VOLTECH O AND M SERVICES Senior Engineer- Maintenance Interview Questions and Answers

Q1. Explain for pump
Ans. 
A pump is a mechanical device used to move fluids from one place to another.
• Pumps are commonly used in various industries such as oil and gas, water treatment, and manufacturing.

• They can be classified into different types based on their principle of operation, such as centrifugal pumps and positive displacement pumps.

• Pumps can be powered by electricity, engines, or even manual operation.

• They are essential for maintaini...read more
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Q2. Explain for types of valves
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There are four types of valves: gate valves, globe valves, ball valves, and butterfly valves.
• Gate valves are used to control the flow of fluid by raising or lowering a gate.

• Globe valves have a disc that moves up and down to control the flow of fluid.

• Ball valves use a rotating ball with a hole in it to control the flow of fluid.

• Butterfly valves have a disc that rotates to control the flow of fluid.
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Q3. Explain for screw pump
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A screw pump is a type of positive displacement pump that uses rotating screws to move fluid.
• Screw pumps are commonly used in various industries, including oil and gas, wastewater treatment, and food processing.

• They consist of two or more intermeshing screws that rotate in opposite directions, creating a vacuum and pushing the fluid through the pump.

• Screw pumps are known for their high efficiency, low noise levels, and...read more
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Q4. Gear box working
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Q5. How to work Fire engine with high pressure
Ans. 
Working with a fire engine under high pressure requires proper training and knowledge of the equipment.
• Ensure proper training on operating the fire engine with high pressure

• Understand the different components and controls of the fire engine

• Follow safety protocols and guidelines

• Maintain and inspect the fire engine regularly

• Practice efficient water management to maximize effectiveness

• Be aware of potential hazards and tak...read more
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Q6. PPE ALL QUESTIONS
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Q7. Safety questions
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Q8. Industrial safety
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Q9. What is PPE& full fome
Ans. 
PPE stands for Personal Protective Equipment. Full form refers to the complete expansion of an acronym or abbreviation.
• PPE is equipment worn to minimize exposure to hazards that can cause injuries or illnesses.

• Examples of PPE include safety helmets, gloves, goggles, masks, and protective clothing.

• Full form refers to the complete expansion of an acronym or abbreviation, such as PPE (Personal Protective Equipment).
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Q1. Every day parameters reading write the substation logbook, and also mcc,HV, LV, switch gear and transform reading also write the substation logbook, and we are doing motor troubleshooting, Battery bank mai...read more
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Q2. Do you now the motor maintenance, Battery bank maintenance, Transformer maintenance, MCC, switch gear maintenance, Lighting maintenance
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Q1. Tell the working principle of industrial compressors
Ans. 
Industrial compressors work by increasing the pressure of a gas to create mechanical energy.
• Industrial compressors use a motor to draw in and compress gas, then release it at a higher pressure.

• The compressed gas can be used for various industrial applications such as powering pneumatic tools or HVAC systems.

• Common types of industrial compressors include reciprocating, rotary screw, and centrifugal compressors.
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Q2. Overhauling procedure of centrifugal pump
Ans. 
The overhauling procedure of a centrifugal pump involves disassembling, inspecting, repairing/replacing components, and reassembling the pump.
• Start by shutting off power to the pump and draining the system

• Remove the pump casing and impeller to access internal components

• Inspect components for wear, damage, or corrosion

• Repair or replace damaged components such as bearings, seals, or impeller

• Reassemble the pump, ensuring ...read more
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Q1. Explain for pump
Ans. 
A pump is a mechanical device that moves fluids or gases by applying mechanical force.
• Pumps are used in various industries such as water treatment, oil and gas, and manufacturing.

• There are different types of pumps including centrifugal pumps, positive displacement pumps, and diaphragm pumps.

• Pumps work by creating a pressure difference to move the fluid from one place to another.

• Regular maintenance of pumps is essential...read more
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Q2. Explain for types of valves
Ans. 
There are four main types of valves: ball valves, gate valves, globe valves, and butterfly valves.
• Ball valves: used for on/off control without pressure drop, commonly used in gas and liquid applications

• Gate valves: used for on/off control with low pressure drop, commonly used in water and sewage systems

• Globe valves: used for regulating flow, commonly used in high-pressure steam systems

• Butterfly valves: used for on/off ...read more
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Q3. Explain for screw pump
Ans. 
A screw pump is a type of positive displacement pump that uses rotating screws to move fluid along the screw's axis.
• Screw pumps are known for their high efficiency and ability to handle high viscosity fluids.

• They are commonly used in industrial applications such as oil and gas, wastewater treatment, and food processing.

• Screw pumps can be classified into different types based on the number of screws, such as single scre
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Q4. Gear box working
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Q5. How to work Fire engine with high pressure
Ans. 
To work a fire engine with high pressure, ensure proper training, follow safety protocols, adjust pressure settings, and use appropriate nozzles.
• Ensure proper training on how to operate the fire engine with high pressure

• Follow safety protocols to prevent accidents and injuries

• Adjust pressure settings according to the specific situation and requirements

• Use appropriate nozzles to control the flow and direction of water

• Re...read more
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Q6. PPE ALL QUESTIONS
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Q7. Safety questions
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Q8. Industrial safety
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Q9. What is PPE& full fome
Ans. 
PPE stands for Personal Protective Equipment. It includes items like helmets, gloves, goggles, and full fome refers to the full form of PPE.
• PPE stands for Personal Protective Equipment

• It includes items like helmets, gloves, goggles, etc.

• Full fome refers to the full form of PPE, which is Personal Protective Equipment
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Q1. Fitter iti experience 4year Vartman job Mayur uniquoters ltd dhodsar
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Th work to mantiesh or sift hand or

Th work Mayur Unikoters ltd dhodsar

Haad working and Berk daun work

Q1. B.a faainl fitter iti
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Q2. Experience 4 year Mayur Unikoters ltd dhodsar
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Q1. By clicking and Berk daun work
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Q2. What are lagvej by hindi to english
Ans. 
Lagvej is not a Hindi word. It has no meaning in English.
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General apptutude questions like tume rate ,work rate-basic

Q1. For any interview cv should be as per company profile. Trying to explore within to mention in cv related will help. I believe initial phase is crucial and in our hand, we should drive it towards our known ...read more
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Q2. As my recruitment was for refinery questions were-types of pumps,types of compressors.
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Q3. Subjects like fluid dynamics,Heat transfer ,mechanics of solids, industrial engineering will help.
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Q1. It is mostly regarding ourselves,our behavior. One should try to be as clear ,reasonable as possible.
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