Optum Global Solutions Interview Questions and Answers

Motors convert electrical energy into mechanical energy, while generators convert mechanical energy into electrical energy.

• Motors use electricity to produce motion, while generators use motion to produce electricity

• Motors have a rotor that spins within a stator, while generators have a rotor that is turned by an external force

• Motors are commonly used in appliances, vehicles, and industrial machinery, while generators are used in power plants and backup power systems

Induction motor works on the principle of electromagnetic induction to generate rotating magnetic field.

• Induction motor has a stator with a set of windings that are connected to an AC power supply.

• When AC current flows through the stator windings, it creates a rotating magnetic field.

• This rotating magnetic field induces currents in the rotor windings, causing the rotor to rotate.

• The rotor never reaches the synchronous speed of the rotating magnetic field, resulting in continu...read more

An auto transformer is a type of transformer where part of the winding is common to both the primary and secondary circuits.

• Auto transformers have only one winding with multiple taps for input and output connections.

• They are more efficient and cost-effective compared to traditional transformers.

• Auto transformers are commonly used in voltage regulation applications.

• Example: A 220V to 110V step-down auto transformer.

The type of AC motor commonly used in production engineering is the induction motor.

• The most common type of AC motor used in production engineering is the induction motor.

• Induction motors are reliable, cost-effective, and require minimal maintenance.

• Other types of AC motors used in production engineering include synchronous motors and DC motors for specific applications.

• Examples of induction motor applications in production engineering include conveyor systems, pumps, fans, a...read more

A motor is a device that converts electrical energy into mechanical energy. There are various types of motors including AC motors, DC motors, and servo motors.

• A motor is a machine that converts electrical energy into mechanical energy

• Types of motors include AC motors, DC motors, and servo motors

• AC motors run on alternating current and are commonly used in household appliances

• DC motors run on direct current and are often used in portable devices like power tools

• Servo motors ar...read more