The capacitive reactance associated with a capacitor is 120 ohms when the frequency of the ac supply is 50 Hz. What will be the value of the capacitor? Express the answer upto 2 decimal places

Q: A car battery has gone dead and it needs to be replaced with a large capacitor. The old car battery…

A: To solve above problem, one should know capacitors and capacitance offered by a capacitor. A…

Q: What is the unit of measurement for the strength of a capacitor? Select one: A. MICROWATT B.…

A: The SI unit to measure the capacitance of capacitor is farad. The term micro is used to denote the…

Q: the ability of a material to generate an electric charge when subjected to pressure a. Piezo…

A: In this we will write about piezo electric effect...

Q: electrical circuit contains a capacitor of 11.24 microfarads and a resistor of 1124 ohms. If the…

A: The solution is given below

Q: The current flowing through a pure inductance 2mH is, l =(15 cos 300t) A. What is the (i) rms and…

A: Inductor- An Inductor also called a choke, is passive type electrical component consisting of a coil…

Q: 20. To what is inductive reactance proportional?

A: The inductive reactance is given by: XL=jωL,Hence, Inductive reactance is proprtional to Inductor…

Q: Calculate the inductive reactance, X₁, of a 2.5 H inductor when operated at a frequency of 50 Hz…

A: Given: Inductance, L=2.5 H Frequency, f=50 Hz

Q: What is the Value of the phase shift, ∆(θ) =? The image below shows an Oscilloscope display showing…

A: An oscilloscope is a very useful and versatile laboratory instrument for the display, measurement,…

Q: Calculate t for capacitors in parallel and series for charging and discharging

A: We need to find the time constant of the capacitors in parallel and series for charging and…

Q: A constant current of 2 micro - ampere charges a capacitor for 20 seconds, how much  charged is…

A: charge of capacitor Q = ∫0ti(t) dtGiven i(t) = 2 μA and time t = 20 seconds

Q: 1) Vr(t) mathematical expression of tension ? 2) Calculate the reactive power on the capacitor

A: Vr(t) mathematical expression of tension ? Calculate the reactive power on the capacitor

Q: a) What is the difference between reactance and impedance? b) What does an inductor oppose a change…

A:

Q: a 0.031-m insulation whose dielectric constant is 5. Another material 0.012 m thick is inserted…

A:

Q: Given that vC(0) = 2 cos(155°) V, what is the instantaneous voltage across a 2- μF capacitor when…

A:

Q: A resistor & a capacitor are connected in series across 230V, ac supply. The current taken by the…

A:

Q: What is the average rate at which electrical energy is converted to heat in the resistor? Express…

A: Power is the time rate of change of energy. Its SI unit is watt.   Given:…

Q: A certain precision 1 microfarad capacitor has very high resistance material used between its…

A: In this question,  1uF capacitor has very high resistance material used between its conducting…

Q: A pure element is connected across an AC signal. CH1 and CH2 measures the voltage and current,…

A:

Q: If the surface area of the plates of a capacitor is increased, which of the following will occur? A)…

A:

Q: Solve for the value of the capacitance (in nF unit) if R2 = 1057 ohms and Xc = 2365 ohms. Round your…

A:

Q: . A resistor in parallel with a capacitor absorbs 20 W when the combination is connected to a 240 –…

A: In the question, A resistor R in parallel with a capacitor C. This combination is connected to a 240…

Q: Air breaks down and conducts charge as a spark if the electric field magnitude exceeds…

A: Given E =3×106 Vm A =2×104 m2 C =75 μF

Q: Calculate the value of capacitance required to produce 110 Ω of reactance at 750 MHz. Round the…

A: Calculate the value of capacitance required? X =110 Ω of reactance Frequency f=750 MHz

Q: Calculate the 50 Hz inductive reactance at 1 m spacing in ohms/km of a cable consisting of 12 equal…

A:

Q: Given the inductance of 2.5 µH with a reactance of 400 Ω. What will be the value of the frequency?

A:

Q: All of the following statements are false about Proximity Effect EXCEPT O It decreases with…

A: Proximity effect - Unequal current distribution in two or more conductor placed near each other due…

Q: Research and explain the following topics and cite examples on each topics 1.) Capacitance of a…

A: Let the charge on the capacitors be Q and -Q on each of the plates. The separation between the…

Q: State the phase difference between voltage and current of a capacitor in an AC circuit with one…

A:

Q: Determine the voltage across capacitor #3 (C3)?   Select one: a. 7.2 volts b. 6.36 volts c. 5.65…

A:

Q: An inductor has an inductive reactance of 250 Ω when connected to a 60-Hz line. What will be the…

A:

Q: Dielectric capacitance between two surfaces depends on? Dielectric conductivity None of the choices…

A:

Q: 13.A 230-volt d-c source is suddenly applied to a series R-C circuit. (a) If the capacitor is…

A: In this question, we need to determine the voltage across the capacitor after t= 1.75tao and t=…

Q: motor with 1mH of inductance and an unknown internal resistance is connected to a 100V RMS 10kHz…

A:

Q: What is the effect of connecting a bigger capacitor in the circuit? Comment from the result obtained…

A:

Q: capacitor (Vc(0)=0 )that was initially empty was used in the circuits given below. How does the…

A: According to questio,

Q: Lenz stated, “A coil has an inductance of 1 _____ when a current change of 1 _____ per second…

A: Lenz's law states that, the direction of the electric current induced in a conductor by a changing…

Q: What effect (increase or decrease) would the following changes have on the inductance of a…

A: Let n = no. of turns of the coil L = average length of wire/coil(m) I = Current(amp) A = Area of…

Q: The capacitive reactance of a circuit is 60 ohms, when it is supplied with a 50 Hz supply. What will…

A: Given, Capacitive reactance, XC1=60 Ω Frequency, f1 = 50 Hz Capacitive reactance, XC2=? Frequency,…

Q: capacitor is connected to a 208-volt, 60-Hz power source. An ammeter indicates a current flow of…

A: The solution can be achieved as follows.

Q: Q9. Which of the following is one means by which energy or electrical noise can couple from one…

A: Coupling capacitors are used in electronic circuits to pass the desired AC signal and block unwanted…

Q: How would you read the value of capacitance and voltage rating in an electronic circuit or device if…

A: How would you read the value of capacitance and voltage rating in an electronic circuit or device if…

Q: A LRC electric circuit is conected in series has a voltage source of E(t)=20sin(10t) Volts, and a…

A: Fig: RLC circuit for t<0  initial charge on capacitor is 2 coulombs  Although…

Q: Suppose a piece of Pyrex glass is inserted between all the capacitors (see table 26.1). Explain (in…

A:

Q: If i have a coil with an inductance 0.14 H and a resistance of 12ohm is connected across a 110V ,…

A: In this question we discuss about how to make the current through coil and supply voltage in phase

Q: The ohmic resistance of a large magnetic contactor is measured to be 20 ohms. A 230 V 60 Hz is…

A: Given that, VS=230 volt , 60 HzL=?R=20Ωi(t)=3.2 A As per the given terms, the circuit is like:

Q: When a dielectric material is inserted between the parallel plates, what will happen to the value of…

A: In this question we will write effect of dielectric on capacitance....

Q: The current waveform for a capacitor is shown in the following figure. Determine the a) average…

A: AVERAGE VALUE: The average value is nothing but the ratio of total (net) area under the curve for…

Q: An inductor has an inductive reactance of 250 ohms when connected to a 60-Hz line. What will be the…

A: The solution can be achieved as follows.

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.