Nippon Koei India Engineering Assistant Interview Questions and Answers

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 ?
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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. What is pwht ?
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PWHT stands for Post Weld Heat Treatment, a process used to reduce residual stresses and improve the mechanical properties of welded joints.
• PWHT involves heating the welded component to a specific temperature for a certain period of time, followed by controlled cooling.

• The process helps to eliminate hydrogen cracking, improve toughness, and reduce distortion in the welded joint.

• Common methods of PWHT include furnace he...read more
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Q2. What is wqt range ?
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WQT range refers to the range of values for Water Quality Testing in a specific context.
• WQT range can vary depending on the parameters being tested, such as pH, turbidity, dissolved oxygen, etc.

• For example, the WQT range for pH in drinking water may be 6.5-8.5.

• Monitoring and maintaining WQT range is crucial for ensuring safe and clean water supply.

• Regular testing and analysis of water samples help in determining if the
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Q3. Acceptance criteria of LPT
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LPT acceptance criteria ensure that the test results meet specified requirements.
• Test results must meet specified requirements outlined in the acceptance criteria

• Acceptance criteria should be clearly defined and documented

• Criteria may include specific performance metrics or thresholds

• Examples: minimum tensile strength, maximum elongation percentage
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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.
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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
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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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Q1. What is ATS, transformer maintenance procedure, protection of transformer, maintenance procedure of motor, protection of motor, knowledge about SAP
Ans. 
ATS stands for Automatic Transfer Switch. It is used to transfer power supply between two sources. Transformer and motor maintenance procedures and protection methods are essential for their efficient operation. SAP is a software used for enterprise resource planning.
• ATS is used to automatically switch power supply between two sources, ensuring uninterrupted power supply.

• Transformer maintenance involves regular inspect...read more
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Q2. Knowledge about DG set, and spare material
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Q3. Rating of HT motor and FLC of HT motor
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HT motor rating is the maximum power it can handle and FLC is the current it draws at full load.
• HT motor rating is expressed in kilowatts (kW) or megawatts (MW).

• FLC of HT motor is the full load current it draws at rated voltage and frequency.

• FLC is expressed in amperes (A) and varies depending on the motor's power rating and efficiency.

• For example, a 1 MW HT motor may have a FLC of 1000 A at 11 kV.

• The rating and FLC of...read more
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Q4. Plant EHT system and single line diagram of plants.
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Plant EHT system and single line diagram of plants.
• EHT system refers to Extra High Tension system used in power plants

• Single line diagram shows the electrical connections between different components

• It is important to have a clear and accurate diagram for safety and maintenance purposes
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Q5. Knowledge about HT and LT breaker.
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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
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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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