Answer / jaadeesh

N=(120*f)/p

Answer / mr.engineer

If it has a direct coupling with the motor .Use this formula
n=(120*frequency)/(2*number of Poles.)

Number of poles:You can get it from name motor name plate .
Frequency:50Hz or 60hz depends on your system.

(Or you can see Motor Speed and fan speed will be same as
motor speed)

whose motors self starting synchronous or Induction motor?give fact reason why not self starting another mother

2 Answers  

---

What is the equipment used to control the generator output?

3 Answers  

---

why effective resistance should be more than static resistance in transmission line?

0 Answers  

---

what is the difference between megger and earth tester?

28 Answers   Ashok Leyland, IOCL, RRL,

---

If a motor of 8.5 KW with same load and using in both Star & Delta one by one,then which will take more current in star connected or in delta connected

4 Answers  

---

What are the industrial applications of Superhetrodyne Receivers ? What are merits & De-merits of SuperHeterodyne Receivers ?

1 Answers   Airtel,

---

IT IS SAID THAT THE OLTC OPERATION SHOULD NOT BE PERFORMED WHEN THE TRANSFORMER IS GENERATION TRANSFOREMR/STEP UP MODE. WHY IS IT SO?

1 Answers   MSETCL Maharashtra State Electricity Transmission Co Ltd,

---

How many distance in distribution pole OR 33Kv line pole

2 Answers   Sail,

---

What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

0 Answers  

---

What is voltage 

4 Answers  

---

what is the setting of locked rotor in HT motor ? (answer expecting in percentage)

0 Answers  

---

What is Electrical Grade Aluminum for Tubular BusBars. i am confused between 6063 and T6 or T5 and what is BS 2898 and BS 159?

0 Answers  

---