TK Elevator Senior Mechanical Maintenance Engineer Interview Questions and Answers

Thermodynamics is the branch of physics that deals with the relationships between heat and other forms of energy.

• Thermodynamics studies the transfer of energy in the form of heat and work.

• It involves concepts like entropy, temperature, and energy conversion.

• Examples include the efficiency of engines, refrigeration systems, and phase transitions in materials.

The third law of motion states that for every action, there is an equal and opposite reaction.

• States that when one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object

• The forces always occur in pairs

• Examples include a rocket pushing against the ground to lift off, or a person pushing against a wall

Types of bearings include ball bearings, roller bearings, plain bearings, and fluid bearings.

• Ball bearings: use balls to reduce friction between two surfaces

• Roller bearings: use cylindrical rollers to reduce friction

• Plain bearings: have a simple surface with no moving parts

• Fluid bearings: use a thin layer of liquid or gas to reduce friction

Piping refers to the system of pipes used to transport fluids or gases from one location to another.

• Piping is used in a variety of industries, including oil and gas, chemical, and power generation.

• It can be made from a variety of materials, including steel, copper, and plastic.

• Piping systems can be complex and require careful design and installation to ensure proper flow and pressure.

• Maintenance and inspection of pipin...read more

Piping stress is the stress induced in a piping system due to various loads and forces.

• Piping stress can be caused by thermal expansion, pressure, weight, vibration, and seismic activity.

• It can lead to deformation, leakage, and failure of the piping system.

• Piping stress analysis is done to ensure the safe and reliable operation of the piping system.

• Factors such as material properties, pipe routing, and support design a...read more

Piping materials are the materials used for constructing pipes that transport fluids or gases.

• Piping materials can be metallic or non-metallic.

• Common metallic piping materials include carbon steel, stainless steel, copper, and aluminum.

• Non-metallic piping materials include PVC, CPVC, fiberglass, and HDPE.

• The choice of piping material depends on factors such as the type of fluid or gas being transported, temperature, pr