Does the maximum power transfer condition states maximum efficiency condition?

Answer 1

Answer Pmax=E^2/(4xRs)

The maximum power is transferred when the load impedance is the complex conjugate of the source impedance. For a dc circuit or a purely resistive circuit, the load resistance equals the source resistance.

Answer 2

Maximum power transfer is used when designing a system with limited energy availability. When designing a short operating time motor that runs from a battery, maximum power transfer saves battery and motor costs. High currents are usually desired in this scenario, so, the battery's internal resistance becomes a significant part of the power delivery resistance. The maximum speed that the system can achieve will be at the maximum power transfer point. The motor can be thought of as a variable resistor (ie back EMF effect). When the motor's effective resistance equals the battery and wiring resistance then that is the maximum power operating point. However, if the motor's load is not correctly geared, maximum power cannot be achieved because the motor effective resistance will not match the battery and wiring resistance.

Answer 3

A dc source network can be represented as a voltage generator in series with an equivalent source resistance. The condition for maximum power transfer is that the load resistor is equal to the source resistance.

For an ac source of fixed frequency the same condition applies unless the source impedance has reactance as well as resistance. In that case the load has to be the complex conjugate of the source impedance, so if the source impedance is R+jX, the load has to be R-jX.

The maximum power condition is used in signal amplifier circuits or for sending power to or from a radio antenna. It does not apply to power supply circuits at 50 or 60 Hz because in that case the source impedance has to be as low as possible. The voltage remains nominally constant and each item of equipment draws as much current and power as needed for its operation.

Answer 4

for maximum power transfer the required condition is that the load connected should be equal to the thevenin equivalent of the circuit to which it is connected so that maximum power can be transferred to that load.

Answer 5

The exact condition for maximum power to be available at the load side is the equality of the resistances of both the load and the source part of the machine

Answer 6

For maximum power transfer the load resistance should be equal to the source resistance.

Answer 7

50%, with perfect impedance matching half the power is delivered to the load but half the power is dissipated in the source.

Answer 8

No. Maximum efficiency occurs when the iron and copper losses are equal.