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What will happen to speed-torque characteristics of an induction motor is the rotor resistance is increased?
Wiki User
∙ 12y ago
If Rotor resistance is increased torque is increased
Wiki User
∙ 12y ago
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When the length of air gap is increased in an induction motor what will also increase?
Power factor reduces overload capacity increased noise reduces
How do you increase starting torque in cage type 3-phase induction motor's?
by adding external resistance to the shaft of rotor
What should the value of the resistance box for a 5 hp slipring induction motor?
its depends upon rotor voltage and current
What is induction heating?
Induction heating is the process of heating an electrically conducting object (usually a metal) by electromagnetic induction, where eddy currents are generated within the metal and resistance leads to Joule heating of the metal.induction heater including high frequency induction heating machine and middle frequencey heating machine. Induction heating applications for an induction furnace include induction welding, induction brazing, induction hardening, induction melting, quenching, forging, soldening, induction annealing and other forms of heat treatment. Induction heating is often used to heat graphite crucibles (containing other materials) and is used extensively in the semiconductor industry for the heating of silicon and other semiconductors. Induction heating can produce high power densities which allow short interaction times to reach the required temperature. That translates into lots of energy transferred into a material right now, with a very rapid rise in temperature.
What is the advantage of the capacitor-start induction-run motor over the resistance-start induction-run motor?
A capacitor-start system will limit the current drawn by an induction machine by correcting the devices poor power factor during the start up. This limits the current needed to start the device without using any real power. A resistance-start system will limit the starting current by drawing current unto the resistor instead of the induction machine. The real power used by the resistor is turned into heat and lost. A capacitive-start system will use no real power and will not create excess heat, it will be more expensive to initially purchase.
Voltage is divided by?
The most common equation involving voltage is Ohm's Law, which, when provided with two of Voltage, Induction or Resistance, can produce the third value. In short, voltage is calculated by multiplying induction (amperage) by resistance. Conversely, dividing voltage by induction results in resistance, and dividing voltage by resistance results in induction. More information on Ohm's Law is available at https://en.wikipedia.org/wiki/Ohm%27s_law, and http://www.csgnetwork.com/ohmslaw.html has utilities (scripting must be enabled) to automatically do the "work" for you.
Why are the ac series motors preferred for electric traction?
ac motor is nothing but induction motor.So check out for characteristics of induction motors.
What are the reasons for connecting resistance in the rotor circuit when starting wound rotor induction motors?
To limit the starting current in slip ring induction motors.
Why speed of the induction motor falls when load is increased?
As the load increases, the speed reduces to deliver the increased torque required.
When the length of air gap is increased in an induction motor what will also increase?
Power factor reduces overload capacity increased noise reduces
Why using on motor star delta starter?
because at the starting the induction motor drawn a heavy current thats why we use starter to increase the starting resistance of the induction motor!
What are the different types of induction motors?
DOL(Direct Online starting) Star Delta starting Auto transformer starting Above methods are for squirrel cage induction motor Rotor resistance starting is used for wound rotor or slip ring induction motor
How do you increase starting torque in cage type 3-phase induction motor's?
by adding external resistance to the shaft of rotor
What should the value of the resistance box for a 5 hp slipring induction motor?
its depends upon rotor voltage and current
What has the author Aroon Yusuf written?
Aroon Yusuf has written: 'Induction of resistance to the mitoinhibitory effects of orotic acid during hepatocarcinogenesis'
What is induction heating?
Induction heating is the process of heating an electrically conducting object (usually a metal) by electromagnetic induction, where eddy currents are generated within the metal and resistance leads to Joule heating of the metal.induction heater including high frequency induction heating machine and middle frequencey heating machine. Induction heating applications for an induction furnace include induction welding, induction brazing, induction hardening, induction melting, quenching, forging, soldening, induction annealing and other forms of heat treatment. Induction heating is often used to heat graphite crucibles (containing other materials) and is used extensively in the semiconductor industry for the heating of silicon and other semiconductors. Induction heating can produce high power densities which allow short interaction times to reach the required temperature. That translates into lots of energy transferred into a material right now, with a very rapid rise in temperature.
What are some characteristics of induction?
Induction involves inferring a general principle from specific observations or instances. It is based on the assumption that what has happened in the past will continue to happen in the future. Inductive reasoning can provide strong evidence for a hypothesis, but it does not guarantee the conclusion as true.
