L&T Technology Services Technical Lead Interview Questions and Answers

Ppk and Cpk are process capability indices used in Six Sigma to measure the ability of a process to produce output within specification limits.

• Ppk and Cpk are statistical measurements that assess how well a process is performing in relation to its specification limits.

• Ppk measures the potential capability of a process to produce output within specification limits, while Cpk measures the actual capability of a process t...read more

Different types of risks include financial, operational, strategic, compliance, and reputational risks.

• Financial risk: related to the potential loss of financial resources, such as market risk, credit risk, and liquidity risk.

• Operational risk: arises from internal processes, systems, or people, leading to errors, fraud, or disruptions.

• Strategic risk: involves the impact of business decisions on the organization's long-...read more

Probability plot curves denote the distribution of data points compared to a theoretical distribution.

• Probability plot curves help visualize how well a dataset fits a particular distribution.

• The curves can indicate if the data is normally distributed or follows a different distribution.

• Examples of probability plots include Q-Q plots and P-P plots.

Analyze and provide feedback on an electrical schematic diagram

• Review the components and connections in the schematic

• Check for any errors or inconsistencies in the design

• Ensure that the schematic follows industry standards and best practices

• Provide suggestions for improvements or optimizations

• Verify that the schematic meets the project requirements

Buck converter control loop mechanism is used to regulate the output voltage by adjusting the duty cycle of the switch.

• The control loop compares the actual output voltage with a reference voltage and adjusts the duty cycle of the switch accordingly.

• It typically consists of a feedback loop with a voltage divider, error amplifier, and PWM controller.

• The PWM controller generates a signal to control the switch on and off t...read more

A flyback converter is a type of switching power supply that uses a transformer to store energy and transfer it to the output.

• Utilizes a transformer to store energy and transfer it to the output

• Operates by storing energy in the transformer during the switch-on time and releasing it to the output during the switch-off time

• Commonly used in low power applications such as battery chargers and LED drivers

Electro-Mechanical standard refers to the set of guidelines and regulations for designing and manufacturing devices that combine electrical and mechanical components.

• Electro-Mechanical standards ensure compatibility and safety of devices.

• Examples include standards for connectors, wiring, and grounding in electronic devices.

• Compliance with standards is important for product quality and reliability.