Hi everyone.
What is the metal thing on the top of the testing transformer (figure below)? It looks like electrode, but what is the use? I find it ubiquitous in many HV equipments.
I want to understand the conductivity of ZnO. I know it is non-linear (that's why it is used in surge arrester to begin with), but can anyone enlighten me on why it is non-linear? Is it the function of electric field, current, or anything? I'd appreciate if you can provide the expression of...
Yes I understand the definition of reactive power. It is the power that flows back and forth on transmission lines and does not do work(correct me). My question is, is reactive power useful? In what case reactive power has to be minimized as low as possible? I read an article about the...
A solenoid has a radius R, length L, with N turns and carrying a current I. If a cylindrical rod with permeability μ and radius R/2 is inserted inside the solenoid, what is the inductance of solenoid?
Homework Statement
I am totally new to MATLAB. My lecturer wasn't aware of that and just gave us an assignment about explaining the phenomena Hartley Receiver using Simulink.Homework Equations
The diagram is attached as first picture.
Using Simulink, prove that the image signal is alleviated at...
I knew the role of emitter resistor is to stabilize Q-point.
As far as I concern, the voltage gain of CC should approximately equal to 1, after all CC is just used as buffer, we don't want so much gain. Is it possible it is less than 1, like you said?
Normally in common collector amplifier, Rc (collector resistor) is absent or otherwise it is short circuited by capacitor.
My question is: If Rc is present and not short circuited, does it affect the voltage gain? If it does, how it affects? Appreciate if someone can present clearly in...