BEE ENGINEERING AC CIRCUIT

                                                      

                           Unit 2: AC CIRCUIT 

1) Definition of true power.

actual power consumed in the AC circuit is called real power. If v and i

RMS values are for voltage and current respectively and theta is the angle of stage

between V and I, and then

2) Select the Power factor.

the power factor is the cosine of the angle between the effort and current.

COS (theta) = resistance/resistance

kos(theta) =

Real power/virtual power

3) What are the three energy types used in the circuit?

* Actual (or) active force

P=VI cos(theta)

* Interactive pop

Q=VI sin(theta)

* Virtual power

X=VI.

4) Select Interactive Strength.

The energy consumed by a pure reactor [x(L) or x(C)] in a AC circuit is

so-called reactive force. The unit is VAR.

Q=VI sin(theta)

5) Bandwidth Selection and Factor Q.

Bandwidth:

Broadband is defined as the difference between the upper frequency and the lower

abrupt

beta=f (2)-f (1)

Beta = R/2*pi*L (rad/sec)

Quality factor:

A quality factor is the percentage of reactive energy in the inducer capacitor (or

to the actual power of appearing in a series using the file (or) capacitor.

Q= 2*pi*Maximum Power Stored/Distributed per Cycle

6) Determination and appropriate conditions for resonance.

AC electrical circuit has echo if you move with pure resistance

circuit. The total withdrawal of current by a circuit shall then be in application

Voltage and power factor are the unit. Ringing is a state in RLC

A circuit where the capacitive and reactivity capability is of equal size [x(L)]

or c)]. which leads to pure resistance.

7) What is the relationship between line voltage and STAR voltage Delta connectivity?

star join, V(L) = 1.732V(ph)

For delta connectivity, V(L) =v(ph).

were, v(L) line voltage

V(ph) phase voltage.

   Introduction:

*AC and voltage sources are widely used in practice. Unlike a DC source, the AC source gives

voltage that varies with time. Not only does voltage change in size, it changes in direction.

*The time taken to complete a single cycle is called the quality time interval. The number of these cycles is accurate

g/s is called frequency.

f=1/t (hertz).

*The maximum positive (or) negative value of the replacement quantity is called capacity.

 

Average Value:

Average value=region within current cycle/full rule[period].

RMS Value:

And the effective value of AC is that DC value that produces the same temperature as this

AC output when experiencing the same resistance to the same time period.

Crest (or peak) value:

Crest = maximum value/RMS

sinusoidal voltage:

E = E(m)sin*omega*t

V = V(m)sin*omega*t

i = i(m)sin*omega*t

omega = 2*pi*f

V = V(m)sin*2*pi*f*t

Phase difference:

i(1) = i(m) sin*omega*t

i(2) = i(m)sin(omega*t-phi)

i(3) = i(m)sin (omega*t + phi)

Real power:

actual power consumed in the AC circuit is called real power. If V and I are RMS values for voltage and current

respectively and PHI is the angle of stage between V and I.

P = VI cos(phi)

Interactive power:

Energy consumed by a pure reactor [X(L) or X(C)] in the AC circuit is called reactive.

Q = VI sin(phi) 

Virtual power:

This results from the RMS value of voltage and the applicable circular current.

x is equal to sixth 

Power factor:

A power coefficient is a cosine of the phase between voltage and current.

COS (phi) = resistance/resistance

COS (phi) = Actual/Virtual Power

Trigger:

The circuit AC input voltage is fed by a net inducer.

V = V(m)sin*omega*t 

* Whenever an alternative voltage is applied to a purely induced impending event, a change in flow occurs. Because of this

Flow variation (a) induced voltage on the inducer in proportion to the current rate of change.

V = L*di/dt

* Voltage and current wave models of a pure catalyst load are fed from a AC source. Therefore, current is said to be late

90 (deg) for Voltage.

Condenser:

* A capacitor is a ring element, such as a catalyst, which stores energy during periods of time and returns the comb

and in the others.

* The capacitor shall be composed of two parallel layers separated by an insulating medium.

Change the capacitor at any moment

q = cv

i = dq/dt

i = omega*c*v(m)*cos*omega*t

x(c) = 1/2*pi*f*c

RC series management:

Resistance and intensity are connected in a chain.

Z = R-JX(C)

phase angle = 2 (inverse)*x(c)/r [lead]

power coefficient (phi) = cos(phi) = r/z

Virtual power = 6

True Power (P)= VI cos(phi)

Reactive Power (Q)= VI sin(phi)

RL series management:

* The resistor and inductor are connected in a string.

Z = R+JX(L)

Z = V/I

phase angle = 2 (inverse)*x(L)/r

power coefficient = cos(phi)[lag] = r/z

Virtual power = 6

True Power (P)= VI cos(phi)

Reactive Power (Q)= VI sin(phi)

RLC series management:

Total RMS v = i[R+J(X(L)-X(C)]

phi = tan (inverted)*[x(L)-x(C)]/R

V = IZ; I = v/z

Virtual power = 6

True Power (P)= VI cos(phi)

Reactive Power (Q)= VI sin(phi)

Response:

* AC Circle is considered to be reversible if it acts as a purely resistant circle. Total current pulled by

The circuit is next in line with the applied voltage and the power coefficient is the unit.

* Response is a state in the RLC circle where response and interactivity are of equal size

(h) This leads to pure resistance.

* The feedback loop is useful for building filters and is used in many applications.

Types:

* Sequential resonance

* Parallel resonance

Important Criteria:

* Response frequency [f(r)]

* Half frequency of energy [f(1),f(2)]

* Bandwidth [beta]

* Quality factor [Q]

Sequence response:

* Reluctantly, prevention consists only of a resistance element.

* The current will reach the maximum given that the minimum is the total barrier.

* Voltage and current are in a phase. Maximum strength occurs at an echo because the force factor is the unit.

Response frequency:

The frequency at which a response occurs is the frequency at which a condition known also as a center frequency occurs.

 Half-energy frequency:

The frequencies of half the power are the frequency when the output voltage (or) current voltage is reduced by

factor of maximum value. Also known as deterministic frequencies.

Bandwidth:

Bandwidth is defined as the difference between the frequencies of half the energy consumption.

(or)

Bandwidth is defined by the frequency difference between the upper frequency [f(2)] and the lower frequency

(f) [1].

Quality factor:

The quality coefficient (Q) is the ratio of reactive energy in inducer capacitor (or) to real energy in resale

in a series with