Efficiency of a motor experiment

Apparatus and materials Switch unit (very useful to break circuit quickly) Line shaft unit Motor unit Demonstration meter, - amp DC Rubber band or driving belt. To compare the operating costs of an existing standard motor with an appropriately-sized energy- efficient replacement, you need to determine operating hours, efficiency improvement values, and load. Efficiency of an Electric Motor.

Open, 2-pole electric motor and pulley. The percentage efficiency of the .

An electric motor converts electrical energy into mechanical energy (or work).

You will determine the efficiency of an electric .

Created using Macromedia Flash Software. A motor is used to lift various small masses. The energy supplied by the motor can be calculated from the potential difference, the current and the time take. Step by step plan for an experiment to measure the efficiency of an EM motor by lifting masses with metho , conclusions, evaluations and theory Extension activity: efficiency vs load.

In this case the current limiting resistor for the LED is absolutely necessary.

Actually you may be better off using variable resistor (sometimes in this setup it is called brake resistor) connected . Experiments with an electric motor provide good opportunity to demonstrate some basic laws of electricity and magnetism. The cost of electricity depends upon the amount of electrical power use the amount of time it is used for, and the charge made for each unit of electricity. It is possible to reduce heat losses from homes using insulation, . DC motor and calculate its efficiency.

EFFICIENCY OF ENERGY CONVERSION 57. The time units cancel out, and . Measure the efficiency of solar cells as they convert sunlight to power. In our experiment , the solar cell and motor had V = 1. There are many experiments that can make an outstanding science project.

In most of your experiments you will need to record your measurements and create tables and graphs for your project.

We are using the term machine in the discussion of power losses owing to the fact that no distinction need be made between the losses in the D. The law of conservation of energy dictates that the input power must always be equal to the output power plus the losses in the machine.