METHODOLOGY Materials The materials for making the aero-magnetic motor are (a) Twenty pieces ferrite ring magnets, (b) chipboard, (c) Fan blade, (d) rectangular mirror, (e) Two sixteen inches aluminium rods, (f) a twenty-one inches aluminium rod, (g) cardboard box, (h) rectangular white board, (i) masking tape, and (j) black spray paint. For the experiment conducted the researcher used twenty pieces of ferrite ring magnets, pitcher, and two fan blades. One fan blade measures 19 centimetres and the other measures fifteen centimetres. Procedures A. Construction of the Device In making the device the first step was to make the rotor. The aluminium rod was used with a length of twenty-one (21) feet. The masking tapes covered …show more content…
The first experiment was to determine the significant difference between the lengths of the gap from the rotor with the specified number of magnets. The experiment utilized eight (8) magnets. In this experiment, four different setups were prepared by the researcher. The first setup used two magnets in the rotor. One magnet was placed near the fan blade and the other magnet was placed on the other end of the rod. And after the magnets were secured the rotor was placed atop the stator. The length of the gap between the rotor and the stator was measured using a ruler. The second setup used two magnets set on each side of the rod and it was positioned above the stator then the gap was measured. In the third setup there were three magnets on each side and the same process was done as with the first and second setups. The same procedure was also done in the fourth setup with four magnets on each side of the rod. The result of the experiment was collected and written in a paper. The data was then interpreted and the significant results were …show more content…
The functionality of the device would be how the rotor rotated with the use of different sizes of fan blade. Two fan blades with different size were used for the experiment. For the first setup a small fan blade nine (9) centimetres in length was attached at the end of the aluminium rod. The rod had two magnets attached through. Then the rotor was put above the stator and was spun to see the result. The second setup used a bigger fan blade measuring fifteen (15) centimetres then same procedure was done to test the functionality of the
Such as, 2 2 2 , , r s s r r r s r r r L L R L R M L L M L PM L R Where rd s i u , , and r : are respectively, the stator voltage, stator current, rotor flux and rotor speed. The indices d, q indicates a direct and quadrate index according to the usual d-axis and q-axis components in the synchronous rotating frame. M L L R R r s r s , , , , and : are respectively, stator and rotor resistance, stator and rotor inductance, mutual inductance and total leakage factor. P, J, TL and f: are respectively, the number of pole pairs, the rotor inertia, the load torque and the friction coefficient.
At first, the magnetic field sensor was plugged into analog A. Next; a magnetic field sensor was open in the Database Studio software by following several instructions. Once the magnetic fields sensor was free, we clicked on the “digits” that was on the lower left side of the screen. Then, the window appeared where it was ready to record the magnetic field. After the computer part was completely set up, we measured the diameter of the Helmholtz coil several times to get the more accurate measurement and recorded the measurement in the data. Later, we set up our device in a way that current flows in the same direction for all the coil.
4.11 Motor A DC motor is an electrical machine which converts electrical energy into mechanical energy. A magnetic field is generated by the current carrying conductor and when this system is placed in external magnetic field then the force is exerted which is proportional to the strength of the external magnetic field and to the current in the conductor, then motor will rotate. If the direction of current is reversed then the direction of rotation of motor will also reverse.
Our dependant variable in this experiment was the dissolved oxygen parts per million in each sample. We recorded this data on the white board back in our classroom, writing down the specific parts per million that we found in the water. The variables that were the same for all
He also noticed that as the coil loops increased so did the voltage as read on a galvanometer. This process of moving the magnet in between the coil wire demonstrated electromagnetic induction. The experiment performed by Erin Bjornsson they talk about how to perform “Faraday’s Experiment” (Bjornsson, 2013) By following similar steps performed by Michael Faraday their hypothesis asked “what will happen when you pass a strong magnet through a loop of copper wire.”
a. Water boils to produce steam at 100 C (212 F) b. Water produces gas with sodium metal c. Water and oil separate when combined d. Water dissolves sugar 22. In the experiment, students put brine shrimp in water with different concentration of salt and counted the number. Which of the following changes to the experiment will increase confidence in the validity of the result? a. Count the number of dead brine shrimp instead of living brine shrimp b. Add more brine shrimp to the water with the highest salt concentration c.
Stanley Milgram wants to know how people would go in obeying an instruction. For his experiment he stand a procedure it is different from others. His experiment taken at human beings. 40 males aged between 20 and 50 were selected for the experiment, These 40 males were professionals who is unskilled. There is a teacher and learner in his experiment.
In most cases of any scientific paper or academic works, the abstract will answer the most basic question like; why/project the study was done, what was done in the study/project and in if so how, what was found in the project/study as in results/observations, what these findings might mean, if there was any. [1] 3. The authors exposed seedlings to two different Carbon dioxide levels, soil temperature, and light conditions for one growing season. The two Carbon dioxide levels were 392 µ to a 784 µ , the two soil temperature was 17 and 22 degrees Celsius, and the two light conditions were 100% and 30% of the original 100%. 4.
8) Explain how each experiment type (question 7) differs from the
State-of-the-art vehicles and systems were being developed that could transport people and cargo in more efficient manners, and new manufacturing systems were able to create these vehicles at a much higher rate. One of these systems was the variable pitch propeller, invented by Wallace Turnbull in 1922. Unlike conventional fixed pitch propellers, this propeller utilized a motor to alter the pitch of the blade and cut through varying amounts of air. This helped the airplane obtain maximum power and thrust on takeoff, and then transition to an economical cruise setting, which, “…Made the air-transport industry possible” (Freeman-Shaw et al. 43). With this invention, aircraft were able to transport considerably greater volumes of people or cargo, which provided significant economic benefits.
Ventilation of a person through various activities Camila Gonzalez. This lab was made with the aim of proof that making different activities can alternate the ventilation rate, also is to see the variation of work our respiration system makes. We can see the different things and situations that can affect the normal process of ventilation and respiration, like the weather and the clothes that were limitations for doing this experiment because first the weather was so hot, so the person get tired early and began to ventilate faster and second the clothes wasn't appropriate for making the activities, because they also make weight and makes that the person get more tired. We use more than one person to make a comparison of the ventilation
Similarly to the previous measurement devices, the information was collected from various sources from both Knovel database and a Google search. Rotameter:
Proper sample size was used and the trial duration was long enough to capture the characteristics of
The time it took for each of the trials was a recorded and then based on that along with the radii measurements the calculations for the centripetal force were conducted. The purpose of this experiment was to measure the period of a swinging stopper for three selected radii in order to calculate the centripetal
This experiment has to be carried out carefully