Alstom Transportation Graduate Engineer Trainee (Get) Interview Questions and Answers for Freshers

25 KV AC is more efficient for railways due to lower transmission losses and higher power carrying capacity.

• 25 KV AC has lower transmission losses compared to 750V DC

• 25 KV AC can carry higher power compared to 750V DC

• 25 KV AC is more suitable for long distance and high-speed trains

• 750V DC is more suitable for urban and suburban railways

• Examples: Indian Railways uses 25 KV AC for long distance and high-speed trains, while Mumbai suburban railways use 750V DC

Induction motors are replacing DC motors for traction purposes due to their higher efficiency, lower maintenance, and simpler control.

• Induction motors have higher efficiency compared to DC motors, resulting in reduced energy consumption.

• Induction motors require less maintenance as they have no brushes or commutators that wear out over time.

• Induction motors have simpler control systems, making them easier to operate and maintain.

• Induction motors are more cost-effective and rea...read more

The speed-torque curve of an induction motor describes the relationship between motor speed and torque.

• The speed-torque curve shows how the motor's torque output varies with changes in speed.

• At low speeds, the motor can produce high torque, but as the speed increases, the torque decreases.

• The curve typically has a peak torque value called the breakdown torque.

• Beyond the breakdown torque, the motor enters the field weakening region where the torque decreases rapidly.

• The speed-...read more

Civil engineering is the backbone of infrastructure development and plays a crucial role in shaping the world we live in.

• Civil engineering involves designing, constructing, and maintaining infrastructure such as buildings, roads, bridges, and water systems.

• It offers a diverse range of career opportunities, from project management to structural design.

• Civil engineers have the ability to make a positive impact on society by improving the quality of life for people.

• It is a chall...read more

Kirchhoff's Voltage Law states that the sum of all voltages in a closed loop is equal to zero.

• Also known as KVL

• Used to analyze circuits and calculate unknown voltages

• Can be applied to both DC and AC circuits

• Helps in understanding the behavior of circuits