BHEL Technician Apprentice Interview Questions and Answers

Q1. What is nickel plating
Ans. 
Nickel plating is a process of electroplating a layer of nickel onto a metal surface to enhance its appearance, corrosion resistance, and durability.
• Nickel plating involves immersing the metal object in a solution containing nickel ions and applying an electric current to deposit a layer of nickel onto the surface.

• It is commonly used to protect metal objects from corrosion and wear, as well as to improve their aestheti...read more
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Q2. What is cadmium plating
Ans. 
Cadmium plating is a process of electroplating a thin layer of cadmium onto a metal surface to provide corrosion resistance and improve lubricity.
• Cadmium plating is commonly used in aerospace and military applications.

• It is known for its excellent corrosion resistance, especially in saltwater environments.

• Cadmium plating also offers good lubricity, making it suitable for moving parts.

• The process involves immersing the ...read more
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EASY AND BASIC QUESTION FROM AGE , PROBABILITY AND STATS

Q1. LAWS OF THERMODYNAMICS?
Ans. 
The laws of thermodynamics describe the fundamental principles governing energy and its transformations.
• The first law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted.

• The second law of thermodynamics states that the entropy of an isolated system always increases over time.

• The third law of thermodynamics states that as temperature approaches absolute zero, the entropy of...read more
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Q2. Difference between ic and si engine
Ans. 
IC engines are internal combustion engines that burn fuel inside the engine, while SI engines are spark ignition engines that use a spark plug to ignite the fuel-air mixture.
• IC engines burn fuel inside the engine, while SI engines use a spark plug to ignite the fuel-air mixture

• IC engines are commonly used in automobiles, motorcycles, and small aircraft

• SI engines are commonly used in cars, trucks, and motorcycles

• IC engi...read more
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