How can you distinguish the primary winding from the secondary winding in a step-up transformer?

Q: For an AC Generator, describe how an induced current is produced.

A: ways to induce current -1) by moving a coil in M.F.→current can be induced either by moving it in a…

Q: A step-down transformer (turns ratio =1:8) is used with an electric train to reduce the voltage from…

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Q: Explain how you could thaw out a frozen water pipe by wrapping a coil carrying an alternating…

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Q: Describe the mechanism for the occurrence of losses in transformer cores and how to reduce them?

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Q: Determine the magnitude of the torque acting on the free end of the coil and caused by a 0.90-T…

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Q: Why doesn’t a transformer work with direct current? Why is ac required?

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Q: Which of the following can a transformer accomplish?(a) Changing voltage but not current.(b)…

A: Transformer

Q: A step up transformer decreases current. O True O False

A: Applying conservation of energy on primary and secondary coil we can see  Pp=Ps  i.e. Power in…

Q: What is a transformer? Why does it work?

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Q: Determine the magnitude of the torque acting on the free end of the coil and caused by a 0.90-T…

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Q: An enclosed transformer has four wire leads coming fromit. How could you determine the ratio of…

A: Given: From the given information, we need to find the ratio of turns and the pairs of the wires of…

Q: 2. If a transformer has an input current of 843A, an output current of 350A, and has 400 primary…

A: 2) Input current = 843 A Output current = 350 A primary windings = 400

Q: A step down transformer takes the primary voltage from 2,000 V to 20 V. Find the ratio of the turns…

A: Given data: VPrimary = 2000 V VSecondary = 20 V Need to determine the ratio of the turns for the…

Q: 3. If a transformer has 4000V in the primary winding and 200V in the secondary winding, what type of…

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Q: What is Electromagnetic Induction (EMI)? Differentiate a transformer with a generator

A: To determine,What is Electromagnetic Induction (EMI) and Differentiate a transformer with a…

Q: A step down transformer on a 212 volt line has 589 loops on the primary and 172 loops on the…

A: Given  Primary line  No of loops ,n1 = 589 loops  Voltage,V1 = 212 Volts    Secondary line  No of…

Q: State two disimilarities and two similarities between a dc motor and an ac generator.

A: dc motor and an ac generator have electromagnets and armature etc. and the external circuit of both…

Q: An AC voltage of 12.0 V is applied to the primary of a transformer that has 3 times as many turns in…

A: The equation for a transformer is given by VPVS=NPNS  (1) Here, VP is the voltage in primary coil,…

Q: State two factors on which the magnitude of induced emf in a secondary coil of a transformer…

A: The magnitude of induced emf in a secondary coil of a transformer depends on the change in magnetic…

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: Why can we not use a transformer on a DC circuit?

A: Transformers work on the principle of mutual induction.

Q: What exactly does a step down transformer step down?

A: Step down transformer is used to drop the voltage from higher voltage to low voltage.

Q: Are the primary and secondary coils in a transformer physically linked, or is there space between…

A: Primary and the secondary coil of a transformer

Q: How are the emf in the primary and secondary coils of a transformer related with the number of turn…

A: Emf in the coil is directly proportional to the number of turns.

Q: explain why a transformer may be operated only on AC?

A: Transformer works only in a.c because it works on the principle of the rate of change of magnetic…

Q: An ideal neon sign transformer provides 9 250 V at 30.0 mAwith an input voltage of 115 V. Calculate…

A: (a) For an ideal transformer, the power input equals the power output. The input power of the…

Q: n the transformer experiment performed in the lab, following coils were used to form a step up…

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Q: List down 3 ways in increasing the EMF of induced coil.

A: EMF is directly related to magnetic flux through the coil so if we increase magnetic flux  per unit…

Q: How does a transformer keep the circuits oscillations going? And how can the frequency in a coil…

A: Given : To explain how does a transformer keep the circuits oscillations going? And how can the…

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

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Q: On what principal does a transformer works?

A: Principal of Transformer:- It works on the principal of electromagnetic Induction and mutual…

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: explain what cause physical vibration in transformars at twice the frequency of the AC power…

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Q: In comparing the different methods of measuring the value of the mutual inductance between the two…

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Q: Name and state the principle of a simple ac generator? What is its use?

A: Name of Principle: Faraday’s Law of Electromagnetic InductionPrinciple of A.C. Generator : When a…

Q: Explain how the rate of change of the magnetic flux affects the induced emf or current in a circuit.

A: The magnetic field is the region around which the magnetic force is felt. In a magnetic field, there…

Q: In this lab, you learned that if a coil is connected to a DC source, the moment we turn on the…

A: According to the Faraday’s law of electromagnetic induction the magnitude of the induced emf in a…

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.