Rolling mill requires high power motor generally dc motor and slip ring induction motor of multi-kilowatt (above 100 H.P motor) is preferred.
Which are best for the rolling mills?
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Which type of drive can be used for hoisting machinery?
Ward Leonard system is commonly employed for elevators, hoists, and main drive in steel mills, as this method can give unlimited speed control in either direction. Since the generator voltage can be varied gradually from zero, no extra starting equipment is required to start up the main motor smoothly.
Which of following motor is preferred for belt conveyor?
AC induction motors are ideal for conveyor systems that operate continuously in one direction.
For which of the following application DC motor are still preferred?
Why are the DC motors preferred for traction applications? 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.
Which motor is used in rolling mill?
1. DC Series Motor. Since it has high starting torque and variable speed, it is used for heavy duty applications such as electric locomotives, steel rolling mills, hoists, lifts and cranes.
Which of the following motors is used for rolling mills?
Slip-ring induction motor.
Which type of drive is used for textile industry?
Applications of Industrial Drives > ROLLING MILL DRIVES: The following types of drives are used for rolling mills: (i) DC motors, (ii) AC slip ring motors with speed control. The DC motors, because, of their inherent characteristics, are best suited for the rolling mills.
Which motor is used in tramways?
The DC motor was the mainstay of electric traction drives on electric and diesel-electric locomotives, street-cars/trams and diesel electric drilling rigs for many years. It consists of two parts, a rotating armature and fixed field windings surrounding the rotating armature mounted around a shaft.
Which motor is used in textile industry?
Three Phase AC Torque Motor for Textile Industries, 0.25 To 15 Hp
|Power||0.25 to 15 Hp|
|Motor Voltage||415 V|
Which motor is preferred for Blowers?
For blower applications, the most common motors are 2-pole (3600 rpm), 4 poles (1800 rpm), and 6-pole (1200 rpm). The most preferred motor for the blower is squirrel cage induction motor, synchronous motor, DC shunt Motor, Split-phase motor. Less than running torque.
Which motor is preferred for synthetic Fibre Mills?
Ques 55. Which of the following motor is preferred for synthetic fiber mills? The reluctance motor, also called a reluctance-synchronous motor, is an induction motor with a modified squirrel cage rotor such as those shown in Figure The notches, flats or barrier slots provide equally spaced areas of high reluctance.
Which motor has the poorest speed control?
Which of the following DC motor has the poorest speed control? Explanation: DC series motor at no load condition gives infinite speed ideally. Practically it will damage all the armature circuit.
Which DC motor is used for conveyor?
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.
What are the application of DC generator?
Applications of DC Generators
These generators are used to charge batteries, provide lighting and provide excitation to alternators. They are used to provide field excitation current for regenerative braking in DC locomotives. They are used in DC motors where speed control is necessary.
Why is the DC motor preferred over AC motor?
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.