Activity 3.2.1 Elements of Power (VEX)
Activity 3.2.1 Elements of Power (VEX?)IntroductionHave you ever blown a circuit in your house? What causes the circuit to blow? What can you do to avoid blowing a circuit in the future? You may have heard the word horsepower used when talking about a vehicle’s engine. What exactly does it mean? Does horsepower only apply to automobiles?In this activity you will learn about the different elements of automation power. You will learn the basic vocabulary associated with power. You will apply formulas to solve power problems.Equipment Elements of Power presentationProcedureAs your teacher delivers the presentation on Elements of Power, take notes. Use the prompts below to guide you.Define work.Define power.Define torqueDefine horsepowerWhat is wattage and how is it calculated?What are the two types of fluid power systems?How are fluid power systems operated?What are the advantages and disadvantages of pneumatic power supplies?What are the advantages and disadvantages of hydraulic power supplies?Complete the following calculations.If an object with 1000 lb of weight is to be raised vertically from ground level to 5 ft in two seconds, how much power is required?If a 110-volt appliance requires 20 amps, what is the total power consumed?A ? hp motor requires 120 volts. What amperage is required?150 lb of force is applied at the end of a shaft that is 2 ? ft long. It is applied at an angle of 90° to the lever. How much torque is produced? If the shaft is rotating at 350 rpm, what is the power?A 35 pound force is applied to a 3-inch cylinder with a 6-inch stroke. What is the power produced by the cylinder that moves its full stroke in 0.7 s?A pneumatic device produces 35 psi of pressure when a force of 20 pounds is applied. What is the diameter of the cylinder?A 227 pound compressor is supported by four legs that contact the floor of a machine shop. At the bottom of each leg there is a circular pad formed from a synthetic material to dampen vibration. The synthetic material will support up to a maximum pressure of 42 psi before deforming. What is the minimum diameter to avoid deforming the material?ConclusionDescribe how each of the three types of power could be applied.ElectricalPneumaticHydraulicDescribe a situation in which a combination of power supplies would be useful. ................
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