How can we measure the frequency of a rotor running in full
load condition? Explain the method of measuring.
Answer Posted / manikiran
Frequency of a rotating machine can be found by Stroboscope..
It makes use of Stroboscopic Effect.When the frequency of
the Incident light is equal to the rotating speed (measured
as frequency of the point moving ) it appears to be
static...and the corresponding speed gives the speed of the
machine..
Or it can also be measured by a tachogenrator...
Is This Answer Correct ? | 8 Yes | 3 No |
Post New Answer View All Answers
What does ampere turns shows?
what about the power of wattmeter at starting and loding?
Pls tell me whether we can use EN3A material for shafts of Permanent magnet alternator.What will be the effect of magnetic and nonmagnetic material for shafts on magnetic properties of PM rotor .
Installation resistance for whole installation of 16 kva & 25 KVA DTRA a) Between each conductor b) between conductor to earth c) installation resistance for each apparatus, each conductor to earth d) earth resistance for the system of earthing
what is the relationship between phase & neutral
what is meant by impulse voltage?
What about electrical Units. discrive in detail
Why the frequency of ac in india is 50 hz but in some other countries it is 60 hz.
HOW TO CALCULATE HV CABLE SIZING?
HOW WE CHOOSE EARTH'S POTENTIAL AS ZERO V?
what is diff btw electric,magnetic & eletromagnetic field
What is a parabolic signal?
What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.
what is DRP panels?
What is a surge supressor why its is used in synchronous generators