Ns=120f/p. what is 120?
Answer Posted / parth
Ns=120*f/p
There are no of pair of pole then p/2.
Ns=1/T in rpm then convert in to rps.
1/T=f.
Ns=60*2*f/p.
| Is This Answer Correct ? | 6 Yes | 2 No |
Post New Answer View All Answers
need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.
I am a possesor of c licence from 1993. I forgot to renew during the year 1998. During that time I was working at TNEB to till date. Is there any possibility to get renewed? or to apply for a new one?
What is touch potential and step potential?
what is destructive and non-destructive testing of welding
what is draiv work
at work i have a genertor/alternater what is the easyest way to work out if it is dc or ac?
At the starting of dc motor and syn.motor and induction motor high current flowing through the winding. Due to this the windings burnt out. To avoid this different types of starters are used. But incase of transformer what Will be used (At starting no emf is induced in the primary winding)?
how the works electronic energy meter?
Is potential difference materials property ..? if yes tnen how.. explain brifly.
While testing LA mast,What are the parameter limits ?
In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.
if i am in front of transmission line how to know that current direction without any equipment
Please tell me the power flow from pmg to main rotor of an alternator (Including AVR unit)?
How to know any size of cable if there are not written on cable? Answer must be theurical not by experience.
how to prepare the technical test