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The heating time constant is the time that an induction motor takes to reach it's operational temperature.
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What is the KWh for 500 kw induction motor on idle running?
on idle, probably 0. KWh = KW x time (hours) . eg. 20KW for 5 hours = 100KWh (edit. ignore this answer i do not know what exactingly a idle motor is)
Your church organ bellows is powered by a repulsion start-induction motor It is arching quite a bit and does not start the first or sometimes the second time Could it be brushes or a dirty comutator?
"Induction" motors imply AC power Most AC motors do not have brushes or commutator If your motor does have brushes, a lot of sparking where the brushes meet the comutator is a good indication that it needs to be cleaned and/or "cutdown". If your motor does not have brushes, then you have more serious trouble. Need more details
Does the RPM of a motor vary if a load is added to the motor?
The speed of an electric motor is directly proportional to the frequency of supply. The rpm written on the name plate is the maximum operating speed for the motor design. Typically, for a squirrel cage induction motors, the speed is constant by design and this type of motor cannot operate for a long time at speeds below the rated value. It is true that loading affects motor speed to some extend but the electric motor will accelerate to the rated speed. If the loading is within the design parameters of the motor, the electric motor speed will not drop. What typically happens is that if the loading increases, the speed goes down, and the current increases. Because voltage is constant, this result in a high I2R loss in the windings and the motor circuit protection trips on thermal and electrical overload. The formula for electric motor speed is SRPM=(120f)/P. The above is for AC motors. If you are referring to a DC motor, what you have stated is correct. The motor will slow down as load is added. That is why you are not supposed to run many DC motors under no load conditions - they will overspeed.
Why is a three phase induction motor also known as a squirrel cage induction motor?
If you ever had a hamster as a kid, visualize the wheel that it used to exercise on. When the iron portion of the motor's rotor is removed this is the overall shape of the conductors embedded in the rotor. It is in this winding that the current is induced into. This in turn creates a magnetic field in the rotor that locks onto the revolving magnetic field in the stator. As for the terminology, a hamster cage induction motor does not convey the image of a motor that can do any heavy work. Its all about the spin, a squirrel is larger and stronger than a hamster and I guess that is about the largest caged animal that can use a wheel for exercising.Additional CommentAt the time when 'squirrel cage' motors were developed, people kept squirrels (rather than hamsters or gerbils) as pets.
What is a backward induction?
A backward induction is a process of reasoning backwards in time, from the end of a problem, in order to determine a sequence of actions to be taken.
Did Nikola Tesla get credit for the induction motor?
Yes, he did. There is one in the Smithsonian museum. Tesla's AC Induction Motor is one of the 10 greatest discoveries of all time. Another one of the original AC Tesla Induction Motors is on display in the British Science Museum in London.
Polarity of six terminal induction motor winding is decided at the time of connection of winding?
Is there a question here.
How fast can a dryer motor spin?
it depends on the type and model of dryer and also what type of motor is usedfor induction motor you can calculate the RPMA squirrel cage induction motor is a constant speed device. It cannot operate for any length of time at speeds below those shown on the nameplate without danger of burning out.To Calculate the speed of a induction motor, apply this formula:Srpm = 120 x FPSrpm = synchronous revolutions per minute.120 = constantF = supply frequency (in cycles/sec)P = number of motor winding polesExample: What is the synchronous of a motor having 4 poles connected to a 60 hz power supply?Srpm = 120 x FPSrpm = 120 x 604Srpm = 72004Srpm = 1800 rpmAbbas Khan Yousafzai
Why single phase induction motor taking more time for stop after disconnecting supply?
A motor runs on because of its inertia which causes it to run down until friction dissipates the kinetic energy of the rotor.
Where was thee electric motor invented in 1888 by Nikola Tesla?
Tesla's AC Induction Motor is one of the 10 greatest discoveries of all time. He had an experimental shop at 89 Liberty Street in New York.
What is induction time in paint?
The induction time is a period of time in which the freshly mixed material (paint) is allowed to stand before application
What can one do with a Kenwood food mixer?
With a Kenwood food mixer, one can stir and cook food at the same time. With its advanced Induction Heating technology, cooking and stirring are much more easier.
What is the KWh for 500 kw induction motor on idle running?
on idle, probably 0. KWh = KW x time (hours) . eg. 20KW for 5 hours = 100KWh (edit. ignore this answer i do not know what exactingly a idle motor is)
Why the second hand of a clock cannot travel at constant velocities?
It depends on the motor used to run the clock.An electric motor can drive the second hand at constant velocities. A mechanical motor has a little pendulum in it. It swings back and forth once per second, and every time it swings it moves the second hand.
What is induction time?
12 noon
What is a curve showing the relationship between temperature and time for a given amount of liquid heated at a constant rate?
The curve showing the relationship between temperature and time for a given amount of liquid heated at a constant rate is called a "heating curve." This curve is mapped out on a graph.
A curve showing the relationship between temperature and time for a given amount of liquid heated a constant rate is a what curve?
The curve showing the relationship between temperature and time for a given amount of liquid heated at a constant rate is called a "heating curve." This curve is mapped out on a graph.
