What is the relationship between torque and current?

Mechanical or load torque is proportional to the product of force and distance. Motor current varies in relation to the amount of load torque applied. When a motor is running in steady state, the armature current is constant, and the electrical torque is equal and opposite of the mechanical torque.

What is full load torque of induction motor?

The Full-load Torque is the torque required to produce the rated power of an electrical motor at full-load speed.

What is the relationship between starting torque and full load torque of DOL starter?

When the induction motor is started with Direct ON Line starter and starting current is 6 times that of full load current, the starting torque is 1.44 times that of full load torque.

Is current proportional to torque?

The current in the output of a DC drive is the motor armature current, which is proportional to torque. There is an additional small converter to supply the field.

How do you calculate full load 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.

Does torque depend on current?

The increase in the torque on the motor shaft results in the linear increase in the armature current. The current function I, depending on the torque M, shows that more current flowing through the motor will produce a higher torque.

Why is torque directly proportional to current?

Torque=constant x flux x current. But flux is nearly constant in separately excited DC motor. Though due to armature reaction it will decrease slightly with load. Thus this makes torque directly proportional to armature current.

What is motor full load torque?

Full-load torque is the amount of turning force the motor produces at its operating speed in order to develop the rated horsepower.

What is torque induction?

An induction motor develops torque by inducing current to the rotor, which is proportional to the differential speed of the rotor and the rotating magnetic field in the stator. For NEMA design B motors the differential speed (called slip) is between 1\% and 2\% at full load.

What is full load torque?

Full load torque: the torque necessary to produce the rated horsepower at full load speed. In lb at 1 ft radius, it is equal to the horsepower x 5,250 divided by the full load speed.

What is the relation of current starting torque in starter?

What is the relation of the current with the starting torque in the starter concept? Explanation: The main function of the starter is to prevent excessive current flow. At the same time it should allow current to produce good or high starting torque.