Answer / dkmathur

1) Phi is the phase angle between V & I and Cos phi is the
power Factor.

2) KW/KVA is also power Factor i.e. Power factor is the
ratio between KW and KVA, That is why phi comes in Power
Triangle.

Hi Everyone ! My Name is Hakim ullah khan please i need formula of Cable Rating because i want to calculate by self without check any Table Chart... Thank you.....

0 Answers  

---

how did the testing of protection relays done through current injection

0 Answers   Bhel,

---

what is the use of excitation transformer in LAVT PANEL?

2 Answers  

---

If we need4× 50mm sq cable but it's not available so we can pull 4×25mm sq 2cables

0 Answers   ABC,

---

what is working of Master trip relay ?

9 Answers  

---

sugest any typical project ?

0 Answers  

---

11Kv Dog conductor 6/0.186 formula Line Losses ? Length 4.85Km amper ..? 52 Pole Max Load 3200Kw

1 Answers  

---

1)Why electric shock is feel ?? n in a Electric Train why we didnt feel that ? 2)What is the reason for transformer Noise ?? 3)What is relation b/w Transmission Lines & Communication Lines ? 4)Which material is used for making Transformer oil & How u measure its dielectric strength & Name the test ?

14 Answers   NTPC, Tata Power,

---

An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm

0 Answers  

---

explain why core loss of a transformer is almost constant under different load conditions when connected across a constant voltage and constant frequency.

0 Answers   MPPGCL Madhya Pradesh Power Generating Company Ltd,

---

in Contactor opearation Why there is a difference in the values of the operate and release voltage in case AC supply

0 Answers  

---

WHY HUMMING SOUND OCCURED IN HT TRANSMMISSION LINES?

6 Answers  

---