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I applied via Naukri.com and was interviewed before Sep 2022. There were 2 interview rounds.
AC to DC conversion involves using a rectifier to change the direction of current flow.
Use a rectifier to convert AC to DC by changing the direction of current flow.
Types of rectifiers include half-wave, full-wave, and bridge rectifiers.
Examples of rectifiers include diode rectifiers and semiconductor rectifiers.
Analog signals are continuous and can have infinite values, while digital signals are discrete and have a finite number of values.
Analog signals have a smooth waveform, while digital signals have a stepped waveform.
Analog signals are affected by noise and interference more than digital signals.
Analog signals can have an infinite number of possible values, while digital signals have a limited number of discrete values (
Resistance and capacitor faults can be checked using a multimeter.
Use a multimeter to measure the resistance of a resistor. A good resistor will have a resistance value within its tolerance range.
For capacitors, check for any physical damage such as bulging or leaking. Use a multimeter in capacitance mode to measure the capacitance value.
In case of capacitors, also check for any signs of overheating or burning marks on...
High voltage can be converted to low voltage in DC supply using a voltage regulator or a voltage divider circuit.
Use a voltage regulator such as a buck converter to step down the voltage
Implement a voltage divider circuit using resistors to reduce the voltage
Choose the appropriate components based on the input and output voltage requirements
Ensure proper heat dissipation to prevent overheating of components
A step-down transformer is used to convert high voltage to low voltage in DC supply.
Step-down transformer is commonly used for this purpose
It reduces the voltage while maintaining the same frequency
Examples include power adapters for electronic devices
Flux in soldering helps to remove oxidation from the metal surfaces being joined, allowing the solder to flow more easily and create a strong bond.
Flux cleans the metal surfaces by removing oxides, dirt, and other contaminants.
It promotes wetting, which helps the solder to flow and bond properly.
Flux also prevents oxidation of the metal surfaces during the soldering process.
There are different types of flux such as ros...
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I appeared for an interview before Feb 2024.
The seven quality control tools are essential for process improvement and problem-solving in engineering.
Check sheet: Used to collect and analyze data in a systematic way, such as tracking defects in a manufacturing process.
Pareto chart: Helps identify the most significant factors contributing to a problem by displaying them in descending order of frequency or impact.
Cause-and-effect diagram (Fishbone diagram): Visuali...
Autonomous maintenance is a key pillar of Total Productive Maintenance (TPM) and involves seven steps to empower operators to take care of their equipment.
Step 1: Initial Cleaning - Operators clean the equipment and surrounding area to identify abnormalities.
Step 2: Eliminate Sources of Contamination - Remove dirt, dust, and debris that can lead to breakdowns.
Step 3: General Inspection - Operators visually inspect the ...
OEE calculations involve Availability, Performance, and Quality factors to measure equipment efficiency.
Calculate Availability by dividing Operating Time by Planned Production Time.
Calculate Performance by dividing Actual Production by Maximum Possible Production.
Calculate Quality by dividing Good Units Produced by Total Units Started.
Implementing lean practices is mandatory for organizations to improve efficiency, reduce waste, and increase productivity.
Lean practices help organizations identify and eliminate waste in processes, leading to cost savings and improved efficiency.
By implementing lean practices, organizations can improve quality control and reduce defects in products or services.
Lean practices promote continuous improvement and empower ...
Downstream team members can be motivated through recognition, clear communication, opportunities for growth, and fostering a positive work environment.
Provide recognition for their hard work and achievements
Communicate clearly about goals, expectations, and feedback
Offer opportunities for growth and development, such as training or mentorship programs
Create a positive work environment through team-building activities a
Pareto analysis is a technique used to identify the most important factors contributing to a problem or situation.
Pareto analysis is based on the Pareto Principle, also known as the 80/20 rule, which states that roughly 80% of effects come from 20% of causes.
It involves identifying and prioritizing the factors that have the most significant impact on a particular outcome.
By focusing on addressing the most critical fact...
A Gemba walk is a Lean management technique where managers go to the actual workplace to observe operations and engage with employees.
Gemba walks involve observing processes, asking questions, and identifying opportunities for improvement.
Managers should focus on understanding the work being done and the challenges faced by employees.
Gemba walks help in building relationships with employees and fostering a culture of c...
Steps involved in performing safety risk assessments
Identify hazards and potential risks
Assess the likelihood and severity of each risk
Implement control measures to mitigate risks
Monitor and review the effectiveness of control measures
Document findings and recommendations
Communicate risks to relevant stakeholders
TPM stands for Total Productive Maintenance, a proactive approach to maintenance that aims to maximize equipment effectiveness.
TPM focuses on preventing equipment breakdowns through regular maintenance and employee involvement.
It involves autonomous maintenance, planned maintenance, and focused improvement activities.
TPM aims to improve overall equipment effectiveness (OEE) by reducing downtime, improving quality, and ...
posted on 19 Jun 2024
Asked scenario based questions
I applied via Referral and was interviewed in Jan 2021. There was 1 interview round.
I passed HSLC in 2015.
I passed HSLC in 2015.
I completed my HSLC in 2015.
I cleared the HSLC examination in 2015.
I applied via Approached by Company and was interviewed in Apr 2023. There were 4 interview rounds.
Wire drawing process parameters involve factors like die angle, reduction ratio, lubrication, and speed.
Die angle affects the shape and size of the wire being drawn.
Reduction ratio determines the amount of diameter reduction in each pass.
Lubrication is crucial for reducing friction and heat during the process.
Speed influences the overall efficiency and quality of the drawn wire.
By implementing cost control measures, monitoring expenses, negotiating with suppliers, and optimizing production processes.
Implementing cost control measures such as setting budgets and tracking expenses
Monitoring expenses regularly to identify areas of overspending
Negotiating with suppliers to get the best prices for materials and services
Optimizing production processes to reduce waste and improve efficiency
Water cement ratio is the ratio of the weight of water to the weight of cement used in a concrete mix.
Water cement ratio is a crucial factor in determining the strength and durability of concrete.
A lower water cement ratio results in stronger and more durable concrete.
Typical water cement ratios range from 0.4 to 0.6 for normal strength concrete.
For high strength concrete, water cement ratios can be as low as 0.25.
posted on 17 Mar 2025
I appeared for an interview before Mar 2024, where I was asked the following questions.
Symbols in drawing represent specific elements, materials, or instructions, aiding in clear communication of design intent.
Symbols simplify complex information, e.g., electrical symbols like resistors and capacitors.
They ensure consistency across drawings, such as using the same symbol for a door in architectural plans.
Symbols can indicate material types, like hatching patterns for different materials in engineering dr...
A skill matrix is a tool used to assess and visualize the skills of team members against project requirements.
Helps identify skill gaps within a team.
Facilitates targeted training and development plans.
Enables better resource allocation for projects.
Example: A software team may list skills like Java, Python, and SQL, rating each member's proficiency.
A go gauge is a precision tool used to check the dimensional accuracy of parts, ensuring they meet specified tolerances.
Used in manufacturing to verify that a part fits within specified limits.
Typically consists of a 'go' side that should fit and a 'no-go' side that should not fit.
Example: A go gauge for a hole might be a pin that fits perfectly, while a no-go gauge would be a larger pin that does not fit.
Helps in main...
I applied via Company Website and was interviewed in Sep 2021. There was 1 interview round.
Blaming staff without evidence is unprofessional and can damage morale and trust within the team.
Avoid jumping to conclusions without concrete evidence
Encourage open communication and transparency
Focus on problem-solving rather than assigning blame
Provide constructive feedback and support to help staff improve
Lead by example and take responsibility for mistakes
Directors may not always be aware of thefts due to lack of oversight, trust in employees, or focus on other priorities.
Directors may not be directly involved in day-to-day operations where thefts occur
There may be a lack of proper oversight or monitoring mechanisms in place
Directors may trust their employees and not suspect them of theft
Directors may be focused on other strategic priorities and not pay attention to pot
Some of the top questions asked at the Wrig Nanosystems Senior Production Engineer interview -
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