Thejo Engineering Junior Design Engineer Interview Questions and Answers

Q1. What is the process of earthing?
Ans. 
Earthing is the process of connecting electrical equipment or installations to the earth to prevent electric shock and protect against electrical faults.
• Earthing involves creating a connection between the electrical system and the earth.

• It is done by burying a metal conductor, such as a copper rod, in the ground.

• The metal conductor is connected to the electrical system using a wire or cable.

• Earthing provides a path for...read more
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Q2. Which type of DGs used at your Site
Ans. 
The type of DGs used at our site are diesel generators.
• Diesel generators are commonly used as backup power sources in various industries.

• They are reliable and can provide a continuous power supply during electrical outages.

• DGs are often used in remote locations or areas with unreliable grid power.

• They require regular maintenance and fuel supply to operate efficiently.

• Examples of DGs used at our site include Cummins, Ca
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Q3. What is the difference between LT and HT line?
Ans. 
LT line refers to Low Tension line while HT line refers to High Tension line.
• LT line carries low voltage and is used for domestic and small-scale commercial purposes.

• HT line carries high voltage and is used for industrial and large-scale commercial purposes.

• LT line voltage is typically up to 440 volts, while HT line voltage is above 440 volts.

• LT lines are usually overhead lines, while HT lines can be both overhead and ...read more
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Q4. Which type of Circuit Breakers you used at Site?
Ans. 
We used different types of circuit breakers at the site depending on the specific requirements.
• We used air circuit breakers (ACBs) for low voltage applications.

• For medium voltage applications, we used vacuum circuit breakers (VCBs) or oil circuit breakers (OCBs).

• In high voltage installations, we used sulfur hexafluoride (SF6) circuit breakers.

• For specialized applications like generator protection, we used differential ...read more
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Q5. How big transformers you used at site
Ans. 
The size of transformers used at the site varied depending on the specific requirements of the project.
• Transformers used at the site were of different sizes based on the power demand of the electrical system.

• For smaller projects, transformers with a capacity of around 100 kVA were used.

• For medium-sized projects, transformers with a capacity ranging from 250 kVA to 500 kVA were used.

• For larger projects, transformers wit...read more
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Q6. Which type of Batching Plant you used at Site
Ans. 
We used a stationary type batching plant at the site.
• We used a stationary type batching plant for our construction project.

• The stationary batching plant had a higher production capacity compared to mobile plants.

• It was equipped with multiple storage bins for different types of aggregates.

• The plant had a conveyor belt system to transfer the aggregates to the mixer.

• We used this type of batching plant because it provided
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Q7. At which project you are working
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Level of Aptitude test is average. Mainly consists of Quantitative Aptitude, English Proficiency, Logical Reasoning & Technical Questions

Q1. PLC basic knowledge
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Q2. Motors General schematic
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Q1. Why Neilsoft and why should we hire you
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Q1. About Piping Code & Engineering Materials.
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Q2. Different types of Drawing Deliverables
Ans. 
Drawing deliverables refer to the different types of drawings that are produced during the design and construction process.
• Architectural drawings

• Structural drawings

• Mechanical drawings

• Electrical drawings

• Plumbing drawings

• Shop drawings

• As-built drawings
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