Jindal Power Site Incharge Interview Questions and Answers

Power plant cycle is a series of processes that convert fuel into electricity.

• Fuel is burned to produce heat

• Heat is used to boil water and create steam

• Steam turns a turbine which generates electricity

• Excess heat is released into the environment

• Water is cooled and recycled in the system

Casting methods are processes used to create metal objects by pouring molten metal into a mold.

• Sand casting: uses sand molds to create the shape of the object

• Investment casting: uses wax patterns that are melted away to create the mold

• Die casting: uses metal molds to create complex shapes with high accuracy

• Permanent mold casting: uses reusable molds made of metal

• Centrifugal casting: rotates the mold to distribute the m

Batch production is a manufacturing process where products are made in groups or batches, rather than individually.

• Products are produced in specified quantities at a time

• Each batch goes through the whole production process together

• Common in industries like food processing, pharmaceuticals, and automotive manufacturing

Supercritical stage of steam refers to a state where it exhibits properties of both liquid and gas.

• Occurs at temperatures and pressures above the critical point

• Density and viscosity are similar to liquids, while diffusivity and compressibility are similar to gases

• No distinct boundary between liquid and gas phases

• Used in power plants for more efficient energy generation

Boiler tubes are color coded for easy identification and maintenance purposes.

• Boiler tubes are typically color coded based on their function or material composition.

• Common color codes include blue for feedwater tubes, red for steam tubes, and green for superheater tubes.

• Color coding helps maintenance personnel quickly identify and troubleshoot issues with specific tubes.

• Color coding also aids in proper installation and...read more

NTPC expects employees to demonstrate strong leadership, technical skills, commitment to safety, and dedication to achieving company goals.

• Demonstrate strong leadership skills in managing teams and projects

• Possess technical expertise relevant to the role

• Prioritize safety in all operations and decision-making

• Show dedication to achieving NTPC's goals and objectives

Normality test in Six Sigma is used to check if data follows a normal distribution, which is important for statistical analysis.

• Normality tests help ensure that the data meets the assumptions of the statistical tests being used in Six Sigma.

• Common normality tests include Shapiro-Wilk test, Kolmogorov-Smirnov test, and Anderson-Darling test.

• If data is not normally distributed, transformations or non-parametric tests may

Hypothesis testing is a statistical method used to make inferences about a population based on sample data.

• Hypothesis testing involves formulating a null hypothesis and an alternative hypothesis.

• The null hypothesis is assumed to be true until there is enough evidence to reject it.

• A significance level is chosen to determine the threshold for rejecting the null hypothesis.

• Common hypothesis tests include t-tests, chi-squa...read more