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Does a title identify the data series or bars in a column chart?
No. A title is for the overall chart. A legend will identify the bars and series on it.
How to limit starting current of induction motor while designing it?
Traditionally there are two methods to limit starting current at the design stage:Increase the rotor resistance by using smaller section of rotor bars. No. of bars can also be reduced but this will hamper smooth rotation of the motor.Use deep rotor bars or double cage rotor. Both the methods are functionally same but constructionally double cage is more complicated.
What is construction of cage induction motor?
The rotor is manufactured from a stack of circular silicon-steel lamination clamped together around a shaft, with open or closed slots running along the length of the rotor through which the rotor conductors ('bars') pass. The rotors are then interconnected at opposite ends with conducting end-rings. In some cases, the rotor bars are poured into the (enclosed) slots as molten metal. If the bars were visible, they would resemble a gerbil's exercise wheel.
What is double cage rotor and deep bar cage rotor?
deep bars in the rotor that result in higher rotor resistance at low speeds thus resulting in larger starting torques. The higher resistance is due to the skin effect.
What width is to narrow for a worn brake disc?
There is a engraved number on the outer rim of the rotor. This will be where the rotor is the largest in diameter. It will be hard to read if the rotor is rusty. This number is the minimum recommended thickness. You may have to use a dial caliper to accurately measure the rotor.
What is the name principle of 3 phase induction motor?
Transformer action. There is no electrical connection between the stator and the rotor, and voltages get induced into the rotor bars when they are swept by lines of magnetic flux created by the stator windings.
What is a bike rotor?
If it's a disc brake bike, then Rotor is another name for the brake disc. If it's a BMX rotor may be another name for gyro / detangler - the thingy that lets you spin the bars on a brake-equipped bike w/o making a mess of the brake wires.
Identify four common disc brake problems.?
A warped rotor causing a pulsating brake pedal is probably number one on the list.In my neck of the woods, rust is another issue. Even with daily usage the rust builds up on the braking surface of the rotor again causing a pulsation in the brake pedal.
Why you use brushes for single phase induction motors?
There no brushes in an induction motor. The rotor is independent and is a short-circuited cage of parallel bars.
What is the record for the maximum number of main rotor blades in a helicopter?
I can't answer what the record number of main rotor blades is but these three helicopters are the some of the largest helo's in the world and the last has 10 main rotor blades although it has no tail rotor so it depends on your definition of main rotor I guess.Sikorsky S-64 Sky crane - Has 7 main rotor bladesMil Mi-26 - Has 8 main rotor bladesMil Mi-12 - Has 10 main rotor blades - was only really a prototype.
What position does the rotor go under the distributor cap?
On number one terminal, put engine at tdc on 1. If engine/rotor hasn't moved, leave rotor alone.
Difference between squirrel cage and wound rotor induction motor?
Both have 3 a phase stator winding, the squirrel cage has a rotor with bars arranged around it's periphery, these bars are joined at both ends by a continuous ring. This forms a closed circuit of low resistance which is fixed. The wound rotor (slip ring motor) is similar in construction but the bars are replaced by copper windings, similar to those in the stator. They are star connected and the three ends are brought out to slip rings which allow an electrical connection to be made to the outside world. When no connection is made between these ends and the stator is energised, little current flows in the stator which does not turn, but when some resistance is inserted, current flows in the stator windings and the rotor rotates. As the rotor gains speed the resistance is taken out of circuit and the slip rings shorted together. The motor runs as a cage induction motor.
