Nippon Koei India Engineering Assistant Interview Questions and Answers

Q1. What is diesel generator, transformer & HVAC
Ans. 
Diesel generator is a backup power source using diesel fuel, transformer is a device that transfers electrical energy between circuits, and HVAC is a system for heating, ventilation, and air conditioning.
• Diesel generator: provides backup power using diesel fuel, commonly used in areas with frequent power outages

• Transformer: transfers electrical energy between circuits, stepping up or down voltage levels as needed

• HVAC: ...read more
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Q2. Operation & maintenance LT pannel & HT pannel
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Q3. What is fire fighting system
Ans. 
A fire fighting system is a set of equipment and procedures designed to detect, control, and extinguish fires in a building or area.
• Includes fire alarms, sprinkler systems, fire extinguishers, and fire hoses

• May also involve fire suppression systems like foam or gas

• Designed to protect lives and property in the event of a fire

• Regular maintenance and testing are crucial to ensure effectiveness
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Q4. What is DM plant
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DM plant stands for Demineralization plant, used to remove minerals and salts from water.
• DM plant is used in industries to produce demineralized water for various processes.

• It consists of ion exchange resins to remove minerals like calcium, magnesium, and salts from water.

• The process involves passing water through cation and anion exchange columns to remove ions.

• DM plant is essential in power plants, pharmaceutical ind...read more
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Q5. What is acb,vcb,mccb, mcb
Ans. 
ACB, VCB, MCCB, MCB are types of circuit breakers used in electrical systems.
• ACB stands for Air Circuit Breaker, used for high voltage applications.

• VCB stands for Vacuum Circuit Breaker, used for medium voltage applications.

• MCCB stands for Molded Case Circuit Breaker, used for low voltage applications.

• MCB stands for Miniature Circuit Breaker, used for residential and commercial applications.
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Q6. Fire fighting system
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Q7. ACB,VCB,MCCB,MCB,OCB etc
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Q1. Motor type, Pump lowering, ESR piping etc.
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Q2. Solar Specification
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Q1. Notice period is negotiable
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Q2. 30%hike on current ctc
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Q1. What do you know about PCB ?
Ans. 
PCB stands for Printed Circuit Board, a board made of non-conductive material with conductive tracks for electronic components.
• PCB is used to mechanically support and electrically connect electronic components using conductive pathways.

• It is made of non-conductive material like fiberglass, with copper tracks to connect components.

• PCBs can be single-sided, double-sided, or multi-layered depending on the complexity of th...read more
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Q2. What is the active and passive components?
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Active components require a power source to operate, while passive components do not.
• Active components require an external power source to function, such as transistors and integrated circuits.

• Passive components do not require an external power source, such as resistors and capacitors.

• Active components can control the flow of electricity, while passive components simply store or dissipate energy.

• Examples of active comp...read more
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Q3. What is the difference between resistance and capacitor?
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Resistance is the opposition to the flow of current in a circuit, while a capacitor stores and releases electrical energy.
• Resistance limits the flow of current, while a capacitor stores and releases charge.

• Resistance is measured in ohms, while capacitance is measured in farads.

• Examples of resistors include carbon film resistors, while examples of capacitors include ceramic capacitors.

• Resistance dissipates energy in the...read more
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Q4. What do you know about SMT ?
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SMT stands for Surface Mount Technology, a method of electronic component assembly where components are mounted directly onto the surface of a printed circuit board (PCB).
• SMT components are smaller and lighter than through-hole components, allowing for higher component density on PCBs.

• SMT components are typically mounted using solder paste and reflow soldering techniques.

• SMT technology allows for automated assembly pro...read more
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Q1. Interview with the CV by asking the field role and responsibilties.
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Q2. Validation for the client interview.
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Meetings with the project managers and department head with the clients.

Q1. Department head client validation test the manager.
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Q1. Written test from the technical choice.
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Q1. Evey site validation in specification knowledge and procedures for field work.
Ans. 
Site validation in specification knowledge and procedures for field work is essential for QA QC Engineers.
• Understanding the specifications and requirements for each site is crucial

• Following established procedures and protocols for field work

• Ensuring that all work is in compliance with industry standards and regulations

• Regularly updating knowledge on new technologies and best practices

• Documenting all validation processe
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Q1. Transformer tests
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Q1. What is moter and it capacity
Ans. 
A motor is a device that converts electrical energy into mechanical energy to perform work.
• Motors are commonly used in various applications such as electric vehicles, industrial machinery, and household appliances.

• They come in different types such as AC motors, DC motors, and stepper motors.

• Motor capacity refers to its power rating, typically measured in horsepower (HP) or kilowatts (kW).

• Higher capacity motors can gene...read more
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Q2. Moter is a mechanical part which convert electrical energy in to mechanical energy
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Part-1 consist of General aptitude & Part-2 consist of Technical question related to Civil Engineering

Q1. Purely technical no other questions other than technical question relevant to the post we are applying
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Q1. Salary Expectations & other stuffs
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Q1. General Thinks related to field experience, location, and salary details
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Q1. Procedure for P91, Chemistry of steels and hydrogen cracking and Stainless steel
Ans. 
The procedure for P91, chemistry of steels, and hydrogen cracking in stainless steel involves understanding the properties of these materials and implementing appropriate testing and inspection methods.
• P91 is a high-strength steel alloy used in high-temperature applications

• Chemistry of steels involves understanding the composition and properties of different types of steel

• Hydrogen cracking can occur in steels when expo...read more
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