10+ Reliability Engineer Interview Questions and Answers

Reliability can be estimated using expert opinions, simulations, or historical data from similar products.

• Expert opinions from engineers or industry professionals can be used to estimate reliability.

• Simulations can be run to predict reliability based on design and operating conditions.

• Historical data from similar products can be used to estimate reliability.

• Reliability can also be estimated using accelerated life testing or stress testing.

• Reliability growth models can be used...read more

Scale parameter in Weibull Distribution determines the shape of the distribution.

• Scale parameter is denoted by the Greek letter beta (β).

• It determines the point at which the failure rate of a product reaches its maximum value.

• A larger scale parameter indicates a longer life expectancy for the product.

• A smaller scale parameter indicates a shorter life expectancy for the product.

• The Weibull Distribution is commonly used in reliability engineering to model the failure rates of p...read more

Use appropriate tools to download logs from different consoles like ILO, IDRAC.

• Identify the type of console and the logs required

• Use the appropriate tool to access the console remotely

• Download the logs to a local machine or a centralized location

• Ensure the logs are saved in a secure and organized manner

I manage number of calls/complaints by implementing proactive maintenance strategies, analyzing root causes, and improving communication channels.

• Implement proactive maintenance strategies to prevent issues before they occur

• Analyze root causes of calls/complaints to address underlying issues

• Improve communication channels with customers to address concerns effectively

Tools used for reliability include FMEA, RCM, RCA, Weibull analysis, and statistical process control.

• Failure Mode and Effects Analysis (FMEA) to identify potential failures and their effects

• Reliability Centered Maintenance (RCM) to determine maintenance requirements

• Root Cause Analysis (RCA) to identify the underlying causes of failures

• Weibull analysis to model failure rates over time

• Statistical Process Control (SPC) to monitor and control process variability

• Other tools includ...read more

An APFC panel works by automatically adjusting the power factor of electrical systems to improve efficiency and reduce energy costs.

• APFC panel measures the power factor of the electrical system

• It then automatically switches capacitors in or out of the circuit to adjust the power factor to a desired level

• This helps in reducing reactive power, improving efficiency, and lowering electricity bills

RAC stands for Reliability, Availability, and Capability. It is a method used to assess the performance of a system.

• RAC is used to evaluate the reliability, availability, and capability of a system or process.

• Reliability refers to the probability that a system will perform its intended function without failure over a specified period of time.

• Availability measures the percentage of time that a system is operational and can be used when needed.

• Capability assesses the ability of...read more

VFD stands for Variable Frequency Drive, used to control the speed of an AC motor by varying the frequency and voltage supplied to the motor.

• Controls the speed of AC motors by adjusting frequency and voltage

• Improves energy efficiency by matching motor speed to the required load

• Reduces wear and tear on motors by soft starting and stopping

• Commonly used in HVAC systems, pumps, and fans

Power factor is a measure of how effectively electrical power is being used in a system.

• Power factor is the ratio of real power (kW) to apparent power (kVA) in an electrical system.

• It indicates how efficiently power is being converted into useful work.

• A power factor of 1 indicates all power is being used effectively, while a lower power factor means some power is being wasted.

• Power factor correction is often used to improve efficiency and reduce energy costs.

To print last column in unix

• Use the command 'cut' with the delimiter option '-d' and specify the delimiter

• Specify the field option '-f' and set it to the last field using '$'

• Example: 'cut -d ',' -f $' filename.csv' will print the last column of a CSV file

MTBF stands for Mean Time Between Failures and MTTR stands for Mean Time To Repair.

• MTBF is the average time between failures of a system.

• MTTR is the average time taken to repair a failed system.

• MTBF + MTTR = Mean Time To Failure (MTTF)

• MTBF and MTTR are key metrics in reliability engineering to assess system performance.

Modules in Ansible are reusable, standalone scripts that can be used to perform specific tasks.

• Modules can be written in any programming language

• Modules can be executed on remote hosts

• Modules can be used to install packages, manage files, and perform other tasks

• Modules can be found in the Ansible library or created by users

• Examples of modules include apt, yum, and copy