oil circuit breaker |
| Answer» E. | |
| 7. |
Which material is commonly used for making the arch of circuit breakers? |
| A. | Copper |
| B. | Tungsten |
| C. | Aluminium |
| D. | Copper tungsten alloy |
| Answer» E. | |
| 8. |
What is the medium in which arc is kept in BOCB (Bulk oil circuit breaker)? |
| A. | Oil |
| B. | Air |
| C. | Sand |
| D. | Water |
| Answer» B. Air | |
| 9. |
What is the principal on which MCB (Miniature circuit breaker) works ? |
| A. | Magnetic effect of electric current |
| B. | Lenz law |
| C. | Faradays law of electric current |
| D. | Flemings Right hand rule |
| Answer» B. Lenz law | |
| 10. |
What does “MCB” stand for? |
| A. | Miniature circuit breaker |
| B. | Mini circuit breaker |
| C. | Miniature capacitor breaker |
| D. | Mini Capacitance breaker |
| Answer» B. Mini circuit breaker | |
| 11. |
Potential difference and EMF (Electro-motive force) are same. |
| A. | True |
| B. | False |
| C. | |
| Answer» C. | |
| 12. |
What is the dielectric strength of Sulphur hexafluoride used in SF6 type circuit breaker? |
| A. | 2.5 times of air |
| B. | 2.5 times of water |
| C. | 2.5 times of oil |
| D. | 2.5 times of glass |
| Answer» B. 2.5 times of water | |
| 13. |
Which is not a property of Sulphur hexafluoride? |
| A. | Colourless |
| B. | Odourless |
| C. | Toxic |
| D. | Non-Inflammable |
| Answer» D. Non-Inflammable | |
| 14. |
SF6 circuit breakers are better than BOCB (Bulk oil circuit breaker). |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
What is the medium in which arc is kept in SF6 circuit breaker? |
| A. | Oil |
| B. | Air |
| C. | Sand |
| D. | Sulphur hexafluoride |
| Answer» E. | |