Which of the following battery chemistries is rechargeable?
The correct answer is D: All these choices are correct. All of these battery chemistries are rechargeable: Nickel-metal hydride (NiMH), Lithium-ion (Li-ion), and Lead-acid. These are all common rechargeable battery types used in amateur radio equipment.
Rechargeable batteries can be recharged many times, making them cost-effective and environmentally friendly. Nickel-metal hydride batteries are common in portable equipment. Lithium-ion batteries are used in modern devices for high energy density. Lead-acid batteries are used in larger applications like base stations and vehicles. All three types can be recharged by applying the correct charging voltage and current. Understanding battery types is important for selecting the right power source for your equipment.
Exam Tip
All three battery types = Rechargeable. Remember: NiMH, Li-ion, and Lead-acid are all rechargeable battery chemistries commonly used in amateur radio.
Memory Aid
"**R**echargeable = **N**iMH, **L**i-ion, **L**ead-acid (think 'R = NLL')"
Real-World Application
You're choosing batteries for your portable station. You consider NiMH for your handheld (rechargeable), Li-ion for your tablet (rechargeable), and Lead-acid for your base station backup (rechargeable). All three types can be recharged many times, making them economical choices for different applications.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. While NiMH is rechargeable, the question asks which are rechargeable, and all three listed are rechargeable, so this is incomplete.
Option B: Incorrect. While Li-ion is rechargeable, the question asks which are rechargeable, and all three listed are rechargeable, so this is incomplete.
Option C: Incorrect. While Lead-acid is rechargeable, the question asks which are rechargeable, and all three listed are rechargeable, so this is incomplete.
题目解析
The correct answer is D: All these choices are correct. All of these battery chemistries are rechargeable: Nickel-metal hydride (NiMH), Lithium-ion (Li-ion), and Lead-acid. These are all common rechargeable battery types used in amateur radio equipment. Rechargeable batteries can be recharged many times, making them cost-effective and environmentally friendly. Nickel-metal hydride batteries are common in portable equipment. Lithium-ion batteries are used in modern devices for high energy density. Lead-acid batteries are used in larger applications like base stations and vehicles. All three types can be recharged by applying the correct charging voltage and current. Understanding battery types is important for selecting the right power source for your equipment.
考试技巧
All three battery types = Rechargeable. Remember: NiMH, Li-ion, and Lead-acid are all rechargeable battery chemistries commonly used in amateur radio.
记忆口诀
**R**echargeable = **N**iMH, **L**i-ion, **L**ead-acid (think 'R = NLL')
实际应用示例
You're choosing batteries for your portable station. You consider NiMH for your handheld (rechargeable), Li-ion for your tablet (rechargeable), and Lead-acid for your base station backup (rechargeable). All three types can be recharged many times, making them economical choices for different applications.
错误选项分析
Option A: Incorrect. While NiMH is rechargeable, the question asks which are rechargeable, and all three listed are rechargeable, so this is incomplete. Option B: Incorrect. While Li-ion is rechargeable, the question asks which are rechargeable, and all three listed are rechargeable, so this is incomplete. Option C: Incorrect. While Lead-acid is rechargeable, the question asks which are rechargeable, and all three listed are rechargeable, so this is incomplete.
知识点
Rechargeable batteries, NiMH, Lithium-ion, Lead-acid
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.