n the workshop, when manufacturing an inductor, a technician winds 100 turns of a fine conductor onto a large iron ring and leaves it ready for testing. The next day, another technician comes and inadvertently coils 100 more laps with another fine conductor in the opposite direction. Thinking of having two identical coils in parallel, they connect the terminals of the two in parallel and feed both with the same source. If the same current, I0, flows through the two coils, and we draw an Ampere loop through the center of the ring. Choose the one from the following options. Select one: a. The net current within the Ampere loop is 100 I0 . b. The net current within the Ampere loop is zero. c. The magnetic flux in the ring is going to be twice that of a single coil. d. The net current within the Ampere loop is 200 I0 .

n the workshop, when manufacturing an inductor, a technician winds 100 turns of a fine conductor onto a large iron ring and leaves it ready for testing. The next day, another technician comes and inadvertently coils 100 more laps with another fine conductor in the opposite direction. Thinking of having two identical coils in parallel, they connect the terminals of the two in parallel and feed both with the same source. If the same current, I0, flows through the two coils, and we draw an Ampere loop through the center of the ring. Choose the one from the following options. Select one: a. The net current within the Ampere loop is 100 I0 . b. The net current within the Ampere loop is zero. c. The magnetic flux in the ring is going to be twice that of a single coil. d. The net current within the Ampere loop is 200 I0 .

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter17: Resistive-inductive Series Circuits

Section: Chapter Questions

Problem 2PA: You are a journeyman electrician working in an industrial plant. Your task is to connect an inductor...

See similar textbooks

Similar questions

You are a journeyman electrician working in an industrial plant. Your task is to connect an inductor to a 480-V, 60-Hz line. To determine the proper conductor and fuse size for this installation, you need to know the amount of current the inductor will draw from the line. The nameplate on the inductor indicates that it has an inductance of 0.1 H. An ohmmeter reveals that it has a wire resistance of 10 . How much current should this inductor draw when connected to the line?
Three capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 - Hz power line. An ammeter indicates a circuit current of 8.6 amperes. How much current is flowing through the 40F capacitor?
You are working in an industrial plant. You have been instructed to double the capacitance connected to a machine. The markings on the capacitor, however, are not visible. The capacitor is connected to 560 volts and an ammeter indicates a current of 6 amperes flowing to the capacitor. What size capacitor should be connected in parallel with the existing capacitor? What is the minimum AC voltage rating of the new capacitor? What is the minimum DC voltage rating of the new capacitor? What is the minimum KVAR size that can be used in this installation?
A capacitor uses air as a dielectric and has a capacitance of 3 F. A dielectric material is inserted between the plates without changing the spacing, and the capacitance becomes 15 F. What is the dielectric constant of this material?
You are an electrician working in an industrial plant. You discover that the problem with a certain machine is a defective capacitor. The capacitor is connected to a 240-volt AC circuit. The information on the capacitor reveals that it has a capacitance value of 10 mF and a voltage rating of 240 VAC. The only 10-mF AC capacitor in the storeroom is marked with a voltage rating of 350 WVDC. Can this capacitor be used to replace the defective capacitor? Explain your answer.
You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors with a 480-VAC rating. However, you find two capacitors rated at 50 F and 370 VAC. Can these two capacitors be connected in such a manner that they can replace the defective capacitor? If yes, explain how they are connected and why the capacitors will not be damaged by the lower voltage rating. If no, explain why they cannot be used without damaging the capacitor.
Q.) Two coils with inductances L1 = 10H and L2 = 12H are connected in series and spaced apart so that they do not influence each other. • What is their equivalent inductance? • We place the coils together in such a way that their mutual inductance is LM = 7H. What is their equivalent capacitance if they are wound in the same direction, and what is it if they are wound in opposite directions?
11. Consider a network shown in the figure consisting of a resistance, a capacitor, an inductor and three alternating voltage sources 1, 2 and 3. Terminal voltages of the sources 1, 2 and 3 are v₁ = Vo sin(t), V₂ = Vo sin(cot +120°) and v3 = Vo sin(ot+240°) respectively and moduli of the reactance of the capacitor and the inductor are equal to the resistance. Then 10 3 P (A) Peak value of voltage at point P is vo (√3+1) (B) Peak value of voltage at point P is vo (√3-1) (C) Vp = Vo (√3+ 1) sin(oot +90) (D) vp = Vo (√3-1) sin(oot + 180)
If i have a coil with an inductance 0.14 H and a resistance of 12ohm is connected across a 110V , 25Hz source. how would you make the current in the coil and the phase between the cirrent and supply voltage ?
A cylinder whose radius is 2cm and altitude of 100cm is uniformly wound with 2500 turns of wires in a single layer. A second layer of 100 turns and of much finer wires is wound over the first near its center. Calculate the mutual inductance of the coils.
ELECTRICAL TRANSIENTSA certain precision 1 microfarad capacitor has very high resistance material used between its conducting surface. The capacitor is charged to 1 volt at t = 0 and disconnected from the source. It is found that the voltage drops to 0.80 v in 1 hour. What is the insulator resistance?
A coil of inductance 1 henry and negligible resistance is connected in series with a capacitancr of 10^-6 farad and an emf E volts. Taking Q=I=O at time t=0, find th3 charge Q anf the current I when t= 0.001 see if (a) E= 100 volts, (b) E= 100sin500t, (c) E= 100sin1000t