Krishna Maruti Trainee Operating Engineer Interview Questions and Answers

Q1. What is the difference desil engine and petrol engine.
Ans. 
Diesel engines use compression ignition, while petrol engines use spark ignition, leading to differences in efficiency and performance.
• Diesel engines are generally more fuel-efficient than petrol engines due to higher compression ratios.

• Petrol engines typically provide higher power output and quicker acceleration compared to diesel engines.

• Diesel engines produce more torque at lower RPMs, making them suitable for heavy...read more
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Q2. How to work desil engine
Ans. 
A diesel engine operates by compressing air to ignite fuel, providing efficient power for various applications.
• Understand the diesel cycle: It involves intake, compression, power, and exhaust strokes.

• Check fuel quality: Use clean, high-quality diesel fuel to prevent engine issues.

• Monitor engine temperature: Ensure the engine operates within the optimal temperature range to avoid overheating.

• Perform regular maintenance:...read more
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Q1. Compuny work and department Questions
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Q1. Tool room Releted
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Q2. Polytechnic documents
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Self introduction of every person

Math, physics, biology

Q1. What is Hookes law?
Ans. 
Hookes law states that the force needed to extend or compress a spring by some distance is proportional to that distance.
• Hookes law is a principle of physics that states the force needed to extend or compress a spring by some distance is directly proportional to that distance.

• The formula for Hookes law is F = kx, where F is the force applied, k is the spring constant, and x is the displacement of the spring from its eq...read more
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Q2. Difference between ic and ec engine?
Ans. 
IC engines are internal combustion engines where fuel is burned internally, while EC engines are external combustion engines where fuel is burned externally.
• IC engines have combustion happening inside the engine, while EC engines have combustion happening outside the engine.

• Examples of IC engines include gasoline engines and diesel engines, while examples of EC engines include steam engines and Stirling engines.

• IC engi...read more
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Q3. Types of welding?
Ans. 
Types of welding include MIG, TIG, stick, and flux-cored welding.
• MIG welding uses a wire electrode and shielding gas to create a strong bond.

• TIG welding uses a tungsten electrode and inert gas for precise and clean welds.

• Stick welding uses a consumable electrode coated in flux to create a strong bond.

• Flux-cored welding uses a tubular wire filled with flux for outdoor and windy conditions.
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Q1. What is 5S? And describe it's
Ans. 
5S is a methodology used for organizing and maintaining a clean, efficient, and safe work environment.
• Sort: Separate necessary items from unnecessary items.

• Set in order: Arrange necessary items in a logical and efficient manner.

• Shine: Clean and inspect the work area regularly.

• Standardize: Establish standards and procedures for maintaining the first three S's.

• Sustain: Ensure the 5S system is consistently followed and im...read more
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Q2. What is welding?
Ans. 
Welding is a process of joining two or more pieces of metal together by melting and fusing them.
• Welding involves using heat to melt the base metal and a filler material to create a strong joint.

• Common welding techniques include arc welding, MIG welding, TIG welding, and spot welding.

• Welding is used in various industries such as construction, automotive, aerospace, and manufacturing.

• Proper safety precautions must be tak...read more
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Q1. What is your family background?
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Q2. Tell me about yourself.
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Q1. About your branch related questions
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