Answer / bidu

inner part-carbon.
outer part-ceramic.

what is ATS & RING MAIN UNIT in Distribution System?And its Function.

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dear friends plz send link about reluctance & universal motor .thank u

4 Answers  

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in star delta starter current is 1/3times the delta value how?

2 Answers  

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Is potential difference materials property ..? if yes tnen how.. explain brifly.

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What is the use of centrifugal switch in 1phase induction motor? Why is it so called?

2 Answers  

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1. alternator has full load regulation of 4% when pf of the load is 0.8 lag, 1500 rpm. full load regulation of 1400 rpm for 0.8lag will be ________ ?? 2. torque angle of a sync m/c operating from a constt voltage bus is usually defined as space angle between _______ . 3. method most effective in finding out no load losses in large DC shunt motoris ______ . 4. current carrying capacity of fuse material depends on ______ . 5. coil has res. 10 ohm, inductance 1H. what wil be current after 0.1sec after switching on to a 500V DC SUPPL ? ? 6. effect of phase lag compensation on servo systems ___________ . 7. rotor of a dc machine is usually supported upon ______ . 8. DC motor is preferred to AC motor in which application ?? 9. 3 nos of 10:1 Xmer are connected in Star-Delta to supply a load at 230V.the supply voltage must be ______ . 10. voltage source produces max current in which circuit. 11. cal. power, if current and voltage are out of phase by 90 degree. 12. suitable length of Xmission line of power at 66 KV. 13. Which of the theorm helps in simple computation when the load across a ckt is varying ?? 14. what is the adopted line length for power Xmission of power by cables ??

5 Answers   TATA,

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why resistive load has unity power factor,inductive load lagging and capacitive load leading power factor?

3 Answers   OEG,

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What will happen if i used 11KV earth ht kit to 11 KV / 11 KV cable termination?

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can we use inductor for passing or blocking of AC or DC?

3 Answers   Moser Baer, NTPC,

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WHAT DO YOU MEAN THE DIFFERENT TYPE OF CURVES OF RELAY LIKE STANDARD INVERSE, VARY INVERSE, NORMAL INVERSE, LONG INVERSE ETC....

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I did oil BDV test of 1600 KVA trafo 20KV/400V as per IEC 156. Result is 1) 58 KV 2) 58 KV 3)40 KV 4) 50 KV 5) 58 KV 6) 18 KV. Avr is 47 KV. Can we say oil is still ok even in the 6th test BDV is 18 KV ?

1 Answers  

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in ceiling fan and table fan what is the rotating part and what is the stationary part?

5 Answers  

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