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Alstom Transportation
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I appeared for an interview before Jul 2019.
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posted on 17 Nov 2021
I applied via Campus Placement and was interviewed before Nov 2020. There were 3 interview rounds.
Gears are mechanical components that transmit power and motion between rotating shafts. There are various types of gears.
Spur gears are the most common type and have straight teeth.
Helical gears have angled teeth and provide smoother operation.
Bevel gears transmit power between shafts that are not parallel.
Worm gears have a screw-like thread and are used for high reduction ratios.
Planetary gears have a central gear tha...
Stress is the force applied per unit area, while strain is the deformation caused by stress.
Stress is measured in units of force per unit area, such as pounds per square inch (psi) or newtons per square meter (N/m²).
Strain is the ratio of the change in length or shape of an object to its original length or shape.
Stress and strain are related by the material's modulus of elasticity, which is a measure of how much the ma...
A centrifugal pump is a mechanical device that uses centrifugal force to transport fluids. There are two types: radial and axial.
Centrifugal pumps are commonly used in industrial and domestic applications.
Radial pumps have a volute casing and are used for low flow and high head applications.
Axial pumps have a propeller and are used for high flow and low head applications.
Centrifugal pumps are easy to install and mainta...
SI and CI engines are types of internal combustion engines used in vehicles and machinery.
SI engine stands for Spark Ignition engine, also known as gasoline engine.
CI engine stands for Compression Ignition engine, also known as diesel engine.
SI engines use a spark plug to ignite the fuel-air mixture, while CI engines use compression to ignite the fuel.
SI engines are commonly used in cars, motorcycles, and small machine...
Knocking is a phenomenon where the air-fuel mixture in the engine cylinder ignites spontaneously before the spark plug fires.
Knocking is also known as detonation or pinging.
It can cause engine damage if not addressed.
It occurs when the air-fuel mixture in the cylinder ignites prematurely due to high pressure and temperature.
It can be caused by low-quality fuel, incorrect ignition timing, or engine overheating.
To preven...
posted on 26 Jul 2021
A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle. An AHU (Air Handling Unit) is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning (HVAC) system.
Chillers are commonly used in commercial and industrial buildings to cool water or other fluids for air conditioning or process cooling.
AHUs are responsible for con...
I applied via Company Website
Answering questions on Vogele paver screed function and diesel engine BS iv & BS VI
Vogele paver screed function involves leveling and compacting asphalt or concrete surfaces
Temper/pressure bar applications involve adjusting the temperature and pressure of the screed to achieve desired results
BS IV and BS VI are emission standards for diesel engines, with BS VI being more stringent and requiring advanced technology to r...
Specification of machinery refers to the detailed requirements and characteristics of a machine or equipment.
Includes dimensions, materials, performance criteria, and safety features
Should be clearly defined to ensure proper design and functionality
Examples: maximum load capacity, operating temperature range, power consumption
posted on 7 Aug 2021
I applied via Company Website and was interviewed in Feb 2021. There were 5 interview rounds.
I applied via Job Portal and was interviewed in Oct 2022. There were 4 interview rounds.
Aptitude test is very important for test
Group discussion share personal thinking knowledge
posted on 2 Mar 2024
I appeared for an interview in Feb 2024.
Automation is the use of technology to perform tasks with minimal human intervention.
Automation involves the use of machines, computers, or robots to complete tasks.
It can increase efficiency, accuracy, and productivity in various industries.
Examples include automated assembly lines in manufacturing, self-checkout machines in retail, and automated email responses in customer service.
posted on 7 Apr 2024
I applied via Campus Placement and was interviewed in Oct 2023. There was 1 interview round.
First angle projection is a method of creating engineering drawings where the object is projected onto a plane in front of it.
In first angle projection, the object is placed in the first quadrant of the viewing plane.
The object is projected onto the plane from the perspective of the object looking towards the plane.
Commonly used in Europe and Asia, while third angle projection is more common in the United States.
Helps ...
The first law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted.
Energy can be transferred between systems or converted from one form to another.
The total energy in a closed system remains constant.
Mathematically expressed as: ΔU = Q - W, where ΔU is the change in internal energy, Q is heat added to the system, and W is work done by the system.
Example: When a gas is compr...
Entropy is a measure of disorder or randomness in a system.
Entropy is a thermodynamic property that increases with the amount of disorder in a system.
It is a measure of the unavailable energy in a closed thermodynamic system that is also usually considered to be a measure of the system's disorder.
Entropy can be thought of as a measure of the number of specific ways in which a system may be arranged, often interpreted a...
posted on 6 Jun 2022
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