Which term corresponds to a device that controls traction power in trains?

Which term corresponds to a device that controls traction power in trains?

• A. Brake Control Unit
• B. Traction Control Unit
• C. Insulated Joint
• D. Ticket Vending Machine

Answer: (B)

The device that controls propulsion power delivered to a train’s traction motors is the Traction Control Unit. This unit interprets throttle input or automated control signals and modulates the power sent to the traction motors through the propulsion inverter, managing current and voltage to achieve smooth, safe acceleration while protecting equipment. It may also coordinate regenerative braking and anti-slip functions as needed. Brake Control Unit handles braking actions, not propulsion. An Insulated Joint is used to electrically isolate sections of track for signaling, and a Ticket Vending Machine is for passenger fares. Therefore, the Traction Control Unit is the correct term.

The device that controls propulsion power delivered to a train’s traction motors is the Traction Control Unit. This unit interprets throttle input or automated control signals and modulates the power sent to the traction motors through the propulsion inverter, managing current and voltage to achieve smooth, safe acceleration while protecting equipment. It may also coordinate regenerative braking and anti-slip functions as needed.

Brake Control Unit handles braking actions, not propulsion. An Insulated Joint is used to electrically isolate sections of track for signaling, and a Ticket Vending Machine is for passenger fares. Therefore, the Traction Control Unit is the correct term.