Lohia Group CNC Setter & Operator Interview Questions and Answers

Q1. Engine basic questions
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Q2. Flywheel used in a engine
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A flywheel is a mechanical device used in engines to store rotational energy and smooth out fluctuations in engine speed.
• Flywheels are typically made of steel or aluminum and are attached to the engine's crankshaft.

• They store energy during the power stroke and release it during the compression stroke to keep the engine running smoothly.

• Flywheels are also used in hybrid vehicles to store energy from regenerative braking...read more
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Q3. Used of flywheel, crankcase, AVM pre filter
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Flywheel, crankcase, and AVM pre filter are components used in internal combustion engines.
• Flywheel stores rotational energy and helps maintain engine speed during power strokes.

• Crankcase houses the crankshaft and other engine components.

• AVM pre filter is used to remove larger particles from the air before it enters the engine.

• These components are essential for the proper functioning of internal combustion engines.
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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. Basic Technical Questions
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Q2. What Skills do you have
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Q1. 1 Tell me about yourself. 2 What do you know about ISGEC. 3 why do you leave last job. 4 why do you wantwork here. 5 How many years experience you have. 6 What is your previous salary. 7 what is your s...read more
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Q1. 1 what is Design. 2 Tell me about GD&T 3 what is joints and its type. 4 tell me about all standards use in design. 5 What is failure. 6 Tell me about properties of material . 7 What is vernier caliper ...read more
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Design Engineer interview questions covering topics like design, GD&T, joints, standards, failure, material properties, vernier caliper, boiler, Bernoulli theorem, Pascal law, welding.
• Design is the process of creating a solution to a problem or need.

• GD&T (Geometric Dimensioning and Tolerancing) is a system for defining and communicating engineering tolerances.

• Joints are connections between two or more parts, types incl...read more
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Q2. What is 3d software.
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3D software is a type of computer program used to create, manipulate, and render three-dimensional images or animations.
• Allows users to design and model objects in a three-dimensional space

• Commonly used in industries such as architecture, engineering, animation, and gaming

• Examples include AutoCAD, SolidWorks, Blender, and Maya
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Q3. What is structure and how use for our.
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Structure in design engineering refers to the arrangement and organization of components to form a cohesive system.
• Structure in design engineering involves organizing components in a way that ensures functionality and efficiency.

• It helps in distributing loads and forces effectively throughout the system.

• Structural analysis is used to ensure that the design can withstand various loads and stresses.

• Examples include desig...read more
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Questions from transducer digital electronics

Q1. Explain your project
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Q1. I didn't selected for HR round
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General Aptitude test of 50 questions, need to clear in 1 hour

Q1. Technical question in academics, questions on final project, Pump & fluid related questions
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Q1. Regular HR questions
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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

Q1. Engineering Basics
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Q1. Technical questions related to the previous experience
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