Slip ring induction motor has high starting torque. Because slip ring is connected through the resistance. When the supply is on the resistance is increases the phase difference is decrease due to this starting torque is increases.
Which type of induction motor has high starting torque?
Why Slip ring Induction motor is preferred for High starting Torque application.
Which motor has the highest starting torque?
Best DC motors for high starting torque?
- Shunt wound DC motors are used in applications where the required starting torque is low, but good speed regulation is important. …
- Series wound DC motors are best for applications that require high startup torque, without the need for speed regulation.
Which AC motor produces high starting torque?
Compared to the shaded pole motor, these motors provide much greater starting torque. A split-phase motor has a secondary startup winding that is 90 electrical degrees to the main winding, always centered directly between the poles of the main winding, and connected to the main winding by a set of electrical contacts.
When the starting torque of an induction motor is maximum?
Ques 82. The starting torque of an induction motor is maximum when rotor resistance per phase is …………… rotor reactance/phase. Maximum starting torque is obtained when the slip is equal to the ratio between the rotor resistance (R2) and the rotor inductive reactance (X2).
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 low starting torque?
The starting torque of the motor is given by, … At start, the rotor reactance is large because slip of the motor at start is equal to unity. The large rotor reactance at start makes the starting torque of the motor poor. The motor draws about 5 to 6 times current of its full load current and produce very less torque.
What is full load torque?
The full load torque of a motor is the maximum torque that the motor can deliver when it is fully loaded. Here is a simple motor torque calculator that can help you calculate the full load torque of a motor.
Why do DC motors 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. Depending on the configuration of the coil connection (series versus parallel), different performance across load value for DC motors can be obtained.
Which type of starter motor generates the highest torque at low rpm?
Excellent torque characteristics at low speeds
Stepper motors have maximum torque at low speeds (less than 2000 rpm), making them suitable for applications that need low speed with high precision.
What happens if fifth harmonics is given to induction motor?
What happens if fifth multiples of harmonics is given to induction motor? It will rotates in reverse direction.