instantaneous power

简明释义

瞬时功率

英英释义

例句

1.The instantaneous power (瞬时功率) in a resistive circuit is always positive, indicating energy consumption.

在电阻电路中，instantaneous power (瞬时功率) 始终为正，表示能量消耗。

2.In electrical engineering, instantaneous power (瞬时功率) can vary significantly with time due to changes in load conditions.

在电气工程中，由于负载条件的变化，instantaneous power (瞬时功率) 可能会随时间显著变化。

3.To analyze the performance of an AC circuit, engineers often calculate the instantaneous power (瞬时功率) at different points in time.

为了分析交流电路的性能，工程师们通常会在不同时间点计算instantaneous power (瞬时功率)。

4.The instantaneous power (瞬时功率) delivered by the generator must be monitored to ensure it meets the demand.

必须监测发电机提供的instantaneous power (瞬时功率)，以确保其满足需求。

5.The formula for calculating instantaneous power (瞬时功率) is P = VI, where P is power, V is voltage, and I is current.

计算instantaneous power (瞬时功率) 的公式是 P = VI，其中 P 是功率，V 是电压，I 是电流。

作文

In the realm of physics and engineering, the concept of instantaneous power plays a crucial role in understanding how energy is transferred and utilized in various systems. Instantaneous power refers to the amount of power being delivered at a specific moment in time. This is particularly important when analyzing systems that involve variable loads or changing conditions, such as electrical circuits, engines, and mechanical systems. To grasp the significance of instantaneous power, we must first understand what power means in a general sense. Power is defined as the rate at which work is done or energy is transferred. In mathematical terms, power (P) can be expressed as the derivative of work (W) with respect to time (t): P = dW/dt. However, when we talk about instantaneous power, we are looking at power at a precise moment rather than over an interval of time.For instance, consider an electric circuit where a current flows through a resistor. The instantaneous power delivered to the resistor can be calculated using the formula P = I^2R, where I is the instantaneous current and R is the resistance. This means that if the current fluctuates, the instantaneous power will also change accordingly. Understanding this concept is vital for designing electrical systems that are efficient and safe.Additionally, in mechanical systems, instantaneous power can be calculated by multiplying the force exerted on an object by its velocity at a given moment: P = Fv. This relationship highlights how power is not just a static quantity but one that varies with the dynamics of the system. For example, in a car engine, the instantaneous power output can vary significantly based on the throttle position, speed, and load conditions.The implications of instantaneous power extend beyond theoretical calculations; they have practical applications in various fields. In renewable energy systems, for example, understanding instantaneous power generation from solar panels or wind turbines can help optimize energy storage solutions and improve grid stability. By monitoring the instantaneous power output, engineers can make informed decisions about when to store energy or draw from the grid, ensuring a balanced supply and demand.Moreover, in the context of electrical engineering, devices such as power meters measure instantaneous power to provide real-time feedback on energy consumption. This information is invaluable for both consumers and utility companies, as it allows for better energy management and cost savings.In conclusion, the concept of instantaneous power is fundamental to our understanding of energy transfer in various systems. Whether in electrical circuits, mechanical systems, or renewable energy applications, recognizing how power varies at any given moment enables engineers and scientists to design more efficient and effective systems. As technology continues to advance, the importance of accurately measuring and understanding instantaneous power will only grow, paving the way for innovations that enhance our energy landscape and overall quality of life.

在物理和工程领域，瞬时功率的概念在理解能量如何在各种系统中传递和利用方面发挥着至关重要的作用。瞬时功率指的是在特定时刻所传递的功率。这在分析涉及可变负载或变化条件的系统时尤为重要，例如电路、发动机和机械系统。要理解瞬时功率的重要性，我们首先必须了解功率在一般意义上的定义。功率被定义为做功或能量转移的速率。在数学上，功率（P）可以表示为功（W）对时间（t）的导数：P = dW/dt。然而，当我们谈论瞬时功率时，我们关注的是在一个精确时刻的功率，而不是在一段时间内的功率。例如，考虑一个电路，其中电流流过一个电阻。施加在电阻上的瞬时功率可以使用公式P = I^2R来计算，其中I是瞬时电流，R是电阻。这意味着如果电流波动，瞬时功率也会相应地变化。理解这个概念对于设计高效和安全的电气系统至关重要。此外，在机械系统中，瞬时功率可以通过将施加在物体上的力与其在给定时刻的速度相乘来计算：P = Fv。这个关系突显了功率不仅仅是一个静态量，而是随着系统动态而变化的。例如，在汽车发动机中，瞬时功率输出可能会根据油门位置、速度和负载条件而显著变化。瞬时功率的影响超出了理论计算；它在各个领域都有实际应用。例如，在可再生能源系统中，理解太阳能电池板或风力涡轮机的瞬时功率发电可以帮助优化能量存储解决方案并改善电网稳定性。通过监测瞬时功率输出，工程师可以就何时存储能量或从电网抽取能量做出明智的决策，以确保供需平衡。此外，在电气工程的背景下，诸如功率计等设备测量瞬时功率以提供关于能量消耗的实时反馈。这些信息对消费者和公用事业公司都非常宝贵，因为它使得更好的能源管理和节省成本成为可能。总之，瞬时功率的概念是我们理解各种系统中能量转移的基础。无论是在电路、电气系统还是可再生能源应用中，认识到功率在任何给定时刻的变化使得工程师和科学家能够设计出更高效、更有效的系统。随着技术的不断进步，准确测量和理解瞬时功率的重要性只会增加，为增强我们的能源格局和整体生活质量的创新铺平道路。