Dhunseri Tea & Industries Interview Questions and Answers

Yes, I have experience working on SCADA systems.

• I have experience configuring and troubleshooting SCADA systems

• I have worked with PLCs and RTUs in SCADA systems

• I am familiar with protocols like Modbus and DNP3 used in SCADA communication

Star Delta connection is done to reduce starting current in induction motors.

• Reduces starting current in induction motors

• Helps in reducing voltage drop during starting

• Provides a smooth start to the motor

• Used for high-power motors where starting current needs to be limited

Servo motors are used for precise control of position, velocity, and acceleration in various applications.

• Servo motors provide accurate and repeatable movement control.

• They are commonly used in robotics, CNC machines, and industrial automation.

• Servo motors can be easily controlled using feedback mechanisms such as encoders or potentiometers.

• They offer high torque-to-inertia ratios, making them suitable for applications

VDF is used to control the speed of electric motors in various applications.

• Variable Frequency Drives (VFDs) are used to vary the speed of electric motors by adjusting the frequency of the electrical supply.

• They are commonly used in HVAC systems, industrial pumps, conveyor belts, and other applications where precise speed control is required.

• VFDs help in reducing energy consumption by matching the motor speed to the ac...read more

Earthing value should be less than 1 ohm for effective grounding.

• The correct value of earthing should be less than 1 ohm for effective grounding.

• Proper earthing helps in preventing electrical shocks and fires.

• Regular testing and maintenance of earthing systems is important to ensure safety.

• Examples of earthing systems include rod earthing, plate earthing, and pipe earthing.