Early measuring instrument for small electric currents consisted of coil of insulated copper wire wound on a circular non-magnetic frame. Working based on the principle of the tangent law of magnetism. Galvanometer works on the principle of conversion of electrical energy into mechanical energy. When the current flows in a magnetic torque. Galvanometer has a word called sensitivity of galvanometer is defined as the current in micro ampere required to consume one millimeter deflection on a scale placed 1m away from a mirror.
Ferricyanide; A Cyclic Voltammetry analysis Analytical Lab 1: 2410 L Name: Austin Stevens Lab Partners: 3:05-5:55 Group 2 Date: 10/12/15 Introduction: This Experiment was done to determine the concentration of an unknown, the half-wave potential, and to the determine the calibration curve of the reduction of ferricyanide to ferrocyanide through the use of cyclic voltammetry1: Fe(CN)63- + e- ↔ Fe(CN)64- Cyclic voltammetry uses the knowledge of voltammetry; which is the measure of a typical current response caused by an electrical current which is captured on an electrode and then measured, to determine potentials2. Cyclic voltammetry is one major proponent of voltammetry. Cyclic voltammetry
Using the aforementioned experimental setup as shown in Fig. 1, three ejectors as shown in Fig. 2 were investigated to determine the effects of the operation temperatures, nozzle exit position, and the diameter of the constant area section, dcas, on the working performance of the steam ejector powered by extra low-temperature heat source. In this investigation, the working performance of the steam ejector mainly includes system COP, cooling capacity and critical condensing temperature , Tc*. For the test, the generating temperature, Tg, ranged from 40 °C to 70 °C, and the evaporating temperature, Te, was set at 10 °C and 15 °C, respectively.
For these small fields that we cannot sense, we use a tool called voltmeter to measure different aspects of electricity. By the end of the experiment, maps of equipotential will be created, thus generate an electric field. In this experiment, a negative probe of a voltmeter is connected to the negative terminal of the power supply. Data of voltage readings will be collected based on the x-y coordinates. An increment of 3cm for every x coordinate (x=0, 3, 6, 9, 12, and 15) and voltage readings of .25, .30, .50, .75, and 1.00 will be measured.
Is the voltage across each of the resistors different for every resistor? The voltage that runs through the resistors are the same when current flows through the resistors, it is different when the voltage drops. Q7. Assume that you have a 10-Ohm, a 20-Ohm, and a 30-Ohm resistor in series connected to a 6.0-Volt battery. What is the total resistance of this circuit?
Results and Discussion The effects of ultrasound, electric field strength, the time of applying the field and sonication time on a number of E. coli, and energy consumption of the process in mint distillate were investigated. As shown in Table (), the full quadratic model for the data had a significant effect on the reduction of E. coli in the samples of mint distillate. The adjusted determination coefficient, standard error and coefficient of variation (C.V) of the model were equal to 0.9984, 0.049 and 2.39, respectively. According to ANOVA (Table 1-4), with the exception of the electric field strength coefficient* sonication time and the time of applying the electric field * sonication time, other coefficients of the variables in the model
To have gotten a 0% error between the experimental and actual value for CH3COOH, the pH would have been measured at about 4.75, which is slightly more acidic than 4.80. The percent error was calculated to determine how accurate the Ka of acetic acid was: Since the calculations yielded a 20% error, this shows that experimental error occurred during the experiment. Factors that could have affected the results included improper reading of the meniscus for volume of NaOH, not allowing the NaOH to fully drip into the buret after removing the funnel, adding too much acetic acid after the indicator flashed pink to get an inaccurate equivalence point, and not allowing the solution in the beaker to mix thoroughly to get an accurate reading from the pH
From these data, the specific capacitance is calculated using the equation C= 2i*t/SΔV where i is the applied current, t is the discharging time, S is the area of the tested electrode in supercapacitor, ΔV is the voltage window. The surface-specific capacitance of sample 4 at 0.5mA is 2.611 mF/〖cm〗^(-2). For the galvanostatic charge and discharge curves before and after 100 cycles, it can be concluded that the sample is charged and discharged faster after 100 cycles, which indicated that the capacitance is smaller after repeated charging and discharging for many times. The calculated surface-specific capacitance of sample 4 after 100 cycles at 0.5mA is 1.625 mF/〖cm〗^(-2). From visual observation, less polyaniline is attached to the carbon fiber after 100 cycles’
FEA Treatment of Thermal Modeling The basis for thermal analysis in ANSYS is a heat balance equation obtained from the principle of conservation of energy. The finite element solution performed via Mechanical APDL calculates nodal temperatures, and then uses the nodal temperatures to obtain other thermal quantities. The ANSYS program handles all three primary modes of heat transfer: conduction, convection, and radiation. Mesh was created in Ansys. The mesh had 144005 elements.
The current loop transfer function is acquired through the analysis of the single-phase equivalent circuit shown in Fig. 12. The voltage source represents the voltage on the coupling transformer. The dynamic model is obtained through the circuit analysis using average values associated to the switching period. Under these conditions, the voltages Vs(t) and VL(t) are constants.