PPS International Mechanical Engineer Interview Questions and Answers

Q1. What is formula of torque
Ans. 
Torque is the product of force and distance from the axis of rotation.
• Torque = Force x Distance

• The SI unit of torque is Newton-meter (Nm)

• Torque is a measure of the rotational force applied to an object
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Q1. Boiler startup producer
Ans. 
Boiler startup producer is a device used to ignite the fuel and start the combustion process in a boiler.
• Boiler startup producer is also known as an ignition system.

• It is responsible for producing a spark or flame to ignite the fuel.

• There are different types of startup producers such as pilot lights, electric starters, and oil guns.

• The type of startup producer used depends on the type of fuel and boiler being used.

• Prop...read more
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Q2. Boiler shutdown producer
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Q3. What is draft in boiler
Ans. 
Draft in a boiler refers to the flow of air or gases through the combustion chamber and flue gas passages.
• Draft is created by a difference in pressure between the inside and outside of the boiler.

• It is necessary for proper combustion and efficient operation of the boiler.

• There are two types of draft: natural draft and forced draft.

• Natural draft is created by the buoyancy of hot gases, while forced draft is created by m...read more
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Q4. Cooling tower performance
Ans. 
Cooling tower performance is measured by its ability to remove heat from a process stream.
• Cooling tower performance is affected by factors such as air flow rate, water flow rate, and temperature difference between the process stream and cooling water.

• The efficiency of a cooling tower can be improved by increasing the surface area of the heat transfer media, using a more efficient fan, or optimizing the water distributi...read more
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Q5. Pump lineup and its efficiency
Ans. 
Pump lineup is crucial for efficient operation. Proper selection and maintenance can improve efficiency.
• Pump lineup should be selected based on the required flow rate and head

• Centrifugal pumps are commonly used for low viscosity fluids while positive displacement pumps are used for high viscosity fluids

• Efficiency can be improved by proper maintenance such as regular cleaning and lubrication

• Variable frequency drives can...read more
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Q1. I applied via Recruitment Consultant and was interviewed before sem 2021.
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Q2. How many Engineering Documents will be process if you handle EPC project?
Ans. 
The number of engineering documents processed in an EPC project depends on the project scope and complexity.
• The number of engineering documents can range from a few hundred to several thousand.

• Documents include design drawings, specifications, calculations, reports, and contracts.

• The project size, type, and location can also impact the number of documents.

• Efficient document management is crucial for project success and...read more
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Q1. Mechanical engineer basic questions
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Q2. Stres straincire
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Q1. Tell us about piping
Ans. 
Piping refers to the system of pipes used to transport fluids or gases from one location to another.
• Piping is used in a variety of industries, including oil and gas, chemical, and power generation.

• It can be made from a variety of materials, including steel, copper, and plastic.

• Piping systems can be complex and require careful design and installation to ensure proper flow and pressure.

• Maintenance and inspection of pipin...read more
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Q2. What is piping stress
Ans. 
Piping stress is the stress induced in a piping system due to various loads and forces.
• Piping stress can be caused by thermal expansion, pressure, weight, vibration, and seismic activity.

• It can lead to deformation, leakage, and failure of the piping system.

• Piping stress analysis is done to ensure the safe and reliable operation of the piping system.

• Factors such as material properties, pipe routing, and support design a...read more
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Q3. What are piping materials
Ans. 
Piping materials are the materials used for constructing pipes that transport fluids or gases.
• Piping materials can be metallic or non-metallic.

• Common metallic piping materials include carbon steel, stainless steel, copper, and aluminum.

• Non-metallic piping materials include PVC, CPVC, fiberglass, and HDPE.

• The choice of piping material depends on factors such as the type of fluid or gas being transported, temperature, pr
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Q1. Tell me about yourself.
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Q1. First question is tell me yourself
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