Conclusion. The concept of power is same in the context of mechanical as well as electrical engineering applications. The unit Kw is an electrical as well as mechanical power unit.
How do you calculate electrical power from mechanical power?
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 electrical power equal to?
Electric power is the rate at which energy is transferred to or from a part of an electric circuit. … For any circuit element, the power is equal to the voltage difference across the element multiplied by the current. By Ohm’s Law, V = IR, and so there are additional forms of the electric power formula for resistors.
What is mechanical power equal to?
Units. The dimension of power is energy divided by time. In the International System of Units (SI), the unit of power is the watt (W), which is equal to one joule per second. Other common and traditional measures are horsepower (hp), comparing to the power of a horse; one mechanical horsepower equals about 745.7 watts.
How can we write mechanical power in a manner similar to the electrical power?
Mechanical power is generated by mechanical equipment Eg. Pistons whereas electrical power is generated by alternators. The horsepower unit is used for mechanical power and can be converted to watts. Watts is used for electrical power.
What is voltage drop formula?
Voltage drop of the circuit conductors can be determined by multiplying the current of the circuit by the total resistance of the circuit conductors: VD = I x R.
What is the formula for calculating power?
Power is a measure of the amount of work that can be done in a given amount of time. Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s).
What are the types of electrical power?
Types of Electrical Power
- Apparent power: It is the ideal power and is represented by S. …
- Active power: It is the power which is dissipated in the circuit. …
- Reactive power: The power which is developed in the circuit is known as reactive power and is denoted by Q and measured in volt-ampere reactive.
What is the efficiency formula?
Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r=P/C, where P is the amount of useful output (“product”) produced per the amount C (“cost”) of resources consumed.
What is mechanical power input?
Mechanical power refers to the rate at which work can be done. It is a power output, as opposed to a power input (see Figure 1). The power input is referring to how fast the fuel’s energy is converted to power to use for the car.
What are the properties of mechanical power?
Mechanical power is defined as torque and RPM (rotation per minute) of Equations (3) and electric power is defined as current and voltage as Equations (7). Therefore, in order convert mechanical power into electric power, torque shall be converted into current and RPM shall be changed into voltage.
Is mechanical power a vector?
Related subjects: General Physics. In physics, mechanical work is the amount of energy transferred by a force. Like energy, it is a scalar quantity, with SI units of joules. … When the force does not lie along the same line as the motion, this can be generalized to the scalar product of force and displacement vectors.