What are the three Tensioner types?

What are the three Tensioner types?

• A. Air Type; Cable Type; Magnetic Type
• B. Hydraulic Type; Pneumatic Type; Magnetic Type
• C. Coiled Type; Variable Type; Heavy Type
• D. Spring Type Tensioners; Weight Type (most common); Internal Spring Type

Answer: (D)

Tensioners in railroad systems are designed to keep a line or cable taut as conditions change, using simple mechanical means rather than external power. The three common types are Spring Type Tensioners, Weight Type (most common), and Internal Spring Type. A weight-type tensioner uses a hanging mass to apply a constant pulling force, making it reliable and easy to inspect, which is why it’s the most common in field setups. Spring-type tensioners rely on a coil spring to apply tension and compensate for slight length changes, providing continuous force through movement. Internal spring type tensioners place the spring inside the unit for a compact, protected design with a predictable tension as the line stretches or moves. The other concepts listed aren’t standard categories for rail tensioning, since they rely on power sources or different mechanisms not typically used for these purpose-built devices.

Tensioners in railroad systems are designed to keep a line or cable taut as conditions change, using simple mechanical means rather than external power. The three common types are Spring Type Tensioners, Weight Type (most common), and Internal Spring Type. A weight-type tensioner uses a hanging mass to apply a constant pulling force, making it reliable and easy to inspect, which is why it’s the most common in field setups. Spring-type tensioners rely on a coil spring to apply tension and compensate for slight length changes, providing continuous force through movement. Internal spring type tensioners place the spring inside the unit for a compact, protected design with a predictable tension as the line stretches or moves. The other concepts listed aren’t standard categories for rail tensioning, since they rely on power sources or different mechanisms not typically used for these purpose-built devices.