A resistor and a capacitor are connected in series with a variable inductor. When the circuit is connected to a 240 – V, 50 – Hz supply, the maximum current given by varying the inductance is 0.5 A. At this current, the voltage across the capacitor is 250 V.

Q: Q1 (a) (b) (c) State the meaning of primary cells. What is the 3 factors affecting capacitance…

A: Cells- It is the device that is used for the conversion of  chemical energy into electrical energy…

Q: As discussed in your reading material, the MAIN reason for calculating a capacitance value is to…

A: (i) The main reason for calculating capacitance value is to improve power factor  (ii)  Most…

Q: The network Nc shown below in Figure 1.99(a) contains a combination of scaled capaci- tors in series…

A: When capacitors are connected in parallel their equivalent value adds up and when capacitors are…

Q: An uncharged capacitor and a resistor are connected in series to a battery, as shown in the figure.…

A:

Q: 12. Which of the following not TRUE? a. A capacitor is an open circuit to de. b. The current on a…

A: In this question we need to check which statement is not true.

Q: 4. For the circuit shown in Figure (4.a): i) a) Find the voltage across the capacitor in polar form.…

A: In this solution we discuss about current division rule, equivalent impedance calculation &…

Q: 4. A 100 µF capacitor is connected in series with a 500 V DC voltmeter across a 400 V DC supply. The…

A: In this question,  We need to determine the time constant of the given circuit.  We know time…

Q: An inductor is "charged" to some value, then connected in series with a 1002 resistor and allowed to…

A: Step 1:

Q: Why a capacitor of capacitance C is considered open circuit for dc?

A: The impedance of a capacitor of capacitance C can be expressed as

Q: A capacitor C is connected in series with a 40 Ohm resistor across a supply of frequency 60 Hz. A…

A: Note :- As per guidelines we are supposed to answer only first 3_sub-parts. So I request you to post…

Q: A 100uf capacitor and a3.6kohm are connected in series. How long will it take for the capacitor to…

A:

Q: 4- What is form factor and peak factor? 5- When do we get maximum energy from a set of capacitors?…

A: We have to define form factor and peak factor.

Q: a) The current through a pure capacitor is given by i  = 28.28cos(314t). Derive an expression for…

A: Since (a) and (b) are 2 completely different problems, as per the guidelines, the first problem has…

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.