0
What is relative permeability of Mild steel angles or rails when used as busbars for EOT cranes?
Wiki User
∙ 14y ago
Cast Iron 100 -150 Mild Steel 200 - 800 Silicon Iron 1000 - 5000 Cast Steel 300 - 900
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What are the advantages of a fast slew rate?
It can depend on what you are slewing. Generally faster slewing means faster loading or unloading. E.g. if you are operating an excavator if the excavator can slew faster from you digging position to your loading position less time is needed to load a truck hence productivity is increased and cost reduced. For cranes it is a similar principle
Which jobs use electromagnets?
Probably the most important use is in the electric generator. They are used in metal detectors, and speakers. In generators they are used to generate a constant charge. In metal detectors they are used as a sensor; where the field is changed by metals in the ground. And in speakers they are used in a to and fro motion on a diaphragm to make sound.
How a slip ring motor work?
The stator coil is exactly the same as a 3 phase induction motor. The difference being the rotar which has 3 phase wiring in star point or delta connection and also has the sliprings connected to the wiring of the rotor. Brushes are use for the contact between the surpply and the rotor. By controling the current we can control the torgue and speed of the motor. This is done with resistance. Resistance can be greated by means of a resistance bank, liquid resistance or a variable resistance. The basic Idee is: The higher the resistance, low starting current, high torque, high % slip. Motor runs slowlyLow resistance , Higher starting current, lower torgue, lower % slip Motor runs faster.Thus by varing the rotor resistance the motor can be adapted for a spesific load.The motor Are mainly used for Overhead cranes, Elevators in buldings, Pumps under pressure and large fans
What are some of the applications of shunt motors?
1. D.C Shunt Motors:It is a constant speed motor.Where the speed is required to remain almost constant from noload to full load.Where the load has to be driven at a number of speeds and any one of which is nearly constant. Industrial use: Lathes Drills Boring mills Shapers Spinning and Weaving machines. 2. D.CSeries motor: It is a variable speed motor.The speed is low at high torque.At light or no load ,the motor speed attains dangerously high speed.The motor has a high starting torque.(elevators,electric traction) Industrial Uses: Electric traction Cranes Elevators Air compressor Vacuum cleaner Hair drier Sewing machine 3. D.C Compound motor: Differential compound motors are rarely used because of its poor torque characteristics. Industrial uses: PressesShears Reciprocating machine.
How many Slip rings in synchronous motor?
If the synchronous motor is single phase then there are two slip rings & if this motor is three phase so the slip rings are three in number. Correction; I have never seen a single phase synchronous motor. It would cost more that it was worth. A synchronous motor has a separately excited field. If the excitation comes from a stationary DC source it has 2 slip (collector) rings. A brushless induction motor has no slip rings because the exciter armature rotates and so do the rectifiers. A permanent magnet motor, used with variable frequency drives, is another type of synchronous motor that has no slip rings. A three phase motor with 3 slip rings is a Wound Rotor motor. Wound rotor motors are variable speed motors that were used for such applications as bridges and cranes before variable speed drives.
What are the different types of cranes?
There are... -Gantry Cranes -Stacker Cranes -Floating Cranes
How do cranes repouduce?
how do cranes repouduce
Where does the cranes get there foods?
yes cranes do hunt
What is the name of a Short story about whooping cranes?
The Cranes by Peter Meinke
How do you think of the automation of industrial cranes?
The rapid expansion of the hoisting industry promotes the application of automation products. Although the employ of the automation is still at a relative low level, the crane manufactures and the users realize that the merits of using automation products stage by stage. Cranes of industrial-crane.com is of good quality.
When was The Cranes Are Flying created?
The Cranes Are Flying was created on 1960-03-21.
What kind of cranes migrate to Alaska?
sand hill cranes
What does the word paper cranes mean?
cranes made of paper
When was The Paper Cranes created?
The Paper Cranes was created in 2005.
What is Manitowoc Cranes's population?
The population of Manitowoc Cranes is 7,500.
How many cranes did it take to build the confederation bridge?
24 cranes
What type of cranes are not covered by BS 7121?
Rail mounted cranes
