Which of the following is NOT a type of electrical load in a power system?

• A. Resistive
• B. Inductive
• C. Capacitive
• D. Thermal

Answer: (D)

In a power system, the types of electrical loads are typically categorized into resistive, inductive, and capacitive. Each of these plays a significant role in how equipment operates and interacts with the power supply.

Resistive loads are those that convert electrical energy into heat. Common examples include electric heaters and incandescent light bulbs. Their power consumption is straightforward, as the current and voltage are in phase.

Inductive loads, on the other hand, involve electrical devices that create magnetic fields when current passes through them. This includes motors and transformers. Inductive loads often result in a lagging power factor, where the current lags behind the voltage.

Capacitive loads are associated with devices that store energy in electric fields, such as capacitors and some types of lighting. They typically lead to a leading power factor, which can help counteract the lag associated with inductive loads in a system.

Thermal, while it may seem relevant due to its association with temperature and energy, is not classified as a type of electrical load. Instead, thermal systems often refer to heating processes, rather than a specific load category like resistive, inductive, or capacitive. Therefore, since thermal does not fit within the standardized classifications of electrical loads, it is