Introduction to New Light Rail Vehicles

Maximum design speed train on the track___________.

• 30 km/h

• 60 km/h

• 70 km/h

• 80 km/h

What is the name module for switching traction inverter?

• Diode

• Reactor

• Contactor

• Transistor

Which statement is TRUE about train operation-controlled modes?

• Cutout Mode control operation by CBTC. This mode allows for manual intervention and is typically used in specific scenarios where automated control is not feasible.

• Supervised Automatic Train Operation is fixed maximum speed. This means that while the train operates automatically, it adheres to a predetermined speed limit set for safety and efficiency.

• CBTC system will not provide line over-speed protection in Cutout Mode. This is a critical point as it indicates that in this mode, the safety features that prevent excessive speed are disabled, which can lead to potential hazards.

• Automatic Train Operation mode driver needs to close vehicle doors manually. This statement highlights the limitations of automation, where certain manual tasks still require human intervention.

Which traction mode operated coupling train?

• Cutout Mode.

• Restricted Manual

• Automatic Train Operation

• Automatic Train Protection Manual

How many EHU under the EBCU control each Vehicle?

• 1 unit

• 2 unit

• 3 unit

• 4 unit

Which main component in DC/AC inverter circuit?

• Electrolytic capacitor

• Automatic transformer

• Conventional transistor

• Insulated-gate bipolar transistor.

What type of current collector used for LRT Ampang Line?

• Side collection

• Bottom collection

• Trolley Collector

• Pantograph Collector

Function Filter Reactor used for____________.

• Filtering current flow. This is the primary function of a filter reactor, as it helps to remove unwanted harmonics and ensures a smooth current flow.

• Supply power to traction motor. While filter reactors are involved in power systems, their main role is not to supply power directly to motors.

• Controlling the rotational speed motor. Filter reactors do not directly control motor speed; they are more about managing current quality.

• Transforming DC voltage into three-phase AC. This function is typically performed by inverters, not filter reactors.

ID vehicle 4215. Form ID vehicle what mean 21?

• Phase

• No LRV

• No Car

• No ID

What type of method control mode for Variable Voltage Variable Frequency (VVVF)?

• Insulated-gate bipolar transistor (IGBT)

• Pulse width modulation (PWM) mode

• Direct torque control (DTC)

• Field-oriented control (FOC)