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 the formula for power rating?
What is the maximum power rating in watts of a fixed resistor which has a voltage of 12 volts across its terminals and a current of 50 milliamperes flowing through it. Given that we know the values of the voltage and current above, we can substitute these values into the following equation: P = V*I.
What is the rated power of a motor?
Electrical motors are rated in horsepower or watt
The old imperial unit horsepower is equal to 746 watts (0.745 kW) or 33000 lb ft per minute (or 550 lb ft per second). The unit of electric power – 1 watt – is equal to the power produced by an electrical current of 1 amp at a potential difference of 1 volt.
What is rated output power?
rated output power: That power available at a specified output of a device under specified conditions of operation. (188) Note: Rated output power may be further described; e.g., maximum rated output power, average rated output power.
What is work formula?
Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m). One joule equals the amount of work that is done when 1 N of force moves an object over a distance of 1 m.
What is short time rating of motor?
A short time rating of an electric motor can be defined as the extrapolated overload rating of the motor which it can supply for the specified short time without getting overheated. Now a days the machines are being designed and manufactured for short duration having sufficient overload torque capability.
What is kW rating of motor?
Three Phase Motors
|MOTOR RATING||HP||APPROX. F.L.C. AT LINE VOLTAGE|
How many watts is a 1 hp motor?
One electric horsepower is equal to exactly 746 watts.
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. Maximum Input Power is a key parameter commonly seen on antenna specifications and datasheets.
What is rated power input?
Now, Rated input power is the maximum input power that can be fed to the machine for safe operation. Similarly Rated output power is the max power the machine can deliver under normal circumstances. … Rated Power is the power, which is written on the electrical or electronics appliance. It is the Input Power.
What is maximum output current?
The rated output current is the maximum load current that a power supply can provide at a specified ambient temperature. … The maximum current is usually determined by the design, components and target load.
What is D work formula?
Mathematically, work can be expressed by the following equation. W = F • d • cos Θ where F is the force, d is the displacement, and the angle (theta) is defined as the angle between the force and the displacement vector.
What is D in work done formula?
Formula of Work
d is the displacement. θ is the angle between force and direction of motion.
Who gave the formula of work?
Units. The SI unit of work is the joule (J), named after the 19th-century English physicist James Prescott Joule, which is defined as the work required to exert a force of one newton through a displacement of one metre.