Railway Engineer

Railway Engineer Interview Questions and Answers

Updated 24 Sep 2023

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Q1. How match capacity consume a battery bank

Ans.

The capacity consumed by a battery bank depends on factors like load, battery size, efficiency, and discharge rate.

Capacity consumption is influenced by the load connected to the battery bank.
Battery size plays a crucial role in determining the total capacity available for consumption.
Efficiency of the battery bank affects how much capacity is actually utilized.
The discharge rate at which the battery bank is used also impacts the capacity consumed.
For example, a battery bank ...read more

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Q2. Why are used battery in a substations

Ans.

Used batteries in substations are used for backup power in case of power outages or emergencies.

Provide backup power during power outages
Ensure continuous operation of critical systems
Used in emergency situations
Help maintain stability of the electrical grid

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Q3. What type of motor we used

Ans.

Various types of motors are used in railway engineering, including traction motors, auxiliary motors, and HVAC motors.

Traction motors are used to propel the train and are typically electric motors such as DC or AC induction motors.
Auxiliary motors are used for powering various systems on the train, such as pumps, compressors, and fans.
HVAC motors are used for heating, ventilation, and air conditioning systems on the train to maintain passenger comfort.
Other types of motors ma...read more

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Q4. Concrete grads and their test foundations and under grounds structure etc

Ans.

Concrete grades are used for different applications in railway engineering, including foundations and underground structures.

Concrete grades are classified based on their compressive strength, such as M20, M30, etc.
Higher grade concrete is typically used for structures requiring higher strength, such as bridge foundations.
Lower grade concrete may be used for less critical applications, such as drainage channels.
Proper testing of concrete mix designs is essential to ensure the...read more

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Q5. Definition of current transformer

Ans.

A current transformer is a type of instrument transformer that is used to step down high currents to a lower, more manageable level for measurement or protection purposes.

Current transformers are typically used in conjunction with ammeters, wattmeters, and protective relays.
They have a primary winding that is connected in series with the circuit carrying the current to be measured, and a secondary winding that is connected to the measuring or protection device.
The secondary c...read more

Q6. Definition or lighting arrester

Ans.

A lighting arrester is a device used to protect electrical systems from lightning strikes by diverting the excess voltage to the ground.

Lightning arresters are also known as surge arresters or lightning rods.
They are typically installed at the top of buildings or structures to intercept lightning strikes.
The arrester works by providing a low-resistance path for the lightning current to flow safely to the ground, protecting the connected equipment.
Common types of lighting arre...read more

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Q7. What is insulator

Ans.

An insulator is a material that does not conduct electricity, heat, or sound.

Insulators are used to prevent the flow of electricity, heat, or sound in a specific direction.
Common examples of insulators include rubber, glass, plastic, and ceramic.
Insulators are important in electrical engineering to prevent short circuits and ensure safety.
They are also used in construction to reduce heat transfer and noise transmission.