i have 2 motor of same rating. on no load condition one
motor take 1.6A but other motor is taking 4.8A. what is the
reason of this. please explain with proof.
Answer Posted / b.b. singh
one motor has connected in star then it taking 1.6A &
another is connected in delta so it taking 4.8A.
| Is This Answer Correct ? | 16 Yes | 1 No |
Post New Answer View All Answers
before synchronizing an alternator,power factor is leading ,why?
What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
Explain the purpose of inductor in an electric circuit?
What is the working mechanism of OLTC in Power Transformers????
What happen to the transformer if the OLTC frequently used for lower and raise occured 50times daily?
what maximum range of star & delta in hp or kw ?
How to test Alternator stability test for REF relay
Sate maximum power transfer theorem?
1.why are not using acb 33kv ht side? is there any problem 2.what is difference between acb,vcb,sf6 breackers? 3.what is the function of invertor and convertor in ups?
mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....
what is dc mator?types of dc motor?losses in dc motor?what is the mechanical,electrical and commercial efficiency of a dc motor?
what is KA rating and how can we choose switchgears on applications
Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT
How to check the cable fault / hv test of transformer cable.