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Explain Squirrel- cage rotor
Squirrel- cage rotor having of a slotted laminated core of sheet-steel. The slots of the rotor are not always parallel to the slots on the stator, but they are given a twist called as skew. (Skew decreases noise, eliminates cogging and enhances the starting torque). The windings are placed in the slots. Every slot carries a thick copper or aluminum bar. These bars are short-circuited on either end by a solid copper or aluminum ring known as end-ring. Most of the 3-phase induction motors are of squirrel cage type, due to its rotor is simple and rugged in construction and is cheaper.
what is non conventional sources?
Explain Transmitters and Receivers Your radio is able to give you the news or play music because it can receive signals that are transmitted by radio stations. Radio waves are el
When two molecules approach each other, the charges in each are disturbed and redistributed in a fashion that the average distance among the unlike charges in the two molecules is
Quality: It is the characteristics of a sound by which we can distinguish among two sounds of the similar pitch and the loudness is known as quality of sound.
Two grating A and B have the same width of the ruled surface but A has greater number of lines. Giving reasons compare in two cases (a) Intensity (b) Width of principal maxim
Two resistors, of resistance 3 and 6, are connected in parallel across a battery having a voltage of 12V. Determine (a) The total circuit resistance and (b) The current ?
A 2.5 kg rock is located on the Earth''s surface. If the mass of the moon is 7.4 E 22 kg, and the separation distance between the center of the rock and the center of the moon is 3
A 400V, 3-phase star linked alternator supplies a delta-connected load, each phase of which has a resistance of 30 and inductive reactance 40. Calculate (a) the current sup
Three children are riding on the edge of a merry-go-round that is 100 kg, has a 1.60-m radius, and is spinning at 20.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If
Q. What do you mean by additive nature of charges? Give an example. Additive nature of charge The entire electric charge of a system is equal to the algebraic sum of electric
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