Teleperformance Interview Questions and Answers

An airplane adjusts its height by changing the angle of its wings and using control surfaces.

• An airplane adjusts its height by changing the angle of its wings, which is controlled by the pilot using the control column or yoke.

• To climb, the pilot increases the angle of attack of the wings, which increases lift and allows the airplane to gain altitude.

• To descend, the pilot decreases the angle of attack, reducing lift and causing the airplane to descend.

• Control surfaces such as ...read more

Petroleum refining is the process of converting crude oil into useful products like gasoline, diesel, and jet fuel.

• Crude oil is first heated and then sent to a distillation tower where it is separated into different components based on their boiling points.

• The separated components are then further processed through various refining processes such as cracking, reforming, and hydrotreating.

• Cracking breaks down heavy hydrocarbon molecules into lighter ones, while reforming conve...read more

CPM and PERT are project management techniques used to plan and control complex projects.

• CPM stands for Critical Path Method and PERT stands for Program Evaluation and Review Technique.

• CPM is a deterministic method that focuses on the time required to complete a project, while PERT is a probabilistic method that considers uncertainties in project duration.

• CPM uses a single estimate for each activity duration, while PERT uses three estimates (optimistic, pessimistic, and most ...read more

NPSH stands for Net Positive Suction Head. It is a measure of the pressure available at the suction side of a pump.

• NPSH is important in determining if a pump can operate without cavitation.

• It is calculated by subtracting the vapor pressure of the fluid from the total suction head.

• If the NPSH available is less than the NPSH required, cavitation may occur.

• Cavitation can damage the pump and reduce its efficiency.

• NPSH is influenced by factors such as fluid properties, pump design...read more

Aerodynamic profile application in fluid machinery

• Aerodynamic profiles are used in fluid machinery to optimize performance and efficiency

• They are designed to minimize drag and maximize lift

• Examples include airfoils in aircraft wings, propeller blades, and turbine blades

• Aerodynamic profiles are also used in pumps, fans, and compressors to improve fluid flow

• They are crucial in the design of vehicles, wind turbines, and other fluid-powered systems