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Hello! I'm studying for a Thermodynamics exam and I need to solve these problems in EES (Engineering Equation Solver). Below each question, there's my resolution. Can someone confirm if they are right?
1) The vapor quality of water, using u=2000 kJ/kg and s=6 kJ/kg×K (Steam_IAPWS tables)...
I'm studying for a Mechanics exam and I have a doubt on a 'Kinematics - Vector Derivative' exercise. I don't know how to begin and that's my main problem.
Well, this is the exercise:
Some data:
This mechanical system comprises:
- Body 1: A T-shaped arm, with mass 'm', that rotates around...
Consider that the curve C (IR3) is the intersection between x2+2z2=2 and y=1.
Calculate the line integral:
Note: The curve C is traversed one time in the counter-clockwise direction (seen from the origin of IR3).
My attempt:
Can someone check? Thanks! :)
If I don't put that VFC, I'll have 4 equations and just 3 unknowns. So, I don't know what's the extra unknown...
In the last equation, it's equal to 0. I forgot to write it.
1. The problem statement, all variables and given/known data
Consider this circuit. Calculate the complex power for the circuit, and correct the power factor to unity by connecting a parallel reactance to the load.
2. The attempt at a solution
My attempt:
Can someone check? Thanks a lot!
1. The problem statement, all variables and given/known data
Consider this AC circuit. Write the equations system to calculate the mesh I1, I2 and I3 (don't need to solve the system).
2. The attempt at a solution
My attempt:
Can someone check? Thanks!
1. The problem statement, all variables and given/known data
Consider this circuit. Find the Thévenin and Norton Equivalent Circuits (just need the 1st one).
2. The attempt at a solution
My attempt:
Can someone check? Thanks!
1. The problem statement, all variables and given/known data
Consider this AC circuit. Find i(t)
2. The attempt at a solution
My attempt:
Can someone check if it's correct? Thanks!
Re: Operational amplifiers and diodes
Thanks a lot! I understood the graphics really really well...
I have an additional question. Imagine they ask me in 2.) Diodes to find the Peak Inverse Voltage in diode D. Do you know how to calculate?
Thanks again!
Hi guys! I'm portuguese and I have an Electricity exam tomorrow. So this is really urgent. There are 2 kinds of exercises I don't know how to do. The tests usually have similar exercises to these ones:
1) Operational Amplifiers
Consider the circuit represented in this picture: . The voltage...
Hi guys! I'm portuguese and I have an Electricity exam tomorrow. So this is really urgent. There are 2 kinds of exercises I don't know how to do. The tests usually have similar exercises to these ones:
1) Operational Amplifiers
Consider the circuit represented in this picture: . The voltage...
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