Bahwan Engineering Mechanical Engineer Interview Questions and Answers

SFD stands for Shear Force Diagram and BMD stands for Bending Moment Diagram in structural analysis.

• SFD shows the variation of shear force along the length of a beam or structure.

• BMD shows the variation of bending moment along the length of a beam or structure.

• Both diagrams are essential for analyzing the internal forces in a structure.

• They are commonly used in civil and mechanical engineering for designing and analyzi...read more

Thrust forces for beams can be calculated using equations of equilibrium and considering external loads.

• Calculate the sum of all external forces acting on the beam.

• Determine the direction of the forces (compression or tension) based on the beam's support conditions.

• Apply equations of equilibrium to calculate the thrust forces at different points along the beam.

• Consider any distributed loads or moments that may affect t...read more

Types of compressors include reciprocating, rotary, centrifugal, and axial compressors.

• Reciprocating compressors use pistons to compress air or gas.

• Rotary compressors use rotating mechanisms such as screws or vanes.

• Centrifugal compressors use a rotating impeller to create centrifugal force.

• Axial compressors use rotating blades to compress air in a straight line.

• Examples include reciprocating air compressors, rotary scr...read more

The procedure to install centrifugal axial compressors involves proper planning, alignment, assembly, and testing.

• Ensure proper foundation is prepared to support the compressor

• Align the compressor with the piping system for proper flow

• Assemble the compressor components according to manufacturer's instructions

• Test the compressor for performance and efficiency before final installation

Types of pumps include centrifugal, positive displacement, and axial flow pumps.

• Centrifugal pumps: use centrifugal force to move fluid through the pump

• Positive displacement pumps: move fluid by trapping a fixed amount and forcing it through the discharge port

• Axial flow pumps: move fluid parallel to the pump shaft

A lifting plan procedure is a detailed plan outlining the steps and precautions to be taken when lifting heavy objects.

• Identify the weight and dimensions of the object to be lifted

• Determine the appropriate lifting equipment needed

• Assess the location and environment for any obstacles or hazards

• Assign roles and responsibilities to team members involved in the lift

• Communicate clearly and follow the plan step by step

• Conduc...read more

Pumps capacity refers to the maximum flow rate a pump can handle.

• Pumps capacity is typically measured in gallons per minute (GPM) or liters per minute (LPM).

• It is important to consider the required flow rate when selecting a pump for a specific application.

• Factors such as pump size, motor power, and system pressure affect the capacity of a pump.

• For example, a centrifugal pump may have a capacity of 500 GPM, while a dia...read more

Methods statement for maintaining rotating and static equipment in mechanical engineering.

• Regular inspection and maintenance schedules for both rotating and static equipment

• Use of proper lubrication for rotating equipment to prevent wear and tear

• Checking alignment and balance of rotating equipment to ensure smooth operation

• Testing and calibrating static equipment for accuracy and efficiency

• Following manufacturer's guid...read more

The hydrotest pressure is 1.5 times the design pressure.

• Hydrotest pressure is the pressure applied to a vessel or pipeline to check for leaks or defects.

• It is usually done before commissioning the system.

• For example, if the design pressure is 100 psi, the hydrotest pressure would be 150 psi.

The procedure for fit up inspection includes classification, cleaning, alignment, root gap, root face, bevel angle, and mismatch or overlap.

• Classify the base metal

• Clean the surface

• Align the parts to be joined

• Check the root gap and root face

• Measure the bevel angle

• Check for any mismatch or overlap

• Ensure all specifications are met