How can you measure the self-inductance of the primary and the secondary coils of a single-phase transformer in lab?
Q: A coil is wound as a transformer of rectangular cross-section. If all the linear dimensions of the…
A: Self inductance L= μ0 N2 A / l = μ0 n2 lA
Q: The figure below shows a toroidal coil with N-39.000 turns, each of radiusr-0.019 m. An infinite…
A: Given: r=0.019m, N=39000, R=0.195 The mutual inductance between the toroid and straight wire is…
Q: An induced EMF of 20 mV is measured across a coil of 50 closely wound turns while the current…
A: Induced Emf ε=20 mV Number of Turns N=50 Initial Current Ii=0.0 A Final CurrentIf=5.0 A Time…
Q: Can a circuit element have both capacitance and inductance?
A: No, it is not possible that a circuit element has both capacitance and inductance.
Q: The primary circuit of a transformer consists of an A.C. power supply (Vrms 48.5 V) and a 7.96 mH…
A: V (rms) = 48.5 V I (rms) = 1.54 A L = 0.00796 H Using , V = I Z where Z is the impedence 48.5 = 1.54…
Q: A solenoid has an inductance of 0.179-mH with 53 turns of wire. Suppose the cross-sectional area of…
A: Given DataL1=0.179mHN1=53A1A2=A12l2=2l1N2=2N1
Q: How fast can the 150 A current through a 0.250 H inductor be shut off if the induced emf cannot…
A: Given: Current, i = 150 A inductance, L = 0.25 H Voltage, V = 75 V
Q: An "infinite" solenoid has 968 turns/m and circular cross section of radius 15.3 m. A small circular…
A: According to Faraday's law of electromagnetic induction The induced emf through a coil is given by…
Q: How can we calculate the self inductance of a solenoid?
A: Solenoid is a device made by a coil of wire.
Q: A toroidal coil has an inductance of 47 mH. Find maximum self-induced emf in the coil when the…
A:
Q: For the circuit shown, what is the rate of change of the current in the inductor when the current in…
A: Solution: It is given that, Current in the battery(I)=0.30 A
Q: A coil is connected in series with a 14.4 kQ resistor. An ideal 64.8 V battery is applied across the…
A:
Q: A coil of inductance 0.5H and resistance 100n is connected to a 240V,50HZ ac supply. a) What is the…
A: Given value--- inductance = 0.5 H. resistance = 100 ohm. Voltage = 240 V frequency = 50 Hz. We…
Q: A pair of adjacent coils has a mutual inductance of 1.5 H. If the current in one coil changes from 0…
A: Faraday gave the principles of Electromagnetic Induction which meant that change in the magnetic…
Q: The self-inductance of the circuit in the figure below is 9.20 x 108 H. Find the back emf when the…
A: Given data, theself-inductance is given as L = 9.20 x 10-8 H.The rate of increase in current is .
Q: A toroid has 250 turns, a cross-sectional area of 5.5 x 10 - 4 m2, and a mean radius of 0.025 m.…
A:
Q: Suppose that you require a total inductance of 50 mH. You have available a 10 mH coil and a 22 mH…
A:
Q: a Suppose the transformer of Figure 1 has 500 turns on its primary and 1000 turns on it: secondary.…
A: Given that,Number of turns on primary, NP=500Number of turns on secondary, NS=1000turns ratio , a=…
Q: Is more energy stored in an inductor by doubling the inductance or by doubling thecurrent?
A: To determine: Whether the energy stored is more or not by doubling the inductance or the current.
Q: Two coils of wire are placed next to each other. The current in the first coil increased from 0 to…
A: According to the laws of electromagnetic induction, the induced emf in the coil is given by where,…
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: A 4-79 permalloy solenoid coil needs to produce a minimum inductance of 1.5 Wb/m2 . If the maximum…
A:
Q: A solenoid with diameter 0.300 [cm] and length 12.0 [cm] is wound uniformly, and a second coil is…
A: Given:diameter d of the solenoid = 0.300 cm [centi = 10-2]Length l of the solenoid = 12.0…
Q: State two ways to produce a higher emf in an ac generator?
A: The two ways to produce a higher electromotive force (emf) in a ac (alternating current) generator…
Q: he mutual inductance between the primary and secondary of a transformer is 0.3H. Compute the…
A: The equation for the emf induced is given by ε=-MdIdt Here, M is the mutual inductance and dIdt is…
Q: A long solenoid with a axa square cross section has n turns per length sits iwth a vertical central…
A: The mutual inductance between the long solenoid and the flat circular coil can be found by…
Q: When 100 volt D.C is applied across a coil, a current of one ampere flows through it, when 100V ac…
A:
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: What is the reactance is 10 2 at 60 Hz? self-inductance of a coil whose
A: Solution:-Given thatReactance (XL)=10 ΩFrequency (f)=60 Hz
Q: A student needs to reduce the percent power loss by 100 times by using a transformer. What would the…
A: Power loss (Ploss) = I2R ...... (1) Here, I is the current and R is resistance As I = P/V .......…
Q: Induced potential difference of 5V is developed across a coil when the current flowing through it…
A: Given: The induced potential difference, V= 5 v Current decrease at the rate of di/dt=-25 A/s A…
Q: Two coils of wire are placed next to each other. The current in the first coil increased from 0 to…
A:
Q: The current in a coil drops from 3.5 A to 2.0 A in 0.50 s. Ifthe average emf induced in the coil is…
A: Writing the formula for induced emf:
Q: ... .. In a transformer the mutual inductance of two coils is 0.3 H where as the self inductance of…
A:
Q: A coil having an inductance of 200 mH is magnetically coupled to another coil having an inductance…
A: Given data, Inductance of 1st coil L1=200 mH. Inductance of 2nd coil L2=500 mH. Coefficient of…
Step by step
Solved in 2 steps
- The next series of diagrams illustrate a full AC- cycle for the Primary coil of the transformer. In each diagram of the Secondary coil: (a) Draw the magnetic field vector (from the Primary, through the iron core). Label it Bext (b) Indicate what is the change in flux sensed by the coil. OB increasing orbs decreasing. (c) Draw the induced magnetic field vector. Label it B (d) Show the induced current in the coil (in correct direction). EM INDUCTION Activity NAME: The Transformer iron core iron core Primar y Secondar y Primar y Secondar y First Quarter of Primary AC current: Second Quarter of Primary AC current: The current in the PRIMARY COIL is decreasing. The current in the PRIMARY COIL is increasing. The flux through the SECONDARY COIL is The flux through the SECONDARY COIL is iron core iron core Primar y Secondar y Primar y Secondar y Third Quarter of Primary AC current: Fourth Quarter of Primary AC current: The current in the PRIMARY COIL is decreasing. The current in the PRIMARY…If the inductance in the circuit shown below is 250mH and the current in the circuit reaches half its maximum value 1.5ms after the switch is closed, (a) what is the time constant of the circuit? (b) what is the resistance of the circuit? IntWhen 100V D.C. is applied across a coil, a current of 1A flows through it. When 100 V A.C. of frequency 50 Hz is applied to the same coil only 0.5 A, current flows through it. Calculate resistance, impedance and self inductance of the coil.
- An ideal solenoid has a length of 25 mm. If the windings are compressed so that the length is reduced to ½ of its original length how does the inductance change?On which of these factors does the self-inductance of a coil depend? (check all that apply): Select one or more than one: A) The current B) Coil diameter C) The permeability of the medium D) The number of turnsTwo solenoids are part of the spark coil of an automobile. When the current in one solenoid falls from 6.0 A to zero in 2.5 ms, an emf of 30 kV is induced in the other solenoid. What is the mutual inductance Mof the solenoids?
- if coil 2 is turned 90 so that its axis is vertical, does the mutual inductance increase or decrease? Explain.QUESTION 5 If an inductor carrying a 1.70-A current stores an energy of 0.300 mJ, what is its inductance? (b) How much energy does the same inductor store if it carries a 3.0-A current?An air cored solenoid has a length of 25cm and diameter of 2.5cm, and contains 1000 closely wound turns. Theresistance of the coil is measured to be 1.00Ω. Compare the inductive reactance at 100Hz with the resistance ofthe coil.