Thus, DC series motor is used in conveyors as it provides very high starting torque, which is practically 5 times the rated torque.
Which DC motor is used for conveyors?
ElectroCraft’s brush or brushless DC motors and gearmotors provide the power, durability and compact size that is required for distributed control of motorized conveyor sections and diverter systems.
Which of the following DC motor can be used at conveyors Mcq?
Which of the following DC motor can be used at conveyors? Explanation: A conveyor requires high torque with steady speed, which provided by DC series motor.
Which of the following application dc series motor is used?
In which of the following applications DC series motor is used? Explanation: In DC series motor Torque (Ta) increases as the Square of armature current (Ia) Ta ∝ Ia2. So DC motor provides high starting torque which is required to start a car.
Which of the following DC motors is suitable for high starting torque?
Series wound DC motors are best for applications that require high startup torque, without the need for speed regulation. Like a shunt motor, as a load is applied to a DC series motor, the motor speed decreases, which reduces the back EMF and increases the net voltage.
What are the 3 types of DC motors?
Main Types of DC Motors
- Permanent Magnet DC Motors. The permanent magnet motor uses a permanent magnet to create field flux. …
- Series DC Motors. In a series DC motor, the field is wound with a few turns of a large wire carrying the full armature current. …
- Shunt DC Motors. …
- Compound DC Motors.
Which is best AC or DC motor?
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.
What is the need of 3 point starter?
A three-point starter is an electrical device, used for starting as well as maintaining the DC shunt motor speed. The connection of resistance in this circuit is in series which decreases the initial high current and guards the equipment against any electrical failures.
Which motor is used in high speed application?
Special electric motorsHigh speed electric motor
We have a wide range of elelctric motor offerings for various high speed applications by induction motors and PM motors. Rated voltages are 200 V class and 400 V class. It is an AC-driven motor. It is a special application motor.
Which DC motor has maximum self loading property?
Which DC motor has got maximum self-loading property? Explanation: A differentially compound DC motor, flux reduces so sharply at small increase in load at higher values of load.
What is a series dc motor?
Series DC motors are a group of self-excited DC motors in which the field coil is connected in series to the armature winding and thus a higher current passes through it. A series DC motor mission is to turn the electrical energy into mechanical one based on electromagnetic law.
What is back emf in dc motor?
When the armature of the DC motor rotates under the influence of driving torque, the armature of the conductors moves through a magnetic field inducing an emf in them. The induced emf is in the opposite direction to the applied voltage and is known as the back emf.
What are the materials used for brushes in DC machines?
Metal Graphite Brushes are generally made from natural graphite and finely divided metal powders. Copper is the most common metallic constituent but silver, tin, lead and other metals are sometimes used. These brushes are often ideal for a wide variety of applications because of their low resistivity.
Which DC motor has high torque?
DC motor has high starting torque.In a series motor the same current flows through the armature and the field winding. The torque is therefore proportional to the square of the current. The current is set by the supply voltage and the back-emf generated in the armature.
Which motor has high starting current?
The induction motor draws a high starting current as compared to the running condition. The starting current of the induction motor is about 5 or 6 times the motor full load current.
Which motor is used in traction?
Explanation: DC motors are used for traction as, according to the characteristics of DC motors speed is inversely proportional to torque and square of armature current as well, if linear magnetization is concerned. Thus, DC motors are perfectly suitable for traction.