MCQOPTIONS
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MCQOPTIONS
This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Electrician And Wireman knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the nominal voltage of a given battery is 1.2 V, what is the type cell of used? |
| A. | Lithium ion |
| B. | Lead acid |
| C. | Nickel cadmium |
| D. | Zinc silver oxide |
| Answer» D. Zinc silver oxide | |
| 2. |
Leclanche cell is most suited for: |
| A. | Continuous use |
| B. | Large current requirements |
| C. | Intermittent use |
| D. | Large voltage requirements |
| Answer» D. Large voltage requirements | |
| 3. |
Dilute sulphuric acid is used as an electrolyte in which of the following battery? |
| A. | Nickel Cadmium |
| B. | Lead Acid |
| C. | Lithium Cells |
| D. | Carbon zinc |
| Answer» C. Lithium Cells | |
| 4. |
Current Control Mode is used for _______. |
| A. | Fluctuating Battery Charging |
| B. | Slow Charging |
| C. | Constant Battery Charging |
| D. | Fast Battery Charging |
| Answer» D. Fast Battery Charging | |
| 5. |
In a constant voltage charging method of battery, the charging current from discharged to fully charged condition |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | Varies in proportion to charging time |
| Answer» C. Remains constant | |
| 6. |
A 12 V battery is rated at 48 AH. If it must deliver an average of 2.0 A, how long will the battery last before it needs recharging |
| A. | 48 hrs |
| B. | 4 hrs |
| C. | 96 hrs |
| D. | 24 hrs |
| Answer» E. | |
| 7. |
A 12 V battery is rated for 48 AH. If it must deliver an average of 2A, how long will the battery last before it needs recharging. |
| A. | 48 hours |
| B. | 4 hours |
| C. | 2 hours |
| D. | 24 hours |
| Answer» E. | |
| 8. |
If the battery is recharged for a longer period at a low rate called ________ |
| A. | Constant current method charging |
| B. | Constant voltage method charging |
| C. | Rectifier method charging |
| D. | Trickle charge method |
| Answer» E. | |
| 9. |
A type of electrical battery which can be charged, discharged into a load, and then recharged many times is called ________. |
| A. | Rechargeable battery |
| B. | Secondary battery |
| C. | Primary battery |
| D. | Both 1 and 2 |
| Answer» E. | |
| 10. |
Consider the following materials:1. Lead peroxide2. Sponge lead3. Dilute sulphuric acidWhich of the above are active materials of a lead-acid battery? |
| A. | 1 and 2 only |
| B. | 1 and 3 only |
| C. | 2 and 3 only |
| D. | 1, 2 and 3 |
| Answer» E. | |
| 11. |
Battery balancing circuit enhances: |
| A. | Temperature |
| B. | Concentration |
| C. | Pressure |
| D. | Life of battery |
| Answer» E. | |
| 12. |
A battery charger acts like a __________. |
| A. | converter |
| B. | rectifier |
| C. | cycloconverter |
| D. | chopper |
| Answer» C. cycloconverter | |
| 13. |
In order to increase the ampere-hour rating of a battery, cells are connected in |
| A. | Series |
| B. | Parallel |
| C. | Series parallel |
| D. | Star |
| Answer» C. Series parallel | |
| 14. |
A battery of 7.5 V, 4 AH is formed by using cells of 1.5 V, 1 AH, and internal resistance of 0.2 Ω. If a load of 1 Ω is connected across the battery, find the current through it. |
| A. | 1.5 A |
| B. | 5 A |
| C. | 6 A |
| D. | 7.5 A |
| Answer» D. 7.5 A | |
| 15. |
Four cells each of 2 V and 4 Ah are connected in parallel, the net voltage of the battery is |
| A. | 0.5 V |
| B. | 2 V |
| C. | 4 V |
| D. | 3 V |
| Answer» C. 4 V | |
| 16. |
An alkaline cell is discharged at a steady current of 4A for 12 hours. To restore it to its original state of charge, a steady current of 3A for 20 hours is required. Calculate ah efficiency. |
| A. | 80% |
| B. | 60% |
| C. | 70% |
| D. | 90% |
| Answer» B. 60% | |
| 17. |
Electrolyte of a lead-acid battery is formed by adding: |
| A. | Water to hydrochloric acid |
| B. | Sulphuric acid to water |
| C. | Hydrochloric acid to water |
| D. | Water to sulphuric acid |
| Answer» C. Hydrochloric acid to water | |
| 18. |
Boost charging is the process of charging on _______. |
| A. | Low current for short time |
| B. | High current for a short time |
| C. | Low current for a long time |
| D. | High current for a long Time |
| Answer» C. Low current for a long time | |
| 19. |
Lead-acid cells are ______. |
| A. | rechargeable cells |
| B. | use and throw cells |
| C. | forbidden cells |
| D. | non-rechargeable cells |
| Answer» B. use and throw cells | |