No item in cart
Thevenin’s theorem Network Theory | GATE Preparation Lectures | EC, EE, IN
Thevenin’s theorem: Thervenin’s theorem states that any two terminal, linear, bilateral network can be replaced by an equivalent circuits consisting of a voltage source and series resistor with it. Where equivalent voltage (Vth) is voltage across the open circuited terminal pair and equivalent resistant(Rth) is a resistance seen from open circuited terminal, when all the independent sources are replaced by their internal impedances.
1. Procedure to calculate Vth:
a. Identify the load and remove from the circuit.
b. After getting the open circuited terminal pair, calculate the potential across that by any method of analysis.
c. This open circuit voltage is Vth.
2. Rth calculation:
Case I: Network with no dependent sources:
a. Identify the load and remove from the network and get the open circuited terminal.
b. Replace all the independent sources by their internal impedances.
c. Calculate equivalent resistance across the open circuited terminal by using series/ Parallel/Star/delta simplification, that will be Rth .
d. Draw the equivalent circuit.
Case II: Network consist dependent and independent source together:
a. Identify the load and remove form the circuit.
b. Replace all the independent sources by their internal impedances
c. Apply a test source of ‘V’ and assume the current is ‘I’ outside from it.
Apply a test source of ‘I’ and assume the voltage is ‘V’ across it
d. Calculate ratio V/I . This will be Rth.
E Lectures helped me a lot in making a head start in the right direction. It helped whenever I got stuck in any topic. Mock Tests across 50 centers helped me judge my progress both on individual and comparative basis.
In one year’s time, I was able to prepare for GATE exam with the help of THE GATE ACADEMY and faculties. GATE Focused study materials and online mock tests helped me know my strengthen & weakness to prepare accordingly. I wish all the best to all GATE aspirants and suggest them to go through GATE coaching in case the basics are not clear.
I took up mechanical coaching at THE GATE ACADEMY as there is no separate coaching for Engineering Sciences in India and Mechanical and Engineering sciences have more or less common topics.I feared that cracking GATE would be very difficult because I started my preparations very late but the counsellors and teachers guided me
THE GATE Academy questions covered a wide variety of topics and were similar to GATE paper standard. The online platform replicated the actual GATE test environment and the detailed and video solutions were sufficient to clear all doubts regarding the question. Thanks to THE GATE Academy team to provide such wonderful tests & platform.
To begin with, it gives me immense pleasure to Thank,Thank the institute THE GATE ACADEMY for all their help and support.Its a place to learn, explore, grow and succeed.Well it helps you brush-up your engineering knowledge and learn new things and clears your concept in such great details
I am Praveen. I got AIR 1 in Instrumentation stream. I want to dedicate this to my parents and to the Gate Academy faculty. Gate Academy coaching helped me tremendously to update myself continuously.I was very impressed with the way they taught each topic in different sessions with separate material for each session.
GATE Success Story
- Our students get all India rank 1, 1, 1, 1, 4 and 4
- More than 142 students in top 100.