Quick Answer: What is motor output power?

In an electric motor, the mechanical power is defined as the speed times the torque. Mechanical power is typically defined as kilowatts (kW) or horsepower (hp) with one watt equaling one joule per second or one Newton-Meter per second.

What is input and output power of motor?

Input power [W] = Voltage [V] x Current [A] Mechanical output [W] = Rotating speed [rad/s] x Rotative force [Nm] (rad is called radian and Nm Newton meter) Motor efficiency refers to the fraction of mechanical output to input power as a percentage (%).

How do you calculate the power output of a motor?

By taking the voltage and multiplying it by the associated current, the power can be determined. 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.

What is output motor?

1. Something, such as a machine or an engine, that produces or imparts motion. 2. A device that converts any form of energy into mechanical energy, especially an internal-combustion engine or an arrangement of coils and magnets that converts electric current into mechanical power.

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How do you calculate power output?

Input and output power

  1. Electrical power is calculated by multiplying voltage (in volts) by current (in amps).
  2. If a transformer is 100% efficient, then the input power will equal the output power. …
  3. V P is input (primary) voltage.
  4. I p is input (primary) current.
  5. V s is output (secondary) voltage.

What is input and output power?

Input​ refers to the amount of energy put into a device, and ​ output​ refers to the amount of energy that comes out. A device may change the type of energy but not the amount. For example, a light bulb’s input energy is the form of electrical energy, and its output energy is in the form of light and heat. Efficiency.

Is a motor an input or output?


Output device Function Use
Motor Converts power into rotary motion that can turn a spindle linked to gears or wheels to make them move Cars and trains
Light-emitting diode (LED) A long-lasting, low-power light Torches, lamps and power indicators

What is output power?

Output power is the power supplied by the device.

What is the output of DC motor?

Typical DC motors may operate on as few as 1.5 Volts or up to 100 Volts or more. Roboticists often use motors that operate on 6, 12, or 24 volts because most robots are battery powered, and batteries are typically available with these values. Operating Current.

How do you find the wattage of a motor?


  1. The number of watts is equal to amps multiplied by volts. That’s it! …
  2. For example, if the current is 3 amps (3A) and the voltage is 110V, you multiply 3 by 110, to get 330W (watts). The formula is P=3A X 110V = 330 W (with P standing for power).
  3. This is why watts are sometimes called volt-amps.
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What is input power of motor?

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 the power output in horsepower of an electric motor?

One electric horsepower is equal to exactly 746 watts. The electric horsepower is a US customary and imperial unit of power. Electric horsepower can be abbreviated as hp(E); for example, 1 electric horsepower can be written as 1 hp(E).

How do you calculate motor power from RPM?

How to Calculate Motor RPM. To calculate RPM for an AC induction motor, you multiply the frequency in Hertz (Hz) by 60 — for the number of seconds in a minute — by two for the negative and positive pulses in a cycle. You then divide by the number of poles the motor has: (Hz x 60 x 2) / number of poles = no-load RPM.