## What determines the torque of a DC motor?

DC motors are relatively simple machines: when the load on the motor is constant, speed is proportional to supply voltage. And when supply voltage is constant, speed is inversely proportional to the load on the motor. Therefore, when supply voltage (V) is constant, torque (T) is inversely proportional to speed (ω).

### Does DC motor have more torque?

DC motors can provide a more constant torque over the speed range, and generally provide faster response to load changes that AC motors. Brushless DC motors are more efficient than those with brushes, but the efficiency gains are primarily at the low-load or no-load areas of the motor performance curve.

#### Why is torque important in DC motors?

Torque can be defined as a turning force that tends to produce rotation on a shaft. The primary advantage of the DC motor is that it can develop constant torque over a wide speed application. Power supply is an important consideration in the application of DC motors.

**What is the relationship between a DC motor speed and its torque?**

Torque is inversely proportional to speed. Thus, when speed increases, torque will decrease.

**Which is proportional to the torque in DC motor?**

For DC Machine, torque is directly proportional to armature current and flux. In dc shunt motors, flux is constant (not dependent on armature current). Hence torque is proportional to armature current.

## How do you increase the torque of a DC motor?

If you want to adjust the output torque within the rated torque range, you can usually adjust the input voltage or the amount of excitation current. If the DC motor has been set, the torque can only be increased by the speed reducer, which can be multiplied or even increased by a thousand times.

### Which motor is more powerful AC or DC?

AC motors are generally considered to be more powerful than DC motors because they can generate higher torque by using a more powerful current. However, DC motors are typically more efficient and make better use of their input energy.

#### Which is proportional to the torque in dc motor?

**Is torque directly proportional to RPM?**

Horsepower = Torque x Engine RPM/5252 The level of horsepower an engine can deliver is directly proportional to the level of torque generated by the crankshaft, which is directly proportional to the total displacement capacity of the engine.

**What is dynamic braking in DC motor?**

rheostatic braking

Dynamic braking, also called rheostatic braking, allows you to break a motor by reversing the torque’s direction. With your brake, you essentially disconnect your running motor from its power source. Your motor’s rotor will then begin to rotate due to inactivity, thus functioning as a generator.

## What is the torque of 12v DC motor?

Related Items

Voltage | Product # | Torque (in-lb) |
---|---|---|

12 | 10312 | 32.30 |

12 | 10313 | 12.60 |

12 | 10314 | 31.10 |

12 | 10315 | 40.70 |

### How do you control the torque of a DC motor?

To control DC motors torque, a DC drive will regulate armature current. The armature voltage is unregulated allowing the motor to operate at whatever speed is necessary to achieve the set current /torque level.

#### Where does the torque come from in a DC motor?

We do not get the entire armature torque on the shaft as output mechanical torque of the dc motor. Because, a small percentage of armature torque has to supply the iron loss, frictional and windage losses of the machine. After these losses, whatever torque available at the shaft of the machine does the useful work as output.

**How are voltage and torque related to motor speed?**

In summary, we can highlight the two main variables which affect the speed of the motor in our final equation: Input Voltage: For a fixed load, the speed of the motor is affected by applied voltage. Increase in voltage = increase in speed. Load Torque: For a fixed voltage, the speed of the motor is inversely affected by the load.

**What is the advance angle of a brushless DC motor?**

In the design of the control scheme for a brushless DC machine, an important consideration is the advance angle . This is the angle (in electrical degrees) between the rotating magnetic field caused by the sinusoidal excitation of the stator windings and the rotating magnetic field due to the permanent magnets on the rotor.

## What is the value of the torque angle?

The value of the torque angle depends on the amount of load to be met by the motor. In other words, the torque developed by the motor depends on torque angle. Now we will see what the Power or Load angle is? Well, the power or load angle is defined for Synchronous Machine and also for Transmission Lines.