what is the difference between control transformer and Potential transformer (PT)?

1 Answers  

---

What is the difference between CT for protection and Ct for metering?

16 Answers   BirlaSoft,

---

What is corkscrew rule?

0 Answers  

---

why only violet glow appears in corona effect?

1 Answers  

---

a 3 phase slip ring induction motor is wound for 4 poles on stator and 6 poles on rotor; when 3 phase balanced voltage source at 50 hz is applied to motor it will run at a)1500rpm b)1000rpm c)750 rpm d)zero rpm

13 Answers   Essar, PSPCL, PSTCL,

---

In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?

1 Answers  

---

reason of capacitor failure or low voltage in alternator wtih 10kva dgset

0 Answers   adag,

---

what is the calculation of power factor?

4 Answers   GATE,

---

Types of tempering of energy meter?

1 Answers   Nespak,

---

if flow of electrons is current then why their direction are different???

1 Answers  

---

ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine

0 Answers  

---

We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?

0 Answers  

---