Engineering
Engineering, 25.02.2020 02:54, kittycat92

Suppose you want to find the difference of two sinusoidal currents, given as follows: i1(t)=I1 cos(ωt+ϕ1) and i2(t)=I2 cos(ωt+ϕ2).i1(t)=I1 cos(ωt+ϕ1) and i2(t)=I2 cos(ωt+ϕ2). If you stay in the time domain, you will have to use trigonometric identities to perform the subtraction. But if you transform to the frequency domain, you can simply subtract the phasors I1I1 and I2I2 as complex numbers using your calculator. Make sure that all of your time-domain currents are represented using the cosine function before you apply the phasor transform. Your answer will be a phasor, so you will need to inverse phasor-transform it to get the answer in the time domain. This is an example of a problem that is easier to solve in the frequency domain than in the time domain. Use phasor techniques to find an expression for i(t)i(t) expressed as a single cosine function, where i(t)=[250cos(377t+30∘)−150sin(377t+ 140∘)] mAi(t)=[250cos⁡(377t+30∘)−150sin⁡(3 77t+140∘)] mA. Enter your expression using the cosine function. Round real numbers using two digits after the decimal point.

answer
Answers: 3

Other questions on the subject: Engineering

image
Engineering, 03.07.2019 15:10, brooklyn674
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
image
Engineering, 04.07.2019 18:10, ayoismeisjjjjuan
Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges
Answers: 1
image
Engineering, 04.07.2019 18:20, AnonymousLizard52303
A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.
Answers: 3
image
Engineering, 04.07.2019 19:10, rayne40
A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?
Answers: 3
Do you know the correct answer?
Suppose you want to find the difference of two sinusoidal currents, given as follows: i1(t)=I1 cos(ω...

Questions in other subjects: