1. Is there direct contact between the primary and secondary coils in a transformer? 2. Why...
1. Is there direct contact between the primary and secondary coils in a transformer?
2. Why does the coil in a DC motor turn? Compare that to the means by which a generator produces current
3. Why are only a few types of atoms (iron, for example) magnetic?
Homework Answers
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1. Is there direct contact between the primary and secondary
coils in a transformer?
2. Why...
A transformer has a primary circuit with 12 coils while the secondary circuit contains 2 coils...
A transformer has a primary circuit with 12 coils while the secondary circuit contains 2 coils and has a potential of 8V across it. What is the potential on the primary input of the transformer? Answer: The primary coil of a transformer has 30 turns and 55V across it. What is the potential across the secondary coil which contains 12 turns? Answer:
Questions [L] A transformer works with: AC current, BC current, CC current, DC current (2) The...
Questions [L] A transformer works with: AC current, BC current, CC current, DC current (2) The input side of a transformer is known as the: initial, startup, primary, input. [] The iron core transfers: current, voltage, induction, magnetism. [4] The changing magnetic flux through the secondary coil creates: 2 electricity, magnetic poles, transformers, the flux capacitor. [5] The current flowing through the primary coil creates: magnetism, electric poles, transformers, the flux inductor, [6] The primary coil has the less turns....
A transformer consists of a 500-tum primary coil and a 2 000-turn secondary coil. If the...
A transformer consists of a 500-tum primary coil and a 2 000-turn secondary coil. If the current in the secondary is 3.00 A. what is the primary current?
8A sensitive current indicating instrument is a 9 in a transformer, changes in the magnetic field...
8A sensitive current indicating instrument is a 9 in a transformer, changes in the magnetic field of the primary coil are sensed by the nearby secondary coil CO According to Faraday's law, these changes of magnetic field intensity at the secondary coil voltage in the secondary a. produce b. inducre c eliminate electric current by rotating a coil within a stationary magnetic field is a(n) a. Electric motor b. Generator 11 Clusters of aligned iron atoms are called a. Magnets...
8A sensitive current indicating instrument is a 9 in a transformer, changes in the magnetic field...
8A sensitive current indicating instrument is a 9 in a transformer, changes in the magnetic field of the primary coil are sensed by the nearby secondary coil CO According to Faraday's law, these changes of magnetic field intensity at the secondary coil voltage in the secondary a. produce b. inducre c eliminate electric current by rotating a coil within a stationary magnetic field is a(n) a. Electric motor b. Generator 11 Clusters of aligned iron atoms are called a. Magnets...
Part A: A transformer with turns ratio (primary/secondary) of 18:1 is used to step down the...
Part A: A transformer with turns ratio (primary/secondary) of 18:1 is used to step down the voltage from a 120 V wall socket to be used in a battery charger. What is the voltage supplied to the recharger? Part B: The electric motor in a toy train requires a voltage of 9.0 V. Find the ratio of turns on the primary coil to the turns on the secondary coil in a transformer that will step the 120-V household voltage down...
A transformer has 460 turns in the primary coil and 180 in the secondary coil. 1)by...
A transformer has 460 turns in the primary coil and 180 in the secondary coil. 1)by what factor does it change the current? IsIp =
transformers
Learning Goal: To understand the concepts explaining the operation of transformers.One of the advantages of alternating current (ac) over direct current (dc) is the ease with which voltage levels can be increased or decreased. Such a need is alwayspresent due to the practical requirements of energy distribution. On the one hand, the voltage supplied to the end users must be reasonably low for safety reasons(depending on the country, that voltage may be 110 volts, 220 volts, or some other value...
1. A loop of wire passes through a constant magnetic field going out of the page....
1. A loop of wire passes through a constant magnetic field going out of the page. As the loop begins to enter the magnetic field what direction will the current be induced? Counter clockwise Into the page Out of the page In a zig zag around the earth Clockwise 2. Faraday’s low of induction states that the emf induced in a loop of wire is proportional to (magnetic flux)/(time) (time)/(magnetic flux) (magnetic flux)(magnetic field) (current)/(time) (magnetic flux)(area) 3. The number...
1. Is the power supply for a transformer AC or DC? Explain in detail why only...
1. Is the power supply for a transformer AC or DC? Explain in detail why only this type of power supply will work. 2. Some configurations with the iron core have low efficiency while others have high efficiency. What is the iron core doing to cause this? Be specific. (Hint: think about how a transformer works.) 3. For an ideal transformer the energy must be conserved, so the average power (P=IV) in the two circuits must be equal. Therefore, if...
A transformer has a primary circuit with 12 coils while the secondary circuit contains 2 coils and has a potential of 8V across it. What is the potential on the primary input of the transformer? Answer: The primary coil of a transformer has 30 turns and 55V across it. What is the potential across the secondary coil which contains 12 turns? Answer:
Questions [L] A transformer works with: AC current, BC current, CC current, DC current (2) The input side of a transformer is known as the: initial, startup, primary, input. [] The iron core transfers: current, voltage, induction, magnetism. [4] The changing magnetic flux through the secondary coil creates: 2 electricity, magnetic poles, transformers, the flux capacitor. [5] The current flowing through the primary coil creates: magnetism, electric poles, transformers, the flux inductor, [6] The primary coil has the less turns....
A transformer consists of a 500-tum primary coil and a 2 000-turn secondary coil. If the current in the secondary is 3.00 A. what is the primary current?
8A sensitive current indicating instrument is a 9 in a transformer, changes in the magnetic field of the primary coil are sensed by the nearby secondary coil CO According to Faraday's law, these changes of magnetic field intensity at the secondary coil voltage in the secondary a. produce b. inducre c eliminate electric current by rotating a coil within a stationary magnetic field is a(n) a. Electric motor b. Generator 11 Clusters of aligned iron atoms are called a. Magnets...
8A sensitive current indicating instrument is a 9 in a transformer, changes in the magnetic field of the primary coil are sensed by the nearby secondary coil CO According to Faraday's law, these changes of magnetic field intensity at the secondary coil voltage in the secondary a. produce b. inducre c eliminate electric current by rotating a coil within a stationary magnetic field is a(n) a. Electric motor b. Generator 11 Clusters of aligned iron atoms are called a. Magnets...
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