Engineering

A balanced star-connected three-phase load is shown in Figure 4. Determine the value of the line currents IR,IY and IB using mesh-current analysis.
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Your family has asked you to estimate the operating costs of your clothes dryer for the year. The clothes dryer in your home has a power rating of 2250 W. To dry one typical load of clothes the dryer will run for approximately 45 minutes. In Ontario, the cost of electricity is $0.11/kWh. Calculate the costs to run the dryer for your family for one year.
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A drum contains 3 black balls, 5 red balls and 6 green balls. If 4 balls are selected at random what is the probability that the 4 selected contain No red ballA. 0.1258B. 0.1587C. 0.2356D. 0.2289
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Cite the phases that are present and the phase compositions for the following alloys: (a) 15 wt% Sn - 85 wt% Pb at 100 o C. (b) 1.25 kg of Sn and 14 kg Pb at 200 o C
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3. According to the drag equation the velocity of an object moving through a fluid can be modeled by the equation -- -ky- where k is a constant. (a) Find the general solution to this equation. (b) An object moving through the water has an initial velocity of 40 m/s. Two seconds later, the velocity has decreased to 30 m/s. What will the velocity be after ten seconds?
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A pressure transducer has the following specifications: Input rage: 0-100 psi and the corresponding Output Range: 0-5 Volts. Linearity Error: 0.10% of the Reading Hysteresis Error: 0.10% of the Reading Sensitivity Error: 0.15% of the Reading Zero Drift Error: 0.20% of the Reading Its output is read via a voltmeter with instrument error of 0.10% of the reading and resolution of 0.01 V. If the applied pressure on the transducer is 65 psi, what is the design stage uncertainty of this pressure measurement system?
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Here are the city gas mileages for 13 different midsized cars in 2008. 16, 15, 22, 21, 24, 19, 20, 20, 21, 27 , 18 , 21 , 48 What is the minimum ?
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What Is Soil Tunneling?
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In a certain pressing operation, the metallic powder fed into the open die has a packing factor of 0.5. The pressing operation reduces the powders to 70% of their starting volume. In the subsequent sintering operation, shrinkage amounts to 10% on a volume basis. Given that these are the only factors that affect the structure of the finished part, determine its final porosity.
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A test bar of nonferrous material has a diameter of 0.253 inches. Upon applying a tensile load, the sample exhibited 0.002 plastic strain at 3400 lb and the maximum load during testing was 6200 lb and occurred at an engineering strain of 0.65; and breaking occurred at 4400 lb. The sample diameter at fracture was measured to be 0.15 inches. Required:a. The yield strength of the material is :________b. The UTS of the material is:________
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Match the goal to the program or publication.1. to improve the energy efficiency of all commercial and industrial buildings by 20% by the year 2020 2. to reduce water use of appliances by 20% 3. to devise a set of guidelines for choosing green building materialsWaterSense programFederal Green Construction Guide for SpecifiersBetter Buildings Initiative
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A heat pump heats the air in a rigid, insulated cuboid room of size 25m x 10m x 4m. The heat pump consumes 15 kW of power. The initial temperature and pressure in this room are 12C and 1 bar, respectively. With an average coefficient of performance of COPHP= 3.0 over the range of air temperature in this room. Requried:How long will it take to raise the temperature in the room to 27 C?
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The pressure gage on a 2.5-m3 oxygen tank reads 500 kPa. Determine the amount of oxygen in the tank (mass in kg) if the temperature is 28C and the atmospheric pressure is 97 kPa.
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The calculated value of the thermal conductivity of the carbon nano tube was found as: KCN = 3113 W/m-K, however, the theoretical value of the thermal conductivity of the wire is actually: K = 4500 W/m-K and the island separation is 5 m (this is the actual spacing between the two islands). The difference between the measured and theoretical values is due to the contact resistance between the nano tube and the islands in the experiment. Required:a. Calculate the thermal contact resistance (Rtd) that exists between the carbon nano tube and the top surfaces of the heated and sensing islands. b. Using the value of thermal contact resistance calculated in part A, calculate the fraction of the total resistance between the heated and sensing islands that is due to the thermal contact resistances for island separation distance of 5, 10, 15, and 20 m.
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find the volume of the pond with the following dimension length 40m breadth 10m height 1.2m depth 0.9m express in both meters and feet
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Request for proposal (RFP) is a type of document that contains the information and proposals mostly through the bidding process. This document is regarding the valuable assets, services, entity, commodity, etc.
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From what year did 3.5G enter Vietnam?
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In the figure below, this double nozzle discharges water (at 10C, density= 1000 kg/m3) into the atmosphere at a rate of 0.50 m3/s. The pressure at the inlet is to be 315612 Pa. If the nozzle is lying in a horizontal plane. Jet A is 10 cm in diameter, jet B is 12 cm in diameter, and the pipe (1) is 30 cm in diameter. The x-component of force (Rx) acting through the flange bolts is required to hold the nozzle in place is:
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The steps for proper studing for the exam. -1 (use: First, Then, Next, After that, Finally)
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A circuit diagram for a lighting circuit is shown in Figure 6.Figure 6230 V ACARL1+B T 12 V044Explain the function of the relay RL1 in the lighting circuit shown in Figure 6.[2 marks)
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A watermelon is thrown off of a roof to the ground. Its momentum changed from 50kgm/s to 2kgm/s. What is the impulse?
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1. What is the maximum value of the linear density in a crystalline solid (linear density defined as the fraction of the line length occupied by atoms, assumed as spheres and only counted it their center is on the line)?2. What family of directions has the highest linear density in the FCC system? 3. What family of directions has the highest linear density in the BCC system? 4. What family of planes has the highest planar density in the FCC system? 5. What family of planes has the highest planar density in the BCC system? 6. What family of planes has the highest planar density in the HCP sytem?
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