Samosaran Yarns Electrical Engineer Interview Questions and Answers

Star delta control diagram is a method of starting three-phase motors.

• Used to reduce the starting current of the motor

• Switches the motor windings from a star configuration to a delta configuration

• Requires a special starter with a timer and contactors

• Commonly used in industrial applications

VFD stands for Variable Frequency Drive.

• VFD is an electronic device that controls the speed of an AC motor by varying the frequency of the electrical power supplied to the motor.

• It is commonly used in industrial and commercial applications to save energy and improve process control.

• VFDs can be used in HVAC systems, pumps, fans, conveyors, and other motor-driven equipment.

• They offer benefits such as soft starting, speed...read more

VFDs are used to control the speed of AC motors by varying the frequency and voltage supplied to the motor.

• Connect the VFD to the motor and power supply

• Set the desired speed and acceleration/deceleration time

• Adjust the frequency and voltage to control the motor speed

• Use VFDs for energy savings and precise control in industrial applications

• Examples: HVAC systems, conveyor belts, pumps, fans, and compressors