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Load test on Separately excited Dc motor using Virtual Lab

Load test on Separately excited DC motor using Virtual Lab


In the realm of education and technology, the integration of virtual labs has transformed the way students engage with complex concepts. One such initiative, the Electrical Emissions Lab Simulator, developed by the Ministry of Human Resource Development (MHRD) under the National Mission on Education through Information and Communication Technology (ICT), has opened new avenues for students to learn about electrical engineering concepts. In this article, we'll explore the simulator's features and step-by-step guide to conducting the "Load Test on a Separately Excited DC Motor" experiment.

Accessing the Electrical Emissions Lab Simulator

To begin your virtual learning experience, follow these steps:

  1. Visit the lab's official website:

  2. Navigate to the "Electrical Engineering Lab" section.

  3. Click on "Electrically Emissions Lab."

Experiment Overview: Load Test on a Separately Excited DC Motor

The "Load Test on a Separately Excited DC Motor" experiment provides a hands-on understanding of testing a DC motor's performance using electrical loading. Here's how you can perform this experiment virtually:

Step 1: Accessing the Simulator

  1. Click on the experiment titled "Load Test on a Separately Excited DC Motor."

  2. Click the "Simulator" button to proceed to the experiment workspace.

Step 2: Setting up the Experiment

  1. Click on "Start and Track Experiment in Workspace."

  2. Examine the circuit diagram for the load test on a separately excited DC motor.

Step 3: Experiment Execution

  1. Adjust the field excitation of the separately excited DC motor to 220 volts.

  2. Control the armature voltage using the provided button to achieve a speed close to the rated speed (around 2500 RPM).

  3. Apply load by closing the load switch and adjust the field excitation of the DC generator to 220 volts.

  4. Close each load sequentially, store the data, and then open the load.

  5. After storing the data for each load increment, open the last load switch.

Step 4: Viewing and Analyzing Data

  1. Click on "Show Data" to view the measured data during the simulation.

  2. Examine the various parameters measured during the experiment.

Step 5: Generating Graphs

  1. Click on "Select Option" to choose parameters for graph plotting.

  2. Generate graphs to visualize the relationship between different parameters. For example, explore the variation of motor output with speed or motor efficiency.


The Electrical Emissions Lab Simulator offers a remarkable opportunity for students to engage in practical experiments related to electrical engineering. Through the "Load Test on a Separately Excited DC Motor" experiment, learners can delve into the intricacies of testing a DC motor's performance using virtual simulations. This approach not only enhances understanding but also provides a safe and interactive way to learn complex concepts.

By following the step-by-step guide outlined in this article, you can confidently navigate the simulator, conduct the experiment, and gain valuable insights into the world of electrical engineering. Embracing virtual labs like this one aligns with the modern approach to education, where technology and hands-on experience converge to foster effective learning outcomes.

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