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Suppose you have a 2 kW electric heater rated for 220 volt operation, which you intend to operate at a reduced power dissipation of 1kW. Calculate the proper amount of voltage you would need to achieve this reduced power dissipation, and explain how you could use an ideal transformer to supply this reduced voltage to the heater.
For a given lithium ion battery, it can supply 0.85 ampere-hours, or 850 (mAh) with a constant output voltage of 3.6 (V). How much energy is stored in this lithium ion battery. How much energy is imparted to an electron that flows
Measurements on sodium have provided the following data: resistivity 4.7 ×10-8ohm m, Hall coefficient -2.5 × 10-10m3C-1, critical wavelength of transparency 210 nm, and density 971 kg m-3. Calculate (i) the density of electrons, (ii) the mobility, ..
The air density is 1.23 kg/m^3. If the rolling frictional force is determined to be 47,500 N and the power required to sustain the current velocity is 4.681 MW, determine the approximate drag coefficient of the train
A Building produce 400 V at 200 A. using individual photovoltaic cells that each produce 0.5 V at 1 A . Include a schematic diagram of your design idea. How many photovoltaic cells are needed for your design.
A three-phase induction motor operates at a slip of 3% and has a rotor copper loss of 300W. The rotational loss is 1500W. Determine (a) The air-gap power (b) The power output (c) If the rotor impedance is 0.2+j0.8 ohm/phase,
Given a two's complement, fixed point number with 8-bits of integer and 8-bits of fraction: A. What is the largest (most positive) number you can represent B. What is the most negative number you can represent
To understand dierent signal models To be able to model a discrete-time system and design simple signal processing algorithms.
Design a 1024x16 RAM using the 256x8 RAM blocks and neccessary combinational circuit. Note that, 256x8 RAM block has 8 bit data (DATA), 8 bit address (ADRS), chip select (CS), read/write (R/W) inputs and a three-state output bus.
Two thin rods of length L lie on the x axis. One of them has a charge of -Q uniformly distributed along its length and is positioned between x = -L and x = 0. The other one has a charge of +Q uniformly distributed along its length.
Explain in detail on the fabrication process of the FINFET. You must show a 3-dimensional view of FINFET and label the its L and W, the length and width of the gate.
A hydroelectric power plant has a synchronous generator who's speed must be fixed at 180 r/min. The turbine is Pelton type with 10 m runner diameter. When the flow rate at the nozzle of the penstock is 10m^3/s, the generated electricity.
A temperature of 200 oC is measured using a thermopile having three pairs of measuring junctions as shown in the figure below. The reference junction temperatures are set at room temperature of 25 oC.
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