The higher the wind speed, the quicker a body cools. To quantify this wind speed chilling effect, both the U.S. and Canadian weather services have determined wind chill temperatures for temperatures below 50°F and wind speeds above 4 mph in the United States and temperatures below 10°C and wind speeds above 4.8 km/hr in Canada. An approximation of the official wind chill temperature, for both metric and English units, is given by this formula:
WCI = K1 + 0.6125 Ta -
K2Ws0.16 +
K3TaWs0.16
The following chart lists the correct dimensions and values for
both systems of units:
Symbol |
Meaning |
Metric Units (Canada) |
U.S. Customary Units |
WCI |
Wind chill index |
°C |
°F |
Ta |
Measured temperature |
°C |
°F |
Ws |
Wind speed |
km/hr |
mi/hr |
K1 |
Conversion factor |
13.12 |
35.74 |
K2 |
Conversion factor |
11.37 |
35.75 |
K3 |
Conversion factor |
0.3965 |
0.4275 |
Using the wind chill formula, write, compile, and run a C++ program that displays a table of wind chill indexes for temperatures from 2°C to 10°C, in 4-degree increments, and for each temperature, wind speeds from 5 km/hr to 11 km/hr in 2-km/hr increments.
In: Electrical Engineering
Draw the logic diagram for the function f=ΣA,B,C (2, 6, 7) using only AND, OR, and NOT gates.
Then draw logic schematic with only NAND gates, and appropriate resistors/LEDs to have LEDs to show the inputs and the outputs. You will need to swap out your AND, OR, and NOT gates as appropriate. You must show all gates, do not apply the involution theorem in the process. This means you will have more NAND gates than possible to implement with your equipment in this drawing. You will then make note (label) which NAND gates can cancel due to the involution theorem, this will allow you to make sure your circuit can be implemented with your equipment. You do not need to redraw your schematic after you document when you are applying the involution theorem
In: Electrical Engineering
Investigate why a EEG or ECG device with a common rejection system is convinient.
In: Electrical Engineering
You are designing a device for doctors and nurses to use in the Neonatal Intensive Care Unit (NICU) which can monitor the health of sick or premature babies. Name 5 physiologically relevant phenomena that doctors may wish to monitor and a corresponding sensor which can be a part of your device. How does this sensor work?
In: Electrical Engineering
Name a electrical device that can be both a conductor and insulator.
In: Electrical Engineering
What name is given to the device that drives a generator?
In: Electrical Engineering
HOW TO FIND FAULT IN UNDERGROUND CABLES
NAME ALL THE DEVICES
NAME ALL THE PROCESS
NAME ANY DEVICE THAT CAN BE EASILY MADE BY A STUDENT
In: Electrical Engineering
1. List any four types of faults that can occur in power transformers?
2. List any four effects of sustained low power factor on equipment.
3. List any four methods that can be used to improve power factor?
4. List any two economic benefits of power factor correction?
In: Electrical Engineering
Diesel Generator A I MVA diesel three-phase generator is rated at
4.16 kV, 60 Hz, and connected as Y its neutral is kept floating. It
is directly tied to three loads, one consuming 50% of its capacity,
and each of the other two consuming 25% of its capacity. A
three-phase to ground fault could occur at any of the loads. Draw a
one-line diagram of this system, then describe what type of faults
could occur in the generator and diesel engine. Explain at least
three types of protection strategies that have to be implemented in
such a system, and show necessary fault current calculations.
Assume that any fault impedance you may need is 9.02 pu, and any
component impedance is 0.4 pu.
In: Electrical Engineering
What are the types of hackings?
Please specify each types and explain in details of what it is
In: Electrical Engineering
In: Electrical Engineering
Translate the following real world scenario into a signal. Write mathematically. An IV drip is started on a patient of 1000mL saline over 8 hours. At time zero, a linearly increasing drip rate is started for 2 hours. The drip rate is then held constant for 4 hours. The last two hours the drip rate is linearly decreased to zero. Write an analytical expression of the signal in mL/hour.
This is for a signals and systems class. Some basic functions that could be used are u(t) and the delta function.
In: Electrical Engineering
Solve the differential equation using undetermined coefficients
y''+3y'-4y=5te^{t}+8t^{2}-4
In: Electrical Engineering
Parabolic trough collector. A set of parabolic mirrors can be used to concentrate the sun's rays to heat a fluid flowing in a pipe positioned at the mirrors' focal points. The heated fluid, such as oil, for example, is transported to a pressurized tank to be used to create steam to generate electricity or power an industrial process. Since the solar energy varies with time of day, time of year, cloudiness, humidity, etc., a control system has to be developed in order to maintain the fluid temperature constant. The temperature is mainly controlled by varying the amount of fluid flow through the pipes, but possibly also with a solar tracking mechanism that tilts the mirrors at appropriate angles.
Assuming fixed mirror angles, draw the functional block diagram of a system to maintain the fluid temperature a constant. The desired and actual fluid temperature difference is fed to a controller followed by an amplifier and signal conditioning circuit that varies the speed of a fluid circulating pump. Label the blocks and links of your diagram, indicating all the inputs to the system, including external disturbances such as solar variations, cloudiness, humidity, etc.
In: Electrical Engineering