Chennai Radha Engineering Works Project Engineer Mechanical Interview Questions and Answers

Blinding is a technique used in research studies to prevent bias by keeping participants or researchers unaware of certain information.

• Blinding can be single-blind (participants are unaware) or double-blind (both participants and researchers are unaware)

• Blinding helps to reduce bias and ensure the validity of study results

• Example: In a drug trial, participants may be given either the actual drug or a placebo without kn

Permits are legal documents that allow individuals or companies to perform certain activities or projects within a specified timeframe and under specific conditions.

• Permits are required for various activities such as construction, demolition, renovation, and environmental impact assessments.

• They ensure that the work being done complies with local regulations and safety standards.

• Permits may be issued by government agen...read more

Maintenance procedures for heat exchangers involve regular cleaning, inspection, and testing to ensure optimal performance.

• Regularly clean the heat exchanger tubes to remove any buildup of debris or scale

• Inspect the heat exchanger for leaks, corrosion, or other signs of damage

• Test the heat exchanger for efficiency and performance using pressure tests or thermal imaging

• Replace any worn out or damaged parts to prevent fu...read more

Gaskets are mechanical seals used to prevent leakage between two surfaces.

• Types: Spiral Wound, Ring Joint, Camprofile, Double Jacketed, Kammprofile, Rubber, Cork, Metal Jacketed, Non-Asbestos

• Materials: Rubber, Cork, Metal, Non-Asbestos, PTFE, Graphite, Silicone, Neoprene

• Used in various industries like automotive, aerospace, oil & gas, plumbing, etc.

Gpm for water supply pump can be calculated by dividing the flow rate in gallons by the time in minutes.

• Calculate the flow rate in gallons per minute (GPM)

• Determine the time in minutes over which the flow rate is measured

• Divide the flow rate by the time to get the GPM value

Heat exchangers are devices used to transfer heat between two or more fluids, ensuring efficient heat transfer and temperature control.

• Transfer heat between fluids

• Maintain temperature control

• Increase energy efficiency

• Commonly used in HVAC systems, refrigeration units, and chemical processing plants

Alignment methods are techniques used to ensure proper positioning and orientation of mechanical components.

• Common alignment methods include laser alignment, dial indicator alignment, and straight edge alignment.

• Laser alignment uses a laser beam to measure and adjust the alignment of components.

• Dial indicator alignment uses a dial gauge to measure the alignment of components.

• Straight edge alignment involves using a str...read more