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A coil of turns carries a current of and creates a magnetic flux of The inductance is
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Practice questions from similar books
Question 1
Current in a circuit falls form 0.5 A to 0.0 A in 0.1 s. If an average e.m.f. of 200 V is induced, give an estimate of the self inductance of the circuit ?Question 2
A jet plane is travelling west at the speed of 1800 . What is the voltage difference developed between the ends of the wing 25 m long, if the earth's magnetic field at the location has a magnitude of T and the dip angle is Question 4
Do the same exercise as above with the replacement of the earlier transformer by a 40,000-220 V step-down transformer (Neglect, as before, leakage losses though this may not be a good assumption any longer because of the very high voltage transmission involved).Hence, explain why high voltage transmission is preferred?Exercise:
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A small town with a demand of 800 kW of electric power at 220 V is situated 15 km away from an electric plant generating power at 440 V.The resistance of the two wire line carrying power is 0.5 per km.The town gets power from the line through a 4000-220 V step-down transformer at a sub-station in the town.
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| Question Text | A coil of turns carries a current of and creates a magnetic flux of The inductance is |
| Answer Type | Video solution: 1 |
| Upvotes | 157 |
