Question
A shaft coupling is a device used to ________.
This question was previously asked in
RRB ALP 2018 CBT 2 Fitter Question Paper (21-Jan-2019) (Shift 3)
The correct answer is
connect two shafts together
Shaft Coupling Purpose Explained
A shaft coupling is a mechanical device primarily designed to connect two rotating shafts. Its main function is to transmit power from one shaft (usually driven by a motor or engine) to another shaft (which drives a machine or component).
Understanding Coupling Functionality
- Primary Use: The core purpose of a shaft coupling is to join two shafts end-to-end. This connection allows rotational motion and torque to be transferred between them.
- Power Transmission: Couplings are essential components in transmitting mechanical power, ensuring that the driven shaft rotates along with the driving shaft.
Why Other Options Are Incorrect
- Options suggesting a change in the shaft's direction or rotation are incorrect. Couplings transmit motion, they don't inherently change it.
- While specialized setups exist, the standard definition and primary function of a shaft coupling is not to connect three shafts simultaneously.
Therefore, the fundamental role of a shaft coupling is to connect two shafts together.
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