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Commutator
The function of a commutator is to change alternating current induced in the armature into unidirectional current. The commutator is of cylindrical shape and is made up of wedge-shaped hard drawn copper. These segments are insulated from each other with thin layers of mica sheet. The number of segments is equal to the number of armature coils. Every commutator segment is linked to the armature conductor by means of a copper lug or riser.
Q. Show the Welding Processes and Restrictions? Welding may be performed manually, semi-automatically and or automatically using any process or combination of processes accepte
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Q What do you know about Series welds in spot welding? It is a welding method in which two or more spots are produced simultaneously with only one common but indirect current p
Describe the following key terms: (i) Stream Line (ii) Path Line (iii) Streak Line (iv) Stream Function (v) Potential flow function (vi) Flow net
Bending moment
In a sun and planet type gear, the annular gear (D) has 100 internal teeth, the sun gear (A) has 50 external teeth and a planet gear (B) has 25 external teeth. The gear (B) meshes
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