For an electrically driven motor, the output power is mechanical while the input power is electrical, so the efficiency equation becomes efficiency = mechanical power/electrical input power.
What is input power?
Input power is the power that is fed into a machine, say for instance, Mechanical power input through a prime mover in case of alternators, or electrical input in case of motors. Now, Rated input power is the maximum input power that can be fed to the machine for safe operation.
How do you find the input power of a motor?
A watt (W) is a unit of power defined as one Joule per second. For a DC source the calculation is simply the voltage times the current: W = V x A. However, determining the power in watts for an AC source must include the power factor (PF), so W = V x A x PF for AC systems.
What is the input power of an induction motor?
1. For a single phase induction motor the input power is equal to ( current multiplied by voltage multiplied by the power factor) and this is the value which will be measured by a wattmeter. Note that it is not current multiplied by current as some people think.
What is maximum input power?
Maximum Input Power is defined as: The maximum amount of power (voltage given in Watts) that is able to be transmitted to a single antenna without damage to the antenna port from overloading. … It may be termed ‘power handling’ or designated as ‘Max.
What is input and output power?
Input power is the power consumed by a device. Output power is the power supplied by the device.
How do you find power?
Power is equal to work divided by time. In this example, P = 9000 J /60 s = 150 W . You can also use our power calculator to find work – simply insert the values of power and time.
What is induction motor and how it works?
✓ An induction motor (also known as an asynchronous motor) is a commonly used AC electric motor. ✓ In an induction motor, the electric current in the rotor needed to produce torque is obtained via. electromagnetic induction from the rotating magnetic field of the stator winding.
What is power flow diagram?
The power flow diagram shows the losses of the motor. The input and output of the motor are explained in the power flow diagram. Three-phase voltage and currents are used for the input power of the motor.