Inductance/Inductors A generating coil on a former 100mm long has 120 turns and rotates in a 1.4 T magnetic field. Calculate the maximum EMF generated if the coil, having a diameter of 60 mm, rotates at 450 rev/min

Q: The combined inductance of two coils connected in series is 0.6 H or 0.1 H depending on the relative…

A: In tha question, The combined inductance of two coils connected in series is 0.6 H or 0.1 H…

Q: When a current of 2A flows in a coil having 650 turns. If the coil inductance is 850 mH, the flux…

A: Given, Current, I= 2A Turns, N= 650 Inductance, L= 850 mH

Q: A coil induces 500 mV when the current changes at the rate of 0.2 A/sec, then the value of…

A: The value of inductance is 2.5 Henry. The detailed solution is provided below.

Q: Calculate the equivalent capacitance across a and b given the following A = 28 F, B = 14 F, C = 25…

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Q: 5 An iron-core inductor has the following characteristic: 0.5+ 22 a. Determine the energy,…

A: (a) Calculate the energy of the inductor.

Q: One of the applications of the mutual inductance is Wireless Charging of Electrical Vehicles O…

A: Application of mutual inductance is

Q: A capacitor having a capacitance 2 μF is charged a voltage of 1000 V Calculate the stored energy in…

A: Given data, Capacitance C=2 μF Voltage V = 1000 V

Q: 1. Calculate the maximum value of the e.m.f. generated in a coil which is rotating at 50 rev/s in a…

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Q: 5. Two magnetically coupled coils have 500 and 1500 turns, respectively. When the first coil carries…

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Q: Two magnetically coupled coils have 500 and 1500 turns, respectively. When the first coil carries a…

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Q: Voltage Drop across Inductor is Inversely Proportional to the time rate of change of current. Select…

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Q: An air-core circular coil has 5000 turns. The inner and outer diameter are 20cm and  24cm,…

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Q: When a current of 2A flows in a coil having 750 turns. If the coil inductance is 600 mH, the flux…

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Q: A coil induces 900 mV when the current changes at the rate of 0.3 A/sec, then the value of…

A: In this answer we will try to find the inductance using the formula for the voltage induced in the…

Q: A magnetic field strength of 5000A/m is applied to a circular magnetic circuit of mean diameter 250…

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Q: A coil induces 900 mV when the current changes at the rate of 0.3 A/sec, then the value of…

A: Voltage, V = 900mV Change in current = 0.3A/sec

Q: 4. When two coils having inductances of 5H and 4H respectively were wound uniformly onto a…

A: coefficient of coupling = mutual inductance bateween two coilproduct of inductance of the  two…

Q: A coil having inductance of 0.04 H is connected across 50 hertz AC supply. Calculate the inductive…

A: Given, A coil having Inductance, L = 0.04 H Frequency, f = 50 Hz

Q: A generating coil on a former 100mm long has 120 turns and rotates in a 1.4 T magnetic field.…

A: Given n=450 rev/minω=2πn60=2×3.14×45060=47.12 rad/sec Turns N=120 Magnetic field B=1.4 T Diameter…

Q: When a current of 4A flows in a coil having 550 turns. If the coil inductance is 800 mH, the flux…

A: Solution: The flux through an inductor is the self inductance of coil times the current through it.…

Q: Example 7.33. Two coils of inductances 4 and 6 henry are connected in parallel. If their mutual…

A: Given:L1 = 4H L2 = 6H M = 3H   i Mutual inductance assists the self-inductanceL = L1L2-M2L1+L2-2ML =…

Q: calculate the heart rate in beats perminute for R=150 kΩ, C=6 μF, if the capacitor discharges when…

A: Calculate the time constant of the circuit. τ=RC=150×103 Ω6×10-6 F=0.9 s

Q: The EMF of 100 V is induced in a coil, when a current of 4 A collapses uniformly to zero in 2 8ms,…

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Q: Design a spherical shell to give a capacitance of 40 pF. You can use an insulator having a…

A: Given  Capacitance of the spherical shell is 40 pF The radius of the out shell is 40 cm Insulator…

Q: 7. Calculate the coil inductance when a current of 4A in a coil of 800 turns produces a flux of…

A: (Q.7) Given, Current flows through a coil(I)= 4 A Number of turns (N)=800 Flux = 5 mWb

Q: If the area of a coil with inductance L, is increased from 100mm2 to 200mm2 then its inductance…

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Q: 1. Calculate the coil inductance when a current of 4A in a coil of 800 turns produces a flux of…

A: Inductance of  coil is Flux linkage in coilcurrent                                =N×Flux I where N…

Q: nts A 100 mH coil of negligible resistance is connected to an AC circuit in which an effective…

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Q: A coil RL is connected in series with a capacitor across the 220 V, 60 hz, AC supply. If this…

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Q: Calculate the inductive reactance of a 0.9-μH coil at 800 MHz.

A: In this question we need to find a inductive reactance of a 0.9-μH coil

Q: A. What is the coefficient of coupling of two co inductance are 1.2 and 2 H? B. An emf of 9.7mV is…

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Q: The current in an inductor L = 220 mH varies according to I = 3.8 sin(80t) A. Find: The induced emf…

A: Given, Inductor, L=220 mH Current in inductor, I=3.8sin80t A Time, t=2.6 ms

Q: An ac voltage source is connected across the plates of a parallel-plate capacitor so that E =…

A: current through capacitor = cdvdt where v is the voltage in volts  for a parallel plate capacitor ,…

Q: A coil with 120 turns effected by variable magnetic field which is decreased by 40µwb per second,…

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Q: Two inductively coupled coils have self inductance L1 = 50 mH and L2 = 200 mH. The maximum possible…

A: Given, Two inductively coupled coils have, Self inductance, L1=50 mH Self inductance, L2=200 mH

Q: A flat circular coil with 40 loops of wire has a diameter of 32 cm. What current must flow in its…

A: The magnetic field at the center of the circular loop is given by the expression as shown below:…

Q: 2. How much is the inductance of a coil that induces 500 V when the current changes at the rate of…

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Q: Calculate the inductive reactance of a 150mH inductor that has a 100mA RMS 2kHz current passing…

A: Inductive reactance =XL=wL=2 x pi x f x L f=2kHz or 2000 Hz L=150 x10^-3 H

Q: Helmholtz coils. Design a pair of Helmholtz coils, separated by 0.5 m, to produce a magnetic field…

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Q: The voltage across a 1.3 nF capacitor is 13 V, how much energy is stored in the capacitor? a) 110…

A: Voltage across capacitor  V = 13 v Capacitance  C = 1.3 nF Energy stored in the capacitor = ?

Q: A parallel-plate air capacitor with capacitance of 3.00 uF has plates separated by a distance of…

A: we need to calculate the energy density in the region between the plates of the capacitor.

Q: When a current of 2A flows in a coil having 500 turns. If the coil inductance is 900 mH, the flux…

A: Need to find flux linkage

Q: The energy stored in an 1400 turns inductor is 15 Joules, if the inductance value is 1 H. Find (a)…

A: Energy E=15J Inductor L=1H No of turns N=1400 a. Current flowing through the coil?  b. Flux linking…

Q: Calculate the current taken by a 23µF capacitor when connected to a 200V, 50 Hz supply

A: Impedance of capacitor  Xc= 12πfc ohms Where f is the frequency in Hz . and C is capacitance in F .…

Q: 7. Two inductors whose self-inductances are given as 75mH and 55mH respectively, are positioned next…

A: Mutual Inductance- The term mutual inductance refer to the interaction between the magnetic field of…

Q: A coil having a resistance of 25 Ω and an inductance of 150 mH is connected in  series  with  a  80…

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Q: The energy stored in an 1800 turns inductor is 10 Joules, if the inductance value is 4 H. Find (a)…

A: Energy stored =0.5 L×I2 Inductance=number of turns×flux current in coil. EMF =L×didt.

Q: Calculate the coil Inductance when a Current of 10 A in a coil of 1500 turns produces a flux of 15…

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Q: 2) A length of an air cored solenoid is 1.7m and area of cross-section is he number of turns of coil…

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Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.