Engineering, 12.02.2020 02:24 babydoll1981
Light emitting diodes (LED) uses a fraction of the power consumed by an incandescent bulb (IB) for the same amount of light output measured in lumens. Design an actual setup that demonstrates to the public in an intuitive way this significant energy savings. Although you are urged to be creative in your design and there is no standard answer, you may assume that two DMMs are available to you together with LEDs and IBs (with the same output lumens). Note that LEDs and IBs available from stores require 110V AC. State the electrical quantity (or quantities) you plan to measure and draw diagrams to show circuit connection.
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Engineering, 04.07.2019 03:10
What precautions should you take to prevent injuries when dealing with heavy loads?
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Engineering, 04.07.2019 18:10
Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.
Answers: 1
Engineering, 04.07.2019 18:20
Acertain flow of air (at stp) has a velocity distribution given by v i (in ft/s). if this flow is going through a 4 ft square area in the yz-plane (centered at the origin), what is the mass flow rate (in lbm/s)?
Answers: 2
Engineering, 04.07.2019 19:10
What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces.a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.
Answers: 1
Light emitting diodes (LED) uses a fraction of the power consumed by an incandescent bulb (IB) for t...
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