What does RVDT stand for?

RVDT stands for Rotary Variable Differential Transformer, which is a type of electrical transformer that converts the angular displacement of a shaft into an electrical signal. This device works by utilizing the principles of electromagnetic induction and is known for its high resolution and linearity in output, making it suitable for precise measurements in various applications such as aerospace, robotics, and industrial machinery.

The RVDT operates by having a rotor that displaces within a stator, resulting in a differential voltage output that is proportional to the angular position of the rotor. This ability to accurately sense rotational movement is crucial in systems where precise control and feedback are required.

The other choices, while they include similar terms, do not accurately describe the specific technology or function of RVDTs. The terms "digital transformer" and "direct transformer" suggest functionalities that are not characteristic of RVDTs, which are inherently analog devices. The phrase "rotating variable differential transformer," although similar, does not match the standard terminology used in the industry. The correct term represents both the rotary movement and the differential aspect of the transformer, highlighting its operational essence.