Motors, Gears, & Generators Lab
Objectives:
1) Learn about motor and generator operation.
2) Generate and use motor torque/speed curves.
3) Learn about gear ratios and observe how they affect the rotational speed and torque of a motor or generator.
Pre-lab Questions
Answer the following questions before you begin the lab: For the motor characteristic curve shown below, determine the equation of the line: torque (T) as a function of the rotational speed ( ). In the figure below, is the stall torque and is the no load speed. The equation of the line should be written in terms of the variables above.
How can you calculate the gear ratio of a simple gear train with two gears? List 4 expressions that you could use to calculate the gear ratio. What is the difference between a motor and a generator? (Hint: what are the energy conversions that occur in each)
Problem Description:
Motors and generators are used frequently in engineering applications. In fact, you will use them in your final project. Gears (or pulleys) are usually used to transmit the power from the motor (input) to the output. A pair of gears forms a simple gear train. As engineers, you will need to understand how motors and generators work in order to pick appropriate ones to use in different applications or to know how your design will behave when hooked up to a particular motor/generator. In your final project for this course, you will use a generator (i.e. for wind power generation) and
3.) Starting with 20g of weight attached to the string on the motor (as seen above) perform 3 experiments with each weight group (20g, 40g, 60g, 80g) and record their voltage, time and current.
| Jonathan Archer and Zefrem Cochrane are employees of the Rugged Trucks Company, a light truck division of Gigantic Motors Corporation.
The way the wind turbine works is when the wind blows, the blades on the wind mill (or turbine) are spun to run the motor that is attached to the back of the turbine. The motor transfers its energy through wires to a substation where the energy is transferred into electricity that can be useful for residential and commercial areas. The energy is then delivered through wires across the country.
Wind turbines have altered the way that we get our energy. Wind turbines are used to harness wind power and turn into electricity. They are comprised of usually 2 or 3 blades that are connected to a shaft that was attached to a generator which then turns into electricity. Although we now generally use it to produce electricity, wind energy was originally used in the form of windmills to do chores and housework. Because of the rapid increase in the use of wind turbines, it has added jobs and changed the way we get energy.
A hydroelectric generator is a machine that uses mechanical energy to generate electricity, the hydroelectricity comes from a large volumes of falling water to create the mechanical energy. For more than 100 years
In the power engineering field I will have to learn things like the operation of steam boilers, pressure vessels, fired heaters, and refrigeration systems. When learning these things
8: Electricity can be generated from many different sources. Explain how an electricity generator works to convert energy from the original source in to electricity.
When the wind is blowing on wind turbines it produces electric power, Fans are old techniques used in the mills and then the water pump, but now it has developed the technology and has become used for electric power production.
The first thing to learn is how the basic engine works. According to Nancy Hall, writing for the National
The motor, it is used for a wide variety of purposes, it is used in cars, clocks, drills, fans, and electric toothbrushes (“Energy Transfer”). As one can tell, motors play an important part in daily life, people can’t go a day without using a product that uses a motor. Motor’s are normally used to spin a part of the item that the motor is in, but how does the motor spin the part that needs to be spun.
As illustrated above, the three phase induction motor consists of two main parts; a) stator which is the fixed non moving part, b) rotor which is the moving (rotational motion) part fitting into the stator. the only separation between these two parts is a small gap of air with a distance ranging from 0.4 mm to 4 mm, this distance depends on the motor's power.
The prime difference is that a battery is meant to store power and a generator creates power. In a power outage, a generator can continuously produce power; a battery can only distribute what has been
Brushless permanent magnet DC motors are being manufactured and used increasingly in everything from home appliances to automobiles due to their inherent advantages. The merits of these motors could be enhanced further according to another design approach method which alters the typically used winding parts for low to medium power range motors. This paper deals with the high power brushless DC motor used for traction in a 48 V golf cart system.
You can build a simple motor with magnet, wire, jumbo paper clips, sandpaper, neodymium magnets, and a compass. There are motors all over the place in your house. You use electric motors in your everyday life. When you connect the wires and connect it completes the current and makes the motor start. The copper wire will start to spin when the current is completed. I am build a simple motor and see if it spins slower or faster with bigger and smaller batteries I think it will spin faster with bigger batteries.
Motors are everywhere, the power almost everything we use, from kitchen supplies to our automobiles and transport even to kinds toys, they are the essence of putting an object into motion. Most motors consist of the same various items needed to for it to work, magnets, coils of wire, and a power supple. Whilst in the process of discovering what a motor is the desired motor to be used for this investigation is a simple DC motor were a power supply is used to power the motor to start to spin unlike some other motors like in cars where they rely on all other forms of injections for it to power such a large object. An electric motor is all about magnets and magnetism: A motor uses magnets to create motion. Electric motors involve rotating coils of wire which are driven by the magnetic force exerted by a magnetic field on an electric current. They transform electrical energy into mechanical energy (Internet 1). As a simple motor will be created, the design of how to create this can be seen in figure 1.1.2 to justify how simple this is