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University Degree: Engineering
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Study the structure of a transformer and find out the efficiency and voltage regulation of a transformer.
Construct the above transformer with the apparatus provided. 2) Connect the below circuit. 3) After completed the circuit, then invite lecturer to check the circuit. 4) By varying the adjustable transformer, verify the functioning of the transformer. But never turn the output voltage of the adjustable transformer more than 70V. Open circuit Test: Procedure 1) Adjust output voltage from the adjustable transformer step by step, measure the V2 2) Fill in the below table V1 (Volt) A1 (Ampere) V2 (Volt)
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Results The following figures and graphs represent the theoretical analysis and the experimental results obtained from the Resistor-Capacitor (RC) network, the Flow Restrictor - Volume/Vessel network, the Spring - Mass Damper system and Series LCR network respectively. The numbering of graphs are in respect to the numbering of figures as shown below. 2. Discussion The experimental results of the RC showed some differences from the theoretical results.
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The purpose of this study is to obtain a mathematical model for the door closer such that its observations of its behaviour and analysis holds true for the real door closer.
A mathematical model of the door closer will be derived and its behaviour will be analysed. Observation: 1. The door is initially at rest. It is at an angle of 0 degree. 2. The door rotates around the hinge when someone pushes the door. When the door is left at an angle less than 90 degrees, the door returns to rest position. 3. The movement is limited to 90 degrees from rest. At this position the door is completely open 4. If the door is pulled to an angle and then released, it will try to reach its rest position at an angle of 0 degree without slamming.
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Frequency Modulation Lab. The aim of this experiment is to examine Frequency Modulation. The experiment is divided into two parts, Experiment 1 and Experiment 2. Experiment 1 investigates frequency modulation as performed by amacom 2s reactance modulat
Experiment 1 investigates frequency modulation as performed by amacom 2's reactance modulator and varactor modulator circuits. The audio signal applied to the circuits modulating input modulates the frequency of a carrier sinewave. Experiment 2 investigates the Phase-Locked loop Detector. Theory: Fig 1 In a reactance modulator (Fig1) the base bias voltage increases as the oscillator frequency decreases. A varactor modulator behaves differently (Fig 2)
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Amplitude Modulation and Detection. The aim of the lab is to examine the operation of an AM modulator and two types of detector, an envelope detector and a synchronous demodulator and to examine the results.
Envelope detectors operate by extracting information from the envelope or shape of the wave which is carried by the carrier wave at a high frequency. These contain a number of disadvantages such as they are not linear and their distortion levels are high.2 An envelope detector for AM signals Figure 13 Synchronous demodulation is superior to envelope detection but is less often used due to the complexity of the circuitry. This operates by producing a local oscillator signal on exactly the same frequency as the carrier and mixing it with the incoming signal.
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With this same process the transistor can be used as a switch, but in this case there will be a certain amount of volts to open the gate, for example, five volts will be needed to open the gate, if it is more than five volts the gate will be open if it's less than five volts the gate will stay closed. Double Pole Double Throw Switch Function- This switch is a pair of switches the work together.
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Fibre Reinforced Polymers Research Proposal. In this project we set to investigate the elasticity and long term impact of FRP concrete under internal and external reinforcement.
The mechanical properties of FRP are determined by the amount and type of underlying fibre used. The primary material used is referred to as the matrix. This is a form of plastic which is weak and unsuitable when used as the core material. The matrix is often reinforced by stronger and stiffer reinforcing fibres, which are Carbon, Glass or Aramid. In this project we set to investigate the elasticity and long term impact of FRP concrete under internal and external reinforcement.
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This risk assessment will encompass Group 3s design prototype for a crusher loader, in the context of metalliferous underground mining operations. The prototype in question is similar to a LHD,
Unmodified risk rating: 5D (V. High risk) Current controls: - Curved chute (top face open) Controls to be added: - Completely enclosed chute (top face closed) - Safety procedures to ensure personnel maintain a safe distance when the vehicle is active - Slower bucket movement to decrease momentum of ore Modified Risk rating: 3A (Low risk) Particulate matter: The bucket dumps its load onto the chute with a significant enough force to raise dust, and small particles of broken up ore, into the surrounding air.
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� Slope of the isotropic over-consolidation (swelling) line � Slope of the isotropic normal consolidation line � Specific volume These five parameters are illustrated in Figure 7.1. The critical state line shown in the plane is the locus of critical states projected onto that plane. The critical state line has a slope of, , which is related to the angle of internal friction of the soil.
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Soil gets into the creep stage after its primary consolidation. In the stage the effective stress is invariable, whereas the deformation still grows at a low rate with time. Relaxation: Stress relaxation describes how materials relieve stress under constant strain. Its nonlinearity is described by both stress relaxation and creep. Strain rate effects: When creep happen under the undrained normal-consolidation condition and drained over-consolidation condition, the creep strength decreases along with the decreasing of the strain rate. Time effect: When creep happens under the undrained normal-consolidation condition and drained over-consolidation condition, the creep strength Su decreases with the extending of loaded time.
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100 2.05 4.2 80 1.80 3.24 70 1.70 2.89 60 1.63 2.66 40 1.27 1.61 20 .96 0.92 Part III Mass Number of oscillation=30 Mass(g) (s) 94 1.26 66.3 1.25 70.5 1.26 Preliminary question solutions 1. * Yes the period depends on the length of the string because the longer the string, the more the pendulum swings. If the length of the string is short, the pendulum will not swing for long, therefore leading to getting a small period.
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4. Obtain relationships between partial pressures and conversion rates of all compounds and use this to calculate (-ra) by using equation 3. 5. Finally bed volume can be calculated from the equation 1 below by using Simpson's rule as the bed volume is represented by the area under the curve and the height of each bed can be found by dividing the volume by area.  A detailed overview of the steps mentioned Step 1 Convert all the flow rates from kg/hr to kmol/hr to establish the temperature of the varying conversion rates. Compounds in the reactor feed Flow rate kg/hr Flow rate kmol/hr Ethyl benzene 27632 260.68 Steam 62933 3496.28 Methylbenzene 27 0.29 Styrene 215.4 2.07 Step
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Although the education systems are different in most countries around the world, the aim of this education is similar. The purpose of this report is to outline the similarities and differences between Saudi Arabia and Australia in the education system. There are some similarities in the education system between Saudi Arabia and Australia. In both countries, the early childhood education is not compulsory such as: kindergarten which starts from age 3 to 5 years old in order to develop their skills and knowledge. Also, children wear a school uniform, which varies from one state to another. Moreover, class size in both countries is a maximum of thirty students.
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Linear measurment. The objective of this fieldwork is to conduct a survey of a small area by applying techniques of linear measurement and also work out the area of irregular shape at the site.
4. Bubble Staff must be held vertical to ensure accuracy. Some staffs may incorporate a circular bubble. In normal case to ensure accurate work it is necessary for the staff to be held vertical, a small rod level may help the holder. Procedures 1. Two stations are set up on the opposite side of each other of the measured area. 2. A survey line which joins the two stations together which was set up by 30m tape and the reading was recorded. 3. The survey portion was outlined on a sketch paper. 4. Regular interval between the stations is determined, which was depended on the length of the survey line.
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* To carry out test to identify the sources of noise, vibration and harshness in SKF Jaguar bearing. The objectives of this experiment were: * To complete test to acquire a practical knowledge of new and used bearing performance and method of condition monitoring of bearing to predict failure. * To analyses the health level of a bearing in rotating machinery through noise (dB level) vibration monitoring methods. * To give recommendation for improve test equipments and procedures for identifying specified in SKF Jaguar bearing. Experimental Procedure The motor drove the SKF Jaguar bearing which was installed in the fabricated hub, and using the inverter to control and adjust the rotational running speed of the electric motor.
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Part A - Layer 1 Operation in an Ethernet LAN The Physical Layer, also known as Layer 1 in the OSI model comprises of the electrical signalling and cables. This is the interface where information enters and exits the OSI model. This is the only layer in the OSI model; were data is physically transferred over the network interface. The main functions of the Physical Layer are: (Reference 2) * To Define Hardware Specifications: This is the details of operations; which include cables, connectors, wireless transceivers, network interface cards and other hardware devices that function on the Physical Layer, examples include RJJ45, NRZ, Coaxial, Twisted Pair.
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The equation of incompressible fluid flow, + f where is the kinematic viscosity, v is the velocity of the fluid parcel, p is the pressure is the fluid density. B).Derivation of Newtonian Fluid: Navier-Stokes Equation For Newtonian fluid the viscous stress is proportional to the rate of shearing strain (angular deformation rate). The stresses may be expressed in term of velocity gradients and fluid properties in constitutive equation as follows: For most gases and for monatomic gases exactly, the second coefficient of viscosity is related to the viscosity by a condition that is known as Stokes hypothesis.
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Second, calculate the friction factor of the actual pipe with given initial conditions. First, the understanding of energy loss in a fluid can be realized by measuring a pressure differential along a certain length of pipe. Numerical values for this objective can be found later in this report. Second, the calculated and measured friction factors were obtained using Darcy's equation and one of two Colebrook equations. The flow was classified as turbulent or laminar based on the calculation of the Reynolds number.
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Every employee uses a Dell workstation and monitor. These pieces of hardware allow the employee to connect to Reed Smith LLP's network and function as a corporation. The workstations use the Windows operating system, Windows XP. Windows XP, a Microsoft product, released its first edition in 2001 (Microsoft, 2009). While this operating system is no longer being sold, Reed Smith LLP decided to hold off on upgrading until the release of Windows 7. Due to the compatibility issues Windows Vista, the operating system released after Windows XP, had, Reed Smith LLP chose not to upgrade.
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Scientific and technological developments such as medical researchto find a cure for AIDS, modern health care and computers are beneficial in the role of improving people's lives and do not come at the cost of undesirable changes to them. Today with new technology, medical research is being done everyday to help find cures or vaccines for devastating diseases such as Cancer, AIDS, Alzheimer's and Leukemia. Being diagnosed with one of these diseases is hard, but growing up with them is even harder. "AIDS was first identified in the USA in 1981.
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Please provide the example and its application. Answer: i) Grout = cement + water ii) Mortar = cement + fine aggregate + water Give examples of usage for Grout and Mortar: Grout ==> patching concrete, re-surface concrete structural members, to fill space and or cavities and provide continuity between structural elements. Mortar ==> brick-laying, bedding of small concrete component such as ridge tiles, and for the sealing of certain types of paving, screed is a mortar applied to a floor, render is a mortar applied to a wall (ratio 4 Sand:1 Cement) (Source: http://www.axp.mdx.ac.uk/~john49/cemfaq.htm, http://www.pavingexpert.com/mortars.htm, http://www.nrmca.org/aboutconcrete/cips/22p.pdf, http://www.maconline.org/tech/materials/grout/whatisgrout/whatisgrout.html )
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The specimen was placed into the top and bottom jaws of the testing machine. The material was equally and properly gripped. 4. The extensometer was attached to the 'neck' of the specimen. 5. After all these set up, the load was increased gradually at an interval increment of 400kgf as in the case of brass. Whereas mild steel at 500kgf interval. The reading from the extensometer at every interval of the loading was recorded. 6. The load was applied gradually until the yield point of the specimen had reached, the extensometer was removed and then loading was continued until reaching its breaking point (fracture).
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The profile of taker inn is coarse than profile of main cylinder and doffer. In main carding zone there is a main cylinder whose speed and circumfernce is greater than taker inn. Above main cylinder there is a revolving flats arrangement.There is total 80 flats in which 30 are in working condition, distance between flats and cylinder is equal to staple length.lever is also present there to move cylinder upward and downward.flats are
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The methodology involves the systematic examination of the task with a view to identifying all the associated hazards. The following steps are an example what should be looked at when creating a Safe System of Work: * The task o What is the work being carried out o What specialist tools are used o Who will do the task * Hazards associated with the task o From tooling o From
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Scottish power purchased one of three electric buses which were built for Strathclyde Public Transport (SPT) by Smiths Electric Vehicles. SPT never made full use of these buses. The bus used on the Whitelee site is powered by 54 lead acid gel batteries, arranged in two parallel banks of 27. These batteries are located within the bus chassis. Mechanically the bus is a standard design, with the typical front wishbone and rear trailing arm suspension. The braking system is air over hydraulic, incorporating an air activated spring loaded fail safe parking brake.
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