MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
*/*_In a cable, the maximum stress under operating conditions is at? |
| A. | Insulation layer |
| B. | Sheath |
| C. | Armour |
| D. | Conductor surface |
| Answer» E. | |
| 2. |
*/*_Empire tape is? |
| A. | Varnished cambric |
| B. | Vulcanized rubber |
| C. | Impregnated paper |
| D. | None of the above |
| Answer» B. Vulcanized rubber | |
| 3. |
*/*_In capacitance grading of cables we use a _________ dielectric.? |
| A. | Composite |
| B. | Porous |
| C. | Homogeneous |
| D. | Hygroscopic |
| Answer» B. Porous | |
| 4. |
*/*_In cables the charging current? |
| A. | Lags the voltage by 90° |
| B. | Leads the voltage by 90° |
| C. | Lags the voltage by 180° |
| D. | Leads the voltage by 180° |
| Answer» C. Lags the voltage by 180¬¨‚àû | |
| 5. |
_ In capacitance grading of cables we use a _________ dielectric.$? |
| A. | Composite |
| B. | Porous |
| C. | Homogeneous |
| D. | Hygroscopic |
| Answer» B. Porous | |
| 6. |
_ In a cable, the maximum stress under operating conditions is at$? |
| A. | Insulation layer |
| B. | Sheath |
| C. | Armour |
| D. | Conductor surface |
| Answer» E. | |
| 7. |
_ Empire tape is$? |
| A. | Varnished cambric |
| B. | Vulcanized rubber |
| C. | Impregnated paper |
| D. | None of the above |
| Answer» B. Vulcanized rubber | |
| 8. |
_ In cables the charging current$? |
| A. | Lags the voltage by 90° |
| B. | Leads the voltage by 90° |
| C. | Lags the voltage by 180° |
| D. | Leads the voltage by 180° |
| Answer» C. Lags the voltage by 180¬¨‚àû | |
| 9. |
_In a cable immediately above metallic sheath ________ is provided.$? |
| A. | Earthing connection |
| B. | Bedding |
| C. | Armouring |
| D. | None of the above |
| Answer» C. Armouring | |
| 10. |
_The breakdown of insulation of the cable can be avoided economically by the use of$? |
| A. | Inter-sheaths |
| B. | Insulating materials with different dielectric constants |
| C. | Both (A) and (B) |
| D. | None of the above |
| Answer» D. None of the above | |
| 11. |
__________ cables are used for 132 kV lines.$? |
| A. | High tension |
| B. | Super tension |
| C. | Extra high tension |
| D. | Extra super voltage |
| Answer» E. | |
| 12. |
_Which of the following protects a cable against mechanical injury?$? |
| A. | Bedding |
| B. | Sheath |
| C. | Armouring |
| D. | None of the above |
| Answer» D. None of the above | |
| 13. |
A certain cable has an insulation of relative permittivity 4. If the insulation is replaced by one of relative permittivity 2, the capacitance of the cable will become$? |
| A. | One half |
| B. | Double |
| C. | Four times |
| D. | None of the above |
| Answer» B. Double | |
| 14. |
Conduit pipes are normally used to protect ________ cables.$? |
| A. | Unsheathed cables |
| B. | Armoured |
| C. | PVC sheathed cables |
| D. | All of the above |
| Answer» B. Armoured | |
| 15. |
In the cables, sheaths are used to$? |
| A. | Prevent the moisture from entering the cable |
| B. | Provide enough strength |
| C. | Provide proper insulation |
| D. | None of the above |
| Answer» B. Provide enough strength | |
| 16. |
The disadvantage with paper as insulating material is$? |
| A. | It is hygroscopic |
| B. | It has high capacitance |
| C. | It is an organic material |
| D. | None of the above |
| Answer» B. It has high capacitance | |
| 17. |
In the cables, sheaths are used to? |
| A. | Prevent the moisture from entering the cable |
| B. | Provide enough strength |
| C. | Provide proper insulation |
| D. | None of the above |
| Answer» B. Provide enough strength | |
| 18. |
A certain cable has an insulation of relative permittivity 4. If the insulation is replaced by one of relative permittivity 2, the capacitance of the cable will become? |
| A. | One half |
| B. | Double |
| C. | Four times |
| D. | None of the above |
| Answer» B. Double | |
| 19. |
Conduit pipes are normally used to protect ________ cables.? |
| A. | Unsheathed cables |
| B. | Armoured |
| C. | PVC sheathed cables |
| D. | All of the above |
| Answer» B. Armoured | |
| 20. |
The disadvantage with paper as insulating material is? |
| A. | It is hygroscopic |
| B. | It has high capacitance |
| C. | It is an organic material |
| D. | None of the above |
| Answer» B. It has high capacitance | |
| 21. |
The inters heaths in the cables are used to |
| A. | Minimize the stress |
| B. | Avoid the requirement of good insulation |
| C. | Provide proper stress distribution |
| D. | None of the above |
| Answer» D. None of the above | |