Hindustan Zinc Graduate Trainee Interview Questions and Answers for Experienced

Q1. What is casting
Ans. 
Casting is the process of creating objects by pouring a liquid material into a mold and allowing it to harden.
• Casting involves pouring a material such as metal, plastic, or concrete into a mold

• The material then hardens and takes the shape of the mold

• Common examples of casting include metal casting for manufacturing parts and concrete casting for construction projects
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Q2. What is the difference between drilling and boring
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Drilling is the process of creating a hole using a rotating cutting tool, while boring is the process of enlarging an existing hole.
• Drilling is typically used to create holes in materials, while boring is used to enlarge existing holes.

• Drilling is usually done with a drill bit, while boring is done with a boring tool.

• Drilling is often used in construction and manufacturing, while boring is commonly used in machining pr...read more
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Q1. DM water parameter . Cold startup Coal analysis.
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It was basic test contains English, aptitude and reasoning.
Exam type- MCQ type questions
Difficulty level- Moderate
Time- need to do fast

Q1. It was technical round in which interviewer asked to select me two favourite subject from your branch then he asked basic questions from these two subject.
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Q2. Difference between flywheel and governor?
Ans. 
Flywheel stores energy while governor regulates speed.
• Flywheel is a mechanical device used to store rotational energy.

• Governor is a device used to regulate the speed of an engine or machine.

• Flywheel is used to maintain the speed of an engine during the power stroke.

• Governor is used to control the speed of an engine by adjusting the fuel supply or ignition timing.

• Flywheel is commonly used in machines like steam engines,...read more
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Q3. What is Buckingham pi theorem?
Ans. 
Buckingham pi theorem is a method to determine the number of dimensionless parameters in a physical problem.
• It is used in dimensional analysis.

• It helps to reduce the number of variables in a problem.

• It states that if a physical problem involves n variables and k fundamental dimensions, then the problem can be expressed in terms of n-k dimensionless parameters.

• For example, in fluid mechanics, the Reynolds number is a di...read more
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Q4. How to find deflection of conical bodies acting with axial load?
Ans. 
To find deflection of conical bodies acting with axial load, use the formula for deflection of a cone under axial load.
• Use the formula for deflection of a cone under axial load: delta = (P*L)/(E*A)

• P is the axial load, L is the length of the cone, E is the modulus of elasticity, and A is the cross-sectional area of the cone

• The deflection will be greater at the smaller end of the cone

• Consider the material properties of t...read more
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Q1. Tell me about yourself?
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Q2. Apart from studies, what you have done in btech?
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Q3. Tell me about your final year project and internship?
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Q1. Introduction & JD related queries & questions
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Test was easy. Basic maths problems like profit/loss percent...

Q1. Tell me about yourself
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Q2. What is your final year projects
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Q3. What is your favorite subject
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Q1. Past company details
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Q1. Furnace maintenance
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Q2. Hydraulic and pneumatic system
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Q1. PLC, HMI, sensor
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Q1. Motor, protection, relay
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