10+ Junior Service Engineer Interview Questions and Answers

The answer provides information on working of a 4-stroke engine, definition of clutch, and working operations of battery and radiator.

• A 4-stroke engine works on the principle of intake, compression, power, and exhaust strokes.

• The clutch is a mechanical device that connects and disconnects the engine from the transmission.

• The battery provides electrical power to start the engine and operate various electrical components.

• The radiator helps in cooling the engine by dissipating h...read more

Wabtec Corporation's mission is to provide innovative solutions for the transportation industry, guided by their vision of being a global leader in rail and industrial markets.

• Wabtec's mission is to provide innovative solutions for the transportation industry.

• Their vision is to be a global leader in rail and industrial markets.

• Values include integrity, customer focus, innovation, and teamwork.

• Examples of values in action: developing cutting-edge technology for trains, priorit...read more

The critical components of diesel locomotives include engine, transmission, fuel system, cooling system, and electrical system.

• Engine: the heart of the locomotive, responsible for generating power

• Transmission: transfers power from the engine to the wheels

• Fuel system: supplies diesel fuel to the engine for combustion

• Cooling system: prevents the engine from overheating

• Electrical system: controls various functions such as lighting and communication

The braking system of diesel locomotives is crucial for safe operation and consists of various components.

• The braking system of diesel locomotives typically includes air brakes, dynamic brakes, and sometimes even regenerative brakes.

• Air brakes use compressed air to apply pressure to the brake pads, slowing down the locomotive.

• Dynamic brakes convert the locomotive's traction motors into generators, creating resistance to slow down the train.

• Regenerative brakes capture and stor...read more

Safety policy is a set of rules and guidelines implemented by an organization to ensure the safety and well-being of employees and customers.

• Safety policy outlines the procedures and protocols to be followed in order to prevent accidents and injuries.

• It includes guidelines for the proper use of equipment, handling of hazardous materials, and emergency response protocols.

• Safety policy also includes training programs for employees to ensure they are aware of safety procedures a...read more

Auxiliary systems in diesel locomotives support the main engine and provide additional functionalities.

• Auxiliary systems include air compressors, cooling systems, fuel systems, and electrical systems.

• Air compressors provide compressed air for braking and other pneumatic functions.

• Cooling systems prevent the engine from overheating.

• Fuel systems deliver fuel to the engine for combustion.

• Electrical systems power lights, controls, and other electrical components.

• Regular maintenan...read more

The cooling system of diesel locomotives is essential for maintaining optimal engine temperature and preventing overheating.

• The cooling system typically consists of a radiator, water pump, thermostat, and coolant.

• Coolant is circulated through the engine to absorb heat and then cooled in the radiator before returning to the engine.

• Regular maintenance of the cooling system, including checking coolant levels and inspecting for leaks, is crucial for efficient operation.

• Examples o...read more

The propulsion system of diesel locomotives is responsible for converting fuel into mechanical energy to move the train.

• Diesel engines power the locomotive by burning diesel fuel in cylinders to generate power

• The power generated is transmitted to the wheels through a transmission system

• The wheels then turn, propelling the train forward

• Modern diesel locomotives may also have electric propulsion systems for increased efficiency

Key Performance Indicators (KPIs) of Wabtec Corporation include revenue growth, profit margin, customer satisfaction, and on-time delivery.

• Revenue growth: Wabtec tracks the increase in revenue over a specific period of time.

• Profit margin: Wabtec monitors the percentage of profit made from sales.

• Customer satisfaction: Wabtec measures customer feedback and satisfaction levels.

• On-time delivery: Wabtec evaluates the percentage of orders delivered on time.