# How do you find the maximum torque of a motor?

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Calculate torque (T) using the formula T = 5,252 x horsepower/rpm. The results are measured in pound-feet. For example, if you have a 40-horsepower motor designed to operate at a peak of 1,200 rpm, the formula would be T = (5,252 x 40)/1200 = 175.07 lb. -feet.

## What is the formula for maximum torque?

The expression for maximum torque can be obtained by substituting R 2 = s X 2 in the torque equation.

## What is the maximum torque on the motor?

Hence, the developed torque is maximum when the rotor resistance per phase is equal to the rotor reactance per phase under running conditions. By putting the value of sX20 = R2 in equation (1) we get the equation for maximum torque.

## What is maximum torque?

The primary use of torque is to make the car accelerate, and the number usually quoted is the maximum torque of the internal-combustion engine at the crankshaft – and that’s usually higher than the amount at the wheels. … But it’s not just about speed, torque is also important when vehicles get heavier and larger.

## How do you calculate torque on a 3 phase motor?

Torque of a three phase induction motor is proportional to flux per stator pole, rotor current and the power factor of the rotor. T ∝ ɸ I2 cosɸ2 OR T = k ɸ I2 cosɸ2 .

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## What is torque in AC motor?

Torque is the turning force through a radius – with the units Nm in the SI-system and the units lb ft in the imperial system. The torque developed by an asynchronous induction motor varies when the motor accelerates from zero to maximum operating speed.

## How do you calculate maximum torque of an induction motor?

So, when slip s = R2 / X2, the torque will be maximum and this slip is called maximum slip Sm and it is defined as the ratio of rotor resistance to that of rotor reactance. NOTE: At starting S = 1, so the maximum starting torque occur when rotor resistance is equal to rotor reactance.

## How do you calculate rpm torque?

When you choose torque, this calculator will measure the approximate torque of an engine based on the horsepower, multiplied by 5,252 (conversion between foot-pounds and horsepower), divided by the RPM of the engine. For example, if your engine has 350 horsepower then the torque would be 367 foot-pounds, at 5,000 RPM.

## How do you calculate motor torque in NM?

HP to torque (Nm) Calculation:

Torque T(Nm) in Newton meter (Nm) is equal to the 746 times of power P(HP) in horsepower divided by the 0.105 times of the motor speed N(rpm) in RPM. In another short word, 7127 times of horsepower divided by the motor speed is equal to motor torque.

## How do you calculate engine torque and RPM?

The equation to calculate horsepower is simple: Horsepower = Torque x RPM / 5,252.

## How do I calculate torque?

To calculate load torque, multiply the force (F) by the distance away from the rotational axis, which is the radius of the pulley (r). If the mass of the load (blue box) is 20 Newtons, and the radius of the pulley is 5 cm away, then the required torque for the application is 20 N x 0.05 m = 1 Nm.

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## What is meant by torque formula?

By definition, torque τ = r × F. Therefore, torque on a particle is equal to the first derivative of its angular momentum with respect to time.

## What is torque in dc motor?

Torque or moment or moment of force is the tendency of a force to rotate or move an object about an axis. A force is a push or pull, likewise, torque is a twist to an object. Mathematically, torque, T = F × r.