a)b)Define the mutual inductance between two coils not electrically connected.Coils A and B are magnetically coupled. Coil A has a self-inductance of 0.30 H and300 turns, and coil B has a self-inductance of 0.20 H and 120 turns. A change offlux of 8 mWb occurs in coil B when a current of 3A is reversed in coil A.Determine:i. The mutual inductance between the coils, andii.The coefficient of coupling.CS Scanned with CamScanner

a) If two coils which are not electrically connected having self inductances L1 and L2 respectively…

Answered: a) b) Define the mutual inductance…

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter21: Resistive-capacitive Series Circuits

Section: Chapter Questions

Problem 6RQ: A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating...

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A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating of 600 WVDC. The capacitor and resistor are connected to a 480-V, 60-Hz circuit. Is the voltage rating of the capacitor sufficient for this connection?
An iron core 0.4m long and 5 cm2. In cross section, is wound with 300 turns. When a current of 0.5 A flows in the coil, how much is the inductance of the coil. Assume the core has a permeability of 2500. Ans 350mH
1. A purely resistive circuit the current is leading by 90° with respect to voltage. 2. A purely inductive circuit the current is lag behind the voltage by 90°. 3. A purely capacitive circuit the current is lead by 90° with respect to the voltage. 4. A capacitor element stored magnetic energy. 5. An inductor element stored electrical energy. 6. Resistor elements consume power. 7. Angle between current and voltage is called power. 8. The power factor angle for a purely resistive is zero. 9. The power factor angle for a purely inductive load is -90°. 10. The power factor of a purely capacitive is leading.
4
C) A 25 A electrodynamic ammeter is controlled by a spring having a constant of 5.7295x 10-6 Nm/rad. The full scale deflection is 110°. Determine the inductance of the instrument while measuring a current of 20 A. The mutual inductance at 0° deflection is 4 u H and the change in mutual inductance is linear with the deflection.
Both the number of turns and the core length of an inductive coil are double. Its .... self inductance will be
(a) 13. A coil with 60 turns wound over a ferromagnetic core having relative permeability 400 has an inductance of 50 mH. If coil turns are doubled and the core is replaced by a new ferromagnetic core having relative permeability 600, the new inductance would be (a) 0.03 H (b) 0.3 H (c) 3 H altarnator will reverse if (d) 0.15 H
Please answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. The coil of a generator has an equivalent resistance of 1.5 ohms at 20 °C. After being used for several hours, the resistance is found to be 1.75 ohms. Determine the temperature of the coils at this time. The temperature coefficient of resistance at 0 °C of the coil is 0.004 OC-1.
5. An iron core 0.4m long and 5 cm?. In cross section, is wound with 300 turns. When a current of 0.5 A flows in the coil, how much is the inductance of the coil. Assume the core has a pemeability of 2500.
Inductance
Two coils, A and B having 1200 and 800 turns respectively are placed near to each other.60 % of flux of each coil linked with the other coil. A current of 5A in coil A produces a flux of 0.25 mWb while the same current in coil B produces a flux of 0.15 mWb. Determine (a) mutual inductance and (ii) coupling coefficient.
An inductor is constructed by winding a coil of 100 turns around a magnetic core. The core is a cylinder with radius 0.5 cm and the core material has relative permeability of 1000. The coil covers a length of 10 cm. Determine the resulting inductance. Enter your answer in mH rounded to two decimal places.

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