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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.
