A step-up transformer increases voltage, or potential energy per unit charge. Howis this possible without violating conservation of energy?

Q: A 115-turn square wire coil of area 0.040 m2 rotates about a vertical axis at 1,270 rev/min, as…

A:

Q: Why does an iron core that extends inside and connects the primary and secondary coils intensify…

A: Magnetic materials are classified into different types based on their behavior in the external…

Q: Make a prediction: Increasing the number of coil windings around the iron bar will make the strength…

A: If we wind a wire around a iron bar then this behaves as solenoid with a medium.

Q: A transformer works on the principle of

A:

Q: One simple, though impractical, way to generate electrical power is shown below. A bar of metal with…

A: Given data: The magnetic field around the bar, B= 0.75T The velocity of the bar, v=0.4m/s The length…

Q: How is electrical energy producedin dams? (That is, how is theenergy of motion of the water…

A: The water stored in dam has potential energy, as it falls down the potential energy gets converted…

Q: What happens when the rotational speed of a generator coil is increased?

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Q: Why would a magnetohydrodynamic drive work better in ocean water than in fresh water? Also, why…

A: To determine the magnetohydrodynamic drive work better in ocean water than in fresh water and…

Q: A 3-0 cage induction motor is conne auto transformer with a tapping of restricts the maximum line…

A: A 3- cage induction motor is connected through an autotransformer with a tapping of 70% which…

Q: ideal transformer,

A:

Q: In electromagnetic induction, how does no. of coils affect the current produced?

A: The phenomenon of Electromagnetic induction is discovered by Michael Faraday in 1831.  The Law of…

Q: What transformer brings the pd back to safe usable levels at the consumers end?

A: To determine,What transformer brings the pd back to safe usable levels at the consumers end.

Q: 6.6 Assume a nonlinear magnetization curve for a current transformer. Show that a percentage…

A: The percentage differential relay is defined as the relay that operates on the phase difference of…

Q: Why is a generator armature harder to rotate when it is connected to a circuit and supplying…

A: It is a matter of energy conservation.

Q: State Faraday's law?

A: The discovery and understanding of electromagnetic induction are based on a long series of…

Q: One simple, though impractical, way to generate electrical power is shown below. A bar of metal vith…

A: given: B=0.75 TR = 3 ohmv = 0.4 m/s l= 15 cm = 0.15 m

Q: Why does an induced current always oppose the change that makes it?

A:

Q: How can one increase the strength of induced current?

A: There are two ways to do that : Strength of induced current increased when strength of magnetic…

Q: he simple, though impractical, way to generate electrical power is shown below. A bar of metal th…

A: Given data: The magnetic field around the bar, B= 0.75T The velocity of the bar, v=0.4m/s The length…

Q: How electromagnetic induction works in Generator? In Induction Cooker? In Magnetic flow meter?

A:

Q: • The area of a 120-turn coil oriented with its plane perpendicularto a 0.33-T magnetic field is…

A:

Q: Name two kinds of energy losses in a transformer. How are they minimized?

A: The two types of major losses in transformers are:Eddy currents.Hysteresis loss.

Q: nagnet in the previous question is now plunged into a coil that has tu v, the induced current in the…

A: Thus emf induced is proportional to rate of change of magnetic flux.

Q: The secondary coil of an ideal transformer has 600 turns and the primary has 30 turns. Show that…

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Q: The induced e.mf in a circuit always oppose the decay or growth of magnetic flux. This statement is…

A: Required : Law related to the statement.

Q: Why will a transformer not work if you are using dc?

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Q: The primary coil of a step-up transformer draws 40 W. Find the power provided by the secondary coil.…

A: The power in secondary We know that,For ideal transformer Power in secondary = power in primary…

Q: What are the functions of a Transformer?

A: The function of the transformer, as the name implies, is to transform alternating current energy…

Q: An ideal transformer has 50 turns in its primary and 250 turns in its secondary. 12-V ac is…

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Q: Discuss how conservation of energy is ascertained when you move amagnet in and out of a coil. Note…

A: Thrusting a pole of a permanent bar magnet through a coil of wire will induce an electric current in…

Q: Does a generator slowly lose its residual magnetism with time? Yes/No and why

A: A generator is a device which converts mechanical energy into electrical energy.

Q: In what sense can a transformer be considered an electrical lever? What does it multiply? What does…

A: A transformer is a device that is used to increase or decrease the voltage as required. Since this…

Q: Your friend says that if you crank the shaft of a dc motor manually, the motor becomes a dc…

A: Any coil of wire spinning in a magnetic field which cuts through the magnetic field is called a…

Q: What would happen if a transformer is connected to a D.C Supply?

A: The transformer is defined as a device that is utilized to manipulate the voltage of the…

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.