Answer / hari

8.5Ton x 1.2=10.5kw
so one hour runing-10.5 units

Answer / saravana

13.6units

why dc exicitaion used in ac motor....?

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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When we need start the motor by method of star delta which size (KW or HP)motor should must be operate in Star Delta Method,

3 Answers  

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how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

0 Answers   Tyco,

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what is the diff between VCB & ABCB breaker in substaions? explain the operating priciples of VCB & ABCB

1 Answers  

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like the transformer another electrical static device which operate on same priencipal?

13 Answers   Power Grid, Vishal Transformers,

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In case of any eventuality, who is your next of kin?

2 Answers   Edison, Foster Wheeler, GE, GE Energy, HP, Infosys, Koch Industries, Roper Industries, Siemens,

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Please explain open transition and closed transistion system in Star delta Starter?and also the state difference of both?

4 Answers  

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Which element is highly conducting coppoer or gold?

3 Answers  

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3 phase induction motor rotor field rotate at synchronous speed w.r.t ?

3 Answers  

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How can we calculate the KVA rating of a Distribution transformer from its core details?

0 Answers   ABB,

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why restricted earth fault protection can not operate for phase faults??as there will be a current in secondary of ct,when a phase fault occurs!

1 Answers   GMR,

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