why the impedence of the transformer is expressed in percentage?
Answer Posted / afsal
Percentage impedance is the ratio of voltage drop on full load due to winding resistance and leakage reactance to the rated voltage of the transformer.
Z%= Vd/Vr *100
this can varied at the design stage by varying voltage per turns and geometrical size of the windings.
Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
If the Brush of DC motor is shifted by 90 deg, then what happens to voltage and torque? Both voltage and torque are zero. how to justify the answer?
I am an American living in Vietnam and I have recently gotten a refrigerator from Japan and it is rated for 100 vac, but the power here is 220 so I bought a voltage stabilizer it has a 1 kva output rating. Can you please tell me what the amperage is? I'm confused and without a working fridge.
What was the Dg set radiator and lube oil temperatures trip in ACB
Draw the line diagram of diffretial relay connected to transformer?
what is a synchronizing lamp ?
how much allowable resistance that can be difference in motor all coils?
What is 100% protection of generator? Why 100% is not used but 95% is generally used?
What is meant by sag?
whit is 33kv power 300*300 cable full current with formula
How would your past experience translate into success in this job?
what is the use of static frequency converter and static excitation equipment? and where it is employed? for what?
State the methods of improving power factor?
how to calculate the conductor size for certain KV transmission line and distribution line?
how u select control transformer for a mccb panels or any panels?for expample we hav 440 volts maim supply and control volts is 230v?
What is instrumental error?