ABB Diploma Trainee Engineer Interview Questions and Answers

Which is better between electric and fuel driven vehicles

Machine design, CAD, Strength of Machines

Q1. Various thermodynamic processes,
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Thermodynamic processes are various ways in which energy can be transferred to or from a system.
• Isothermal process: constant temperature

• Adiabatic process: no heat transfer

• Isobaric process: constant pressure

• Isochoric process: constant volume

• Examples: carnot cycle, rankine cycle, stirling cycle
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Q2. Factor of safety
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Factor of safety is the ratio of the maximum stress a material can withstand to the actual stress it is subjected to.
• It is used to ensure the safety and reliability of a design.

• It is calculated by dividing the ultimate strength of a material by the maximum stress it is expected to experience.

• A higher factor of safety indicates a more reliable design.

• Factors of safety vary depending on the application and industry.

• For e...read more
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Q3. What is entropy and real life example
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Entropy is a measure of disorder or randomness in a system.
• Entropy increases with time in a closed system

• A messy room has higher entropy than a clean room

• Melting of ice is an example of increase in entropy

• Burning of wood is another example of increase in entropy
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Q4. What is Otto cycle
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Otto cycle is a four-stroke combustion cycle used in spark-ignition engines.
• It consists of four processes: intake, compression, power, and exhaust.

• During the intake stroke, the fuel-air mixture is drawn into the cylinder.

• In the compression stroke, the mixture is compressed to a high pressure and temperature.

• The power stroke is where the spark plug ignites the mixture, causing it to expand and push the piston down.

• Final...read more
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Q1. Engineering Basics
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Q1. Technical questions related to the previous experience
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Q1. Transmission system and types of drives
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Transmission system is responsible for transmitting power from the engine to the wheels. Types of drives include manual, automatic, and CVT.
• Transmission system transfers power from engine to wheels

• Manual transmission requires driver to shift gears

• Automatic transmission shifts gears automatically

• CVT (Continuously Variable Transmission) uses a belt and pulley system to provide seamless gear changes

• Other types of drives i...read more
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Q1. Gd&t, Surface roughnesss
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