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Disadvantages of A.C. Transmission of power
1. An a.c. line needs more copper than a d.c. line.
2. The construction of an a.c. transmission line is more complex than d.c. transmission line.
3. Because of skin effect in the a.c. system, the effective resistance of the line is enhanced.
4. An a.c. line has capacitance. Thus, there is a continuous loss of power because ofcharging current even when the line is open.
The current is an RL circuit drops from 1.1 A to 13 mA in the first second following removal of the battery from the circuit. If L is 12H, find the resistance R in the circuit.
A rigid object is a body with a exact and unchanged size and shape i.e. a body is said to be rigid if the distance among any two particles of the body remains invariant.
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Yes magnetism more important for iit because the weight of this magnetism is very hign so be careful about this magnetism chapter All the best for your preparation
Determine the Brewster's angle for a glass slab (µ=1.5) immersed in water (µ=4/3).
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