Answer / hanupowergrid

Fans use capacitor-run induction motors. Since a fan is expected to be operated just by the flick of a switch, it has to employ a continuous-rating capacitor in series with its auxiliary winding, which stays energizerd as long as the fan runs. The capacitor used is paper type or oil type.

10Hp, 3-phase, 415v, 50Hz induction motor. The above motor is to run on Star-Delta connection, so how do i make following hardware selection 1) MCB, 2) Contactor, 3) Wire Gage (Depending on P-P current or Line Current), 4) OLR, Please tell in detail how to do the above, so as to get the ans. of it even if the Hp rating changes.

1 Answers   Engro,

---

why chock were used in old tubelights but are not newest tubelights?

0 Answers  

---

I want to know the principle of rotating flux transformer.

1 Answers  

---

What is FM 200?

2 Answers   Dalkia,

---

what is a vector protection in transformer

0 Answers  

---

we all know voltage is a force(emf), and the force always devides if 2 or more than2 loads are there but why does the voltage remains same is parallel, it must devide na ???

0 Answers   NTPC,

---

what is slip?

3 Answers  

---

When Alarm report at LED,Alarm volatge is 11-13 Volt But LED is of 3 volt.then why not it burn?

0 Answers  

---

In UPS, battery connections if parallel connection given, what will happen?

2 Answers  

---

How would we calculate the no of earthing pits required for motor /panel

5 Answers   APGenco, National Engineering Industries, Practical Viva Questions,

---

how the synchronizing is obtained at bus couplers in grid substation? (because there we cannot change the frequency in one of transmission lines like in generator synchronization)

0 Answers  

---

what are the main hormonics in ac?

1 Answers  

---