Does a transformer work when a DC current flows through the primary? If not, why?
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Does a transformer work when a DC current flows through the primary? If not, why?
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- A step-up transformer is designed so that the output of its secondary winding is 2000 V when the primary winding is connected to a 110-V line voltage. If there are 100 turns in the primary winding, how many turns are there in the secondary winding? 1820 2200 200 18If the voltage of the primary coil in a transformer is twice that of the voltage in the secondary coil, then the current in the secondary coil is ____ that of the primary coil. Question 4 options: four times twice as much the same as 1/2 as much 1/4 as much None of the other responses are correct.QUESTION 7 The primary of a transformer has 120 turns, while the secondary of the same transformer has 300 turns. If the primary receives a current of 20 A from an external power source, what will be the current in the secondary? О а. 12 А O b. 10 A О с. 8.0 А O d. 14 A О е.6.0А
- Can you help with 5a and subquestion 5b 5a. An American traveler in Australia carries a transformer to convert Australia’s standard 230 V to 115 V so that she can use some small appliances on her trip. What is the ratio of turns in the primary and secondary coils of her transformer? 5b. What is the ratio of input to output current? (How could a Australian traveling in the United States use this same transformer to power her 230 V appliances from 115 V?) This is not and will not be gradedA simple AC generator consists of 20 coils of wire with an area of 1 000 cm2 and placed in a region where the magnetic field is 0.5 T. How long will it generate a peak electromotive force of 220 V?