Lohia Group Manager SCM Interview Questions and Answers

Q1. Engineering Basics
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Q1. Technical questions related to the previous experience
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Machine design, CAD, Strength of Machines

Q1. Various thermodynamic processes,
Ans. 
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. Transmission system and types of drives
Ans. 
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. Under which stress spring fails?
Ans. 
A spring fails under stress beyond its elastic limit.
• A spring fails when it is subjected to stress beyond its elastic limit.

• The elastic limit is the maximum stress a spring can withstand without permanent deformation.

• Factors affecting the failure of a spring include material properties, design, and operating conditions.

• Examples of spring failure include fracture, fatigue, and creep.

• Fracture occurs when the spring is su...read more
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Q2. What is synchronous speed of motor?
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Synchronous speed of a motor is the speed at which the rotating magnetic field produced by the stator rotates.
• It is determined by the number of poles and frequency of the power supply.

• It is the speed at which the motor would run if there was no load or slip.

• It is expressed in revolutions per minute (RPM).
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Q1. Name and technical education
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Q2. Qualification required for this job
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Q3. Technical knowledge for this role
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Q1. I was selected for autocad plant 3d designer. Basic pump related questions were asked. Was asked to draw pump suction and discharge piping with its components.
Ans. Tool test involved basic drafting activity.
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Was asked for drafting support