Determine capacitance of capacitor, Electrical Engineering

Determine Capacitance of capacitor:

A 20 Ω resistor is connected in series with a coil, a capacitor and an ammeter across a 25 V variable frequency supply. While the frequency is 400 Hz, the current is at its maximum value of 0.5 A and potential difference across the capacitor is 150 V. Determine:

1. Capacitance of capacitor, and

2. Resistance and inductance of coil.

1899_Determine Capacitance of capacitor.png

Figure

Solution

 (a) Let capacitance = C farad

Resonant frequency, f0 = 400 Hz

Capacitive reactance, X C =1 / ωC =   1 / (2π × 400 × C) = (1/800π × C) Ω

Voltage across capacity = Im XC = 150 V

                                         Im = 0.5 A

∴          0.5 / 800π C = 150

    C =   0.5 / (800 ×π × 150)

= 1.3263 × 10- 6 F

or         C = 1.3263 μF

 (b)       Let, RL and L be the resistance and inductance of coil respectively

Current, I m      =          V/ (R + RL)

                    0.5 = 25 / 20 + RL (?Applied voltage V = 25 V)

                        RL = 30 Ω

Posted Date: 2/5/2013 1:53:20 AM | Location : United States







Related Discussions:- Determine capacitance of capacitor, Assignment Help, Ask Question on Determine capacitance of capacitor, Get Answer, Expert's Help, Determine capacitance of capacitor Discussions

Write discussion on Determine capacitance of capacitor
Your posts are moderated
Related Questions
Q. Show the procedure of Octal to Decimal Conversion? To convert from Octal to Decimal, multiply the value in every position by its Octal weight and add each value. Using the v

explain the application of the Si,zener,and LED diodes

Q. Determine v, i, and the power delivered to elements in the network given in Figure. Check whether conservation of power is satisfied by the circuit.

i dont understand why equalizer connection is not used in wave windings?


Programming languages As we  have seen  the evolution of computer  hardware  similarly  programming  languages also  have their  history  of development from  machine  language

why we plot graph to find bandwidth is drawn b/w av/avmax v/s frequency not av v/s frequency?

banking system is the collection of financial entities, infrastructure and practices which support financial transactions . system tech is a software system to handle their transa


how unbalanced effect in wave winding is considered to be balanced?