Function Block Diagram The Function Block Diagram (FBD) is a graphical language in PLC which describes the function between the input output variables. FBD is in the form of elementary blocks and number of blocks are connected together to form a logic using connection lines or links. A function block is represented in the manner shown as: The connection is oriented, i.e. the line carries data from left to the right end. The connected blocks must be of the same data type (like integer, double integer
The Effect of Voltage on a Current Through a Filament Lamp Equipment: · Power Supply. (Ranging from 0V to 6V). · Variable Resistor. · Ammeter. · Voltmeter. · 6V Filament Lamp. · 7 Wires. Definitions: Ammeter - This is a device that measures the current of electrons in Amps. It has to be placed in Series on the circuit. Voltmeter -
seven measurements from 0 to 0.6 grams of sodium bicarbonate doing each test twice. For my experiment I will need the following equipment- Pondweed, Beaker, Water, Lamp, Sodium bicarbonate, Glass rod, Scales and a stopwatch Diagram Carrying
stop radiation at a small thickness. Equipment Strontium 90 beta source GM tube + counter Different thickness of different metals Clamps, bosses and clamp stand to hold the source and the material being tested. Method 1. Set-up equipment as in the diagram 2. Record the thickness and the material being used. 3. Record 5 readings of the radiation count, and record them in a table 4. Replace material being tested with different material or a different sized material. 5. Repeat steps 2 to 4 as required
water tray half full with water. Then I will collect 3g medium chips. I will measure 30cm3 of hydrochloric acid. I will connect the delivery tube to the measuring cylinder which is turned over which will be full with water. This is shown on my diagram. I will begin timing using a stopwatch and record the results every 10 seconds for 1 minute. I will use 0.5molar/dm3 to 3.0molar/dm3 of hydrochloric acid and record 3 sets of results and then I will take an average. Fair Test In order to
1.1 General Construction labour productivity has become big problem in construction industry. In many countries, labour cost comprises 30 to 50% of the overall project’s cost (Yates and Guhathakurta, 1993), and thus is regarded as a true reflection of the economic success. Because construction is labour-intensive industry, significance of this effect not only justifies the concern over its labour productivity, but it can also be argued that labour power is the only productive resource. There are
if I shouted "Three!" they would have to jump. The warm up will last about five minutes, so as not to tire them out. Skills and Practice For a practice/skills based activity, an obstacle course would be set up for them to complete (see diagram) while dribbling a football. They will each get a turn at this, and hopefully, it will prove to be fun as well as good practice. This activity will last about 5 - 10 minutes. [IMAGE] Text Box: The aim of this activity is to practice ball
the higher the temperature rise. I therefore predict the higher the concentration the higher the temperature change. Background knowledge I know that when I add the iron filings to the solution the iron will displace the Copper here is a diagram to show the reaction. [IMAGE] Controlled variables Ø The same mass of Iron filings Ø The same volume of copper sulphate solution Variables Ø Concentration of the Copper Sulphate (CuSO4) Safety Ø Wash hands if you get all copper
harmonic motion of a pendulum can be studied by attaching a ticker-tape to a pendulum bob and analyzing the dots marked on the tape. Theory ------ In this experiment, a string was used to suspend a 0.5 kg mass. [IMAGE] Refer to the diagram above, [IMAGE] Considering the tangential force on the mass, [IMAGE] [IMAGE] ∴The oscillation is simple harmonic. Therefore, we can find out more on simple harmonic motion by analyzing the ticker-tape we obtained after the experiment
and fuel in it. Diagram; Plan; First of all, I will set the clamp stand 3.5cm vertically higher then the crucible which then I put some mineral wool in and 30 drops of the fuel in. After that I am going to weigh the crucible making sure there is no other liquid or any other substances on the weigher, so I don't do not get any anomalous results. After I have recorded the weight I am going to place the crucible directly under the boiling tube, like shown in the diagram, and then I am going
depression for the known masses or the unknown mass. I have kept the way that I have measured the depression the same throughout and to ensure that this is as accurate as possible I have used a protractor to take the measurements, (see 'method'.) Diagram Method The apparatus was set up as shown above.
cm long. * 9 strands of constantan wire, 0.193 mm thick, 30 cm long. * Ammeter, 10 amps max. * Voltmeter, 20 volts max. * Variable resister * Heat proof matt. * 7 wire leads. * 2 crocodile clips. * Ruler. * Scissors. Diagram: Method ====== Firstly collect all the apparatus needed to complete the investigation and set the right apparatus into the correct positions. Start of by measuring the volts and amps of one of the wires at a low resistance, whilst
Problem There is a need to make a fence that is 1000m long. The area inside the fence has to have the maximum area. I am investigating which shape would give this. Triangles: Scalene [IMAGE] The diagram above is not to scale. Instead of having the perimeter to 1000m, only in this diagram, I have made the perimeters of the shape to 10, only to make this part of the investigation easier to understand. We know that the base of all the shapes is 2. The lengths for the equilateral triangle
How to carry out a safe and well thought through investigation. From the pre-test we decided to work with a 2 volts input on a D.C current, with lengths ranging from 10-40 cm and widths of 0.3mm to 0.7mm. Diagram [IMAGE] Method 1. Set up equipment as shown above in diagram 2. Choose decided width and length
average. I predict the time it takes the hydrogen to reach 30cm3 will range from 5s to 25s. I think that the reaction will happen like this Magnesium +Hydrochloric acid> Magnesium Chloride + Hydrogen Mg(s) + 2HCL(aq)> Mgcl2(aq) + H2(g) Diagram ------- [IMAGE] Measuring cylinder [IMAGE][IMAGE][IMAGE][IMAGE] Test tube Hydrogen Pipe [IMAGE]Bung [IMAGE] [IMAGE] [IMAGE]
the sucrose concentration increases, so will the rate of reaction, but only up to a certain point. This is shown through the diagram below. As can be seen, there is a point at which the rate of reaction becomes constant, and no longer increases. This is because of the way in which the substrate interacts with the enzyme to form the end products. [IMAGE] The diagram above shows that the substrates interact with the enzymes at a specific location. This location is known as the active site
attracted by the nuclei. As they are attracted, they collide with each other thus creating resistance. Factors affecting Resistance The length of the wire; the thickness of the wire; the material it was made from; and the temperature. Theory Diagram [IMAGE] [IMAGE] To Work Out Resistance To work out resistance we have used this formula V / I = R Ÿ V - Voltage Ÿ I - Current Ÿ R - Resistance The ‘magic’ triangle above shows how voltage, current and resistance can be
and more violently the reaction will take place. I think this because the more concentrated the solution is, then the more acid particles there will be to collide with the limestone particles, the force of these collisions will be increased. Diagram List of apparatus Hydrochloric Acid Distilled Water Limestone Pieces Weighing Scales Boiling Tube Measuring cylinder small and large Tub Bung and tube Boss Clamp Stand Goggles Stop clock
Plan: Clamp stand Burette [IMAGE][IMAGE][IMAGE]Titration equipment will be used to carry out this experiment. The equation for the reaction is shown below: Ca (OH) 2 + 2HCl à CaCl2 + 2H2O Lime water containing Calcium Hydroxide Diagram: [IMAGE] [IMAGE] [IMAGE] Apparatus and equipment: · Burette (50cm3 ) · 2 x Glass Pipette (25cm3) · Rubber Pipette filler · Standard Volumetric Flask (250cm3) · Glass funnel · 2 X Beakers (100cm3 ) · Clamp Stand
through air by the refractive index. 300,000,000 Refractive index Experiment: Apparatus list: Ray box Power pack Perspex D-Block Pencil Paper with degree markings. [IMAGE] Method: · Set up apparatus as shown in diagram. · Shine light ray through D-Block. · Mark out position of incident ray and refracted ray. · Measure angle I and angle r. · Repeat a number of times changing the position of the ray box each time. To make it a fair test I will use