Diffusion Engineers Mechanical Maintenance Engineer Interview Questions and Answers

Q1. How to calculate Boiler direct & indirect efficiency ?
Ans. 
Boiler efficiency can be calculated by measuring the heat input and heat output of the boiler.
• Calculate the heat input by measuring the fuel flow rate, fuel calorific value, and fuel consumption.

• Calculate the heat output by measuring the steam flow rate and steam enthalpy.

• Direct efficiency = (Heat output / Heat input) * 100%

• Indirect efficiency = Direct efficiency * Boiler efficiency of other components (like economizer
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Q2. What is the monthly maintenance cost of your section ?
Ans. 
The monthly maintenance cost of my section is approximately $10,000.
• The monthly maintenance cost includes expenses for spare parts, labor, equipment rental, and utilities.

• Regular maintenance tasks such as lubrication, inspections, and repairs contribute to the overall cost.

• Cost may vary depending on the size of the section, age of equipment, and frequency of maintenance activities.
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Q1. Walking interview
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Q2. Conveyor belt line mechanical engineer
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Q1. Conveyor belt & screen & crusher mechanical maintenance work
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Q1. What is use of gear box
Ans. 
Gear box is used to change the speed and torque of a mechanical system.
• Used to increase or decrease speed

• Provides torque multiplication

• Changes direction of rotation

• Helps in adapting power source to the load

• Commonly used in vehicles, industrial machinery, and power transmission systems
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Q1. How many pressure to required to operate a hydraulic equipment
Ans. 
The number of pressure required to operate a hydraulic equipment depends on the specific equipment and its design.
• The number of pressure required can vary depending on the size and type of hydraulic equipment.

• Some hydraulic equipment may require only one pressure to operate, while others may require multiple pressures for different functions.

• It is important to refer to the equipment's manual or specifications to determ
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