Maximum Power Transfer theorem for DC excitation
Statement
A linear DC network having a resistive load connected receives maximum power when the load resistance is
Showing posts with label equivalent circuit. Show all posts
Showing posts with label equivalent circuit. Show all posts
Maximum Power Transfer theorem
Labels:
circuits,
equivalent circuit,
network theory
Millman’s Theorem
Millman’s Theorem statement
The millman’s theorem states that, when a circuit has n number of voltage sources such as V1, V2, V3⋅⋅⋅⋅⋅⋅⋅Vn along with their internal resistances R1, R2, R3, ⋅⋅⋅⋅⋅⋅⋅Rn respectively are connected in parallel as shown in the below figure, then the circuit can be replaced by a single
Resistors in series
When resistors are connected in series, the amount of the current passing through
all the resistors will be same but the voltage drops across the resistors may vary. For
series connected resistors their resistance adds up. Their equivalent
resistance is equal to the sum of all the resistors in series. Thus for a
series connection, equivalent resistance increases with increase in number of
resistors.
Consider
the following circuit of three resistors
Resistors in parallel
When resistors are connected in parallel, the amount of the voltage
drop across all the resistors is same but the current passing though the
resistors varies depending on their resistance values. For parallel connected
resistors the equivalent resistance is equal to inverse of the sum of inverse
resistances in parallel. Thus for a parallel connection of resistors,
equivalent resistance decreases with increase in number of resistors in
parallel.
Consider
the following
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circuits,
electrical,
electrical circuits,
equivalent circuit,
equivalent resistance,
network theory,
Resistance
Transformer
Transformer is a static device or a machine that transfers electrical energy from one electrical circuit to another through medium of magnetic field without change in frequency. It is an electromagnetic energy conversion device and can raise or lower the voltage with a corresponding decrease or increase in current. A transformer consists of two conducting coils (or windings) having a mutual inductance. These coils are wound on a laminated core made of high permeability magnetic material. The coil which receives electrical energy from supply terminals is called
Labels:
electric transformer,
electrical,
equivalent circuit,
losses,
operation,
transformer,
what is,
working
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