effective value

简明释义

有效价值

英英释义

例句

1.The effective value of the salary package includes bonuses and benefits.

薪资套餐的有效价值包括奖金和福利。

2.The effective value of the investment is higher than expected due to market fluctuations.

由于市场波动，这项投资的有效价值高于预期。

3.To determine the effective value of the project, we need to consider all associated costs.

要确定项目的有效价值，我们需要考虑所有相关成本。

4.After taxes, the effective value of my paycheck is significantly lower.

扣税后，我的工资单的有效价值显著降低。

5.The effective value of the currency exchange was calculated based on current rates.

该货币兑换的有效价值是根据当前汇率计算的。

作文

In the realm of mathematics and engineering, the term effective value refers to a quantity that represents the equivalent value of an alternating current (AC) or voltage in terms of its ability to produce heat. This concept is crucial for understanding how electrical systems work and how to measure their performance effectively. The effective value is often synonymous with the root mean square (RMS) value, which provides a way to calculate the average power delivered by an AC signal over time.To illustrate this concept, consider a simple example of an AC voltage waveform. Unlike direct current (DC), which flows steadily in one direction, AC voltage varies sinusoidally over time. If we were to measure the voltage at different points in time, we would find that it fluctuates between positive and negative values. To determine the effective value, we need to calculate the RMS value of this waveform.The formula for calculating the RMS value of a sine wave is straightforward: it is equal to the peak voltage divided by the square root of two. This calculation gives us a single value that can be used to compare the AC voltage's heating effect to that of a DC voltage. For instance, if we have a sine wave with a peak voltage of 10 volts, the effective value would be approximately 7.07 volts. This means that a 10-volt peak AC voltage would produce the same amount of heat in a resistive load as a 7.07-volt DC voltage.Understanding the effective value is essential not only for electrical engineers but also for anyone involved in the design and analysis of electrical systems. It allows for more accurate calculations and comparisons between different types of currents and voltages. Furthermore, it plays a significant role in safety considerations, as using the effective value helps ensure that electrical devices operate within safe limits, preventing overheating and potential failures.Moreover, the concept of effective value extends beyond just electrical engineering. In various fields such as economics and statistics, the term is used to describe a measure that reflects the true impact or performance of an entity. For example, in finance, the effective value of an investment may take into account factors such as inflation, taxes, and fees to provide a clearer picture of its actual return. This usage highlights the versatility of the term and its importance in different contexts.In conclusion, the effective value is a vital concept that bridges the gap between theoretical measurements and practical applications. Whether in electrical engineering, finance, or other fields, understanding the effective value allows individuals and professionals to make informed decisions based on accurate data. As technology continues to advance and our reliance on electrical systems grows, the significance of the effective value will undoubtedly remain a cornerstone in both education and industry.

在数学和工程领域，术语有效值指的是一种量，它表示交变电流（AC）或电压在产生热量方面的等效值。这个概念对于理解电气系统的工作原理以及如何有效地测量其性能至关重要。有效值通常与均方根（RMS）值同义，它提供了一种计算AC信号随时间传递的平均功率的方法。为了说明这个概念，考虑一个简单的交变电压波形的例子。与稳态流动的直流电（DC）不同，交流电压随着时间而呈正弦波动。如果我们在不同的时间点测量电压，我们会发现它在正值和负值之间波动。为了确定有效值，我们需要计算该波形的RMS值。计算正弦波的RMS值的公式很简单：它等于峰值电压除以根号二。这一计算给我们一个单一的值，可以用来将AC电压的加热效果与DC电压进行比较。例如，如果我们有一个峰值电压为10伏特的正弦波，则有效值大约为7.07伏特。这意味着10伏特的峰值AC电压将在一个电阻负载中产生与7.07伏特的DC电压相同的热量。理解有效值对于电气工程师以及任何参与电气系统设计和分析的人来说都是必不可少的。它允许更准确的计算和比较不同类型的电流和电压。此外，它在安全考虑中也起着重要作用，因为使用有效值有助于确保电气设备在安全限制内运行，防止过热和潜在故障。此外，有效值的概念超越了电气工程。在经济学和统计学等各个领域，该术语用于描述反映实体真实影响或表现的度量。例如，在金融中，投资的有效值可能考虑通货膨胀、税收和费用等因素，以提供其实际回报的更清晰图景。这种用法突显了该术语的多功能性及其在不同背景下的重要性。总之，有效值是一个重要的概念，它架起了理论测量与实际应用之间的桥梁。无论是在电气工程、金融还是其他领域，理解有效值使个人和专业人士能够基于准确的数据做出明智的决策。随着技术的不断进步和我们对电气系统的依赖不断增加，有效值的重要性无疑将继续成为教育和行业的基石。