Tata Hitachi Construction Machinery Diploma Trainee Interview Questions and Answers

Company taken an aptitude test after that interview

Q1. HR ask me a question, how work is the cylinder function, Ans- cylinder is working a two stock and four stock
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Q1. How many stage of fuel injectors
Ans. 
There are typically two stages of fuel injectors: low impedance and high impedance.
• Low impedance injectors have a resistance of around 2-4 ohms and are commonly used in high-performance engines.

• High impedance injectors have a resistance of around 12-16 ohms and are commonly used in standard engines.

• The number of stages refers to the different resistance levels of the injectors.
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Q1. Basic of your work
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Q2. Tell me about yourself
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Q3. Whats your experience in your current company
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Q4. Why you want to change
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Q5. How you tackles things when it got messup
Ans. 
I address the situation by analyzing the root cause, creating a plan of action, and communicating effectively with team members.
• Analyze the root cause of the mess-up

• Create a plan of action to rectify the situation

• Communicate effectively with team members to ensure everyone is on the same page
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Q6. Favourite hobbies
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Q1. Line problems during assembly
Ans. 
Line problems during assembly can be caused by various factors and can lead to delays in production.
• Identify the root cause of the line problem, such as equipment malfunction or human error.

• Implement a systematic approach to troubleshooting and resolving the issue.

• Train staff on proper assembly procedures to prevent future line problems.

• Regularly maintain and inspect equipment to prevent breakdowns during assembly.

• Util...read more
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Q2. Process define like main line subassembly
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Q3. Softwares usages for data analysis
Ans. 
Softwares like Excel, Tableau, Python, and R are commonly used for data analysis.
• Excel is used for basic data analysis and visualization

• Tableau is used for creating interactive data visualizations

• Python and R are popular for statistical analysis and machine learning
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Q4. How you store and manage data and document
Ans. 
I store and manage data and documents using a combination of physical filing systems and digital storage solutions.
• Utilize physical filing systems for hard copies of documents

• Organize digital files into folders on a secure server

• Regularly backup important data to prevent loss

• Implement access controls to protect sensitive information
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Q5. Audits standards and accountability
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Q6. How you achieved your targets and what is the bottleneck points
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Q7. Engine function and radiator function
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Q8. Machine product information like dimension and capacity and functions like applications and usages
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Q1. Personal information
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Q2. My self introduction
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Q3. Engine tecnical
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Q1. Disel engine combustion process
Ans. 
The diesel engine combustion process involves the ignition of fuel injected into the combustion chamber by compressed air.
• Diesel fuel is injected into the combustion chamber at high pressure

• The air in the combustion chamber is compressed by the piston, leading to high temperatures

• The high temperature air ignites the fuel, leading to combustion and the generation of power

• The combustion process in diesel engines is more
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Q2. What is two & four stroke engine.
Ans. 
A two-stroke engine completes a power cycle in two strokes of the piston, while a four-stroke engine completes it in four strokes.
• Two-stroke engines have a simpler design with fewer moving parts compared to four-stroke engines.

• Two-stroke engines typically produce more power for their size but are less fuel-efficient and emit more pollution.

• Four-stroke engines are more common in cars, motorcycles, and larger machinery d...read more
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Q3. What's is hydraulic component.
Ans. 
A hydraulic component is a device that utilizes fluid power to perform mechanical tasks.
• Hydraulic components use liquid to transmit power.

• Common examples include hydraulic cylinders, pumps, motors, valves, and hoses.

• They are often used in heavy machinery, construction equipment, and industrial applications.
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Q4. What is realy,and working principle
Ans. 
Realy is a type of relay used in electrical systems to control high power devices with low power signals.
• Relays are switches that open and close circuits electromechanically

• Realy is a type of relay specifically designed for high power applications

• Working principle involves an electromagnet that moves an armature to open or close the circuit

• Commonly used in industrial automation, automotive, and HVAC systems
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Q5. Least count of all megerment.
Ans. 
Least count is the smallest change in the measured quantity that can be detected by the measuring instrument.
• Least count is determined by the smallest division on the scale of the measuring instrument.

• It is important for accurate measurements and precision in engineering.

• For example, a ruler with millimeter divisions has a least count of 1 mm.

• A vernier caliper with 0.1 mm divisions has a least count of 0.1 mm.
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