# How to calculate the power of a tree? ### How to calculate the power of a tree?

The Powerful nominal or Powerful useful is the one found on the motor nameplate. It corresponds to the Powerful coming out of thetree and which is delivered to the driven machine. We have it calculated by multiplying the Powerful absorbed by performance.

### How to calculate the mechanical power of a motor?

If you know the plan motor as well as Powerful in horsepower, you can also use the following formula: Torque motor (Nm) = (Powerful (hp) x 7000) / RPM (rpm). The formula for calculate power from motor is therefore : Powerful (hp) = Torque motor (Nm) x Speed ​​(rpm) / 7000.

### How to calculate the power absorbed by a motor?

We use the formula I=P/U.

### How to calculate the useful power in Watt?

Power calculation in watt the power calculation electricity is now very simple: you just need to multiply the intensity by the voltage: Formula of power calculation in watt : W = A x V.

### How to calculate the useful power with the efficiency?

For calculate the yield of a motor, it is necessary to divide the power by the Powerful absorbed. In this case, the useful power corresponds to the Powerful electric coming out of the motor. For its part, the Powerful absorbed represents the Powerful electricity that enters in engine. Let R = (Pu/Pa).

### How to calculate the size of a tree?

measure a tree (or other vertical element) Measure the length of his arm (B) between the eye and the fist. Use a stick whose length is equal to (B). Approach or retreat fromtree so as to make the top of thetree with the top of the stick and the bottom of thetree with the bottom of the stick.

### How to calculate the mechanical power of an electric motor?

The Powerful of one motor refers to energy mechanical which he deploys. It is measured by multiplying its rotational speed (in rad/s) by its torque (in Newton meters).

### How to calculate the value of the mechanical power?

The mechanical power (P): P = because L/t expresses the speed (in m/s).

### How to build a tree with the smallest possible diameter?

Goal – most economical and safest possible construction → smallest possible shaft diameter. The dimensioning factor of a tree is one of the following 3 elements: – Resistance (in fatigue or ultimate) – Rigidity (to reduce the deflection) – Stability (increase the critical speed – dealt with in part II)

### How to calculate the strength of a tree?

We often choose R=50 MPa as a starting point. Mf=√MfV 2+Mf H 2 Mt= P ω Mt=F⋅D/2F=T−t F=Ft Mi=√Mf2+Mt2Mi=√Mf2+3/4Mt π Mi R 36 Mechanical design Shaft sizing On then obtains a SER, Solid of Equal Resistance, of variable diameter along the shaft.

### How to size a tree?

Shaft sizing We then obtain an RES, Solid of Equal Resistance, of variable diameter along the shaft. This SER is the core on which will be grafted the connecting elements to the wheels, pulleys, cylindrical or conical bearing surfaces imposed by the bearings, etc. You have to add a cover…

### What are the dimensioning factors of a tree?

The dimensioning factor of a tree is one of the following 3 elements: – Resistance (in fatigue or ultimate) – Rigidity (to reduce the deflection) – Stability (increase the critical speed – dealt with in part II)