Answer / sajen soman

leading and lagging currents are not so much "currents" as
they are "situations" or "conditions" in an electrical
circuit. Reactive characteristics, if there are any, will
not let voltage and current be in phase in a circuit.
(Unless they are equal, and this will be true at only one
frequency.) In some circuits, current leads voltage (or
voltage lags current), and in other circuits, current lags
voltage (voltage leads current), depending on the circuit
and also on the frequency of the applied signal.

In a capacitor, current leads voltage, and in an inductor,
current lags voltage. This carries over to circuits that
exhibit primarily capacitive or inductive characteristics.
Additionally, reactance varies with frequency. As a given
circuit with inductance and capacitance is evaluated, at
some frequencies, it will appear capacitive, and current
will lead voltage. At other frequencies, the circuit will
appear inductive, and current will lag voltage. Only at a
frequency where the reactances are equal will the current
and voltage be in phase

How does a tertiary winding filter harmonic(espcially 3rd one) from entering into load system?

0 Answers  

---

what is mean by transition resistance of transformer?

0 Answers  

---

Define active filter?

0 Answers  

---

why put integration for capacitorand differation for inductance

1 Answers  

---

Transformers with dc supply

4 Answers  

---

what is MAR

1 Answers   NCC,

---

Differentiate between voltage and current feedback in amplifiers?

0 Answers  

---

how we calculate fault current& load factor or fault level&also the leakage current

1 Answers  

---

stand by earth fault protection (51G) for transformer rating 2000 kVA,Dyn11,33/0.400 V. LV NCT ratio and necessary resistor and metrosil values how to calculate

0 Answers  

---

what will happen if one of the phases from a 3-phase motor is disconnected?? stop/run at 2/3rd speed or run at same speed????

3 Answers  

---

what are the range of memory address in plc for L&T lx7 4A

0 Answers  

---

How to calculate the sag of OPGW during stringing???

0 Answers  

---