Answer / natha

pf leading or lagging both are undesired.practice generally is to maintain near unity pf which means full utilization of power generated.
If a purely resistive load is connected to a power supply, current and voltage will change polarity in step, the power factor will be unity (1), and the electrical energy flows in a single direction across the network in each cycle. Inductive loads such as transformers and motors (any type of wound coil) consume reactive power with current waveform lagging the voltage. Capacitive loads such as capacitor banks or buried cable generate reactive power with current phase leading the voltage. Both types of loads will absorb energy during part of the AC cycle, which is stored in the device's magnetic or electric field, only to return this energy back to the source during the rest of the cycle.

Answer / devendra verma

No disadvantage

what the Microsoft .NET framework is?

0 Answers  

---

How to select the gauge of wire for winding of motors? How to select number of turns for winding of three phase induction motor?

0 Answers   npcc,

---

how one can know the charging time, discharging time of a 12 VDC battery ? If i have a battery of 12 VDC , 4.0 AH , how long will it take to charge from a charger (power supply) of input 220 V , Output 15 V and output current of 3000 mA and how long will it take to discharge whether using or not ? How much backup will it give ?

1 Answers   ONGC,

---

what is difference between neutral& grounding?

6 Answers  

---

how Local Breaker Backup relay working?

1 Answers  

---

if we connect a ohmmeter across shorted capacitor .what will be the reading..will it be zero or infinity

2 Answers  

---

Why motor is not calculated in kva, whereas transormers are calculated in kva

2 Answers  

---

When do you use a VFD motor?

3 Answers  

---

how capacitor buield up the voltage

3 Answers  

---

Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir

0 Answers  

---

when we connect the capacitor bank in series

2 Answers  

---

What difference between ref protection and differential protection ?

0 Answers   EPC, INEL Power System Engineers,

---