Vaaman Engineers Supervisor Interview Questions and Answers

Q1. What are the common welding process?
Ans. 
Common welding processes include MIG, TIG, Stick, and Flux-Cored welding.
• MIG (Metal Inert Gas) welding uses a wire electrode and shielding gas to join metal.

• TIG (Tungsten Inert Gas) welding uses a tungsten electrode and filler metal to join metal.

• Stick welding uses a consumable electrode coated in flux to join metal.

• Flux-Cored welding uses a wire electrode with a flux core to join metal.

• Other common welding processes i...read more
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Q2. What are the tests conducted on welding joints?
Ans. 
Tests conducted on welding joints
• Visual inspection

• Dye penetrant testing

• Radiographic testing

• Ultrasonic testing

• Magnetic particle testing

• Tensile testing

• Bend testing
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Q3. What is submerged arc welding process?
Ans. 
Submerged arc welding is a process where an arc is maintained between a consumable electrode and the workpiece under a blanket of granular flux.
• The process is used for welding thick sections of steel.

• The granular flux shields the weld from atmospheric contamination.

• The consumable electrode is continuously fed into the weld pool.

• The process is commonly used in shipbuilding, pipeline construction, and pressure vessel fab
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Q4. Procedure of rectification for defected welding joints?
Ans. 
Defected welding joints can be rectified through a process of cutting, grinding, and rewelding.
• Identify the type and extent of the defect

• Cut out the defected portion of the joint

• Grind the edges of the remaining joint to prepare for rewelding

• Reweld the joint using appropriate welding techniques and materials

• Perform non-destructive testing to ensure the quality of the repaired joint
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Q1. About boiler operation
Ans. Details of Startup and shutdown procedure. Emergency handling and coal classification.
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Q2. Boiler efficiency and how to overcome the factors affecting efficiency
Ans. 
Boiler efficiency is the measure of how effectively a boiler converts fuel into steam. Factors affecting efficiency can be overcome by proper maintenance and optimization.
• Regular cleaning and maintenance of the boiler to remove soot and scale buildup

• Optimizing combustion by adjusting air-to-fuel ratio and ensuring proper fuel atomization

• Insulating boiler components to minimize heat loss

• Using economizers to recover wast...read more
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Normal aptitude test checking quants and general knowledge

There was a round of group discussion where two topics were given to the group. Group was supposed to select one of the topic and reach the conclusion within 10 minutes

Q1. Favourite subject and then questions from the subject
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Q2. Introduction and few questions based on it
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Q3. Basic questions related to oil and gas industry
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Q4. Short term and long term goals
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Q5. Situational questions to check how you'll respond
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