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Question Asked @ Answers Views     Select
How to do cable sizing calculation for 750 A Neutral Earthing resistor for 33kv. the 33kv cable going to swbd. is 630mm2 3 runs.    0  2256
what is the voltage between nutral and earth?    2  2146
how can we connect the capacitor bank to improve the power factor?    5  4143
What is A.C Resistance for Earthing ?    2  1995
How to Measure A.C Resistance for Earthing ?    2  1793
What is difference between A.C & D.C Resistance ?    4  3165
what is the formula for calculating of dielectric strength of transformer oil. bhel   2  4500
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 ?? tata   5  2327
instead of neutral can we use earth/ground to flow the current in the circuit infosys   2  3110
The ratio of white balls and black balls is 1:2. If 9 gray balls is added it becomes 2:4:3. Then what is number of black balls ? cts   3  3622
What is Isolation Current transformer and what purpose to use it in REF relay ?    1  1426
In Designing the rating & accessories of a MCCB how to choose the type of releases..means what is the basis for selecting, thermal magnetic, electromagnetic & microprocessr based releases    0  435
Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc.    11  10751
what happen when generator neutral supply and transformer neutral supply linked    3  2327
What should be the percentage increase in length of the dead end clamp for bus bar conductor (Hawthorn) after hydraulic pressing and what should be the applied pressure?    0  261
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Un-Answered Questions
 
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how to design step down 12 V, 1mA small transformer from 220 V AC? Because according to VI relation and power transfer it results bulky... 551
Pleae send me last 5 years of Question book about RRB chennai. 356
IN 1000kva transformer where the oil and winding temperature sensors is connected 696
1.what is difference between ATS & STS main use. 2.what is difference between ACB& VCB With symobles,and main partes, manimum range. 3.How many types of relays and main function. 1767
why would amp draw on neutral wire be as much as amp draw on the hot leg. 343
what kvrah y we need to take the readind of that 324
What is the capacitance values of 132,220,400 & 765 kV current transformer 206
Why we are going for converter transformers for DC drives application instead of distribution transformer? 390
After synchronization with grid what is the demand value QKVAR and how we will maintain that? 371
why in a swquence network representation, the negetive sequence generated voltage is taken as zero? 247
Haw to check conductivity of budbar 78
How to check the thermocouple is correctly connected to cable for K type? (i,e positive pole is connected to non magnetic conductor and negative pole is connected to magnetic conductor) 53
how we sesign the transformer give some specifion regarding design of transformers 257
Whether it is possible to measure energy at the input of rectifier transformer (12 pulse with very high odd harmonics) 258
In DC generator, we use commutator, having no. of segments. Then how it is possible to get a half wave of voltage and current for half rotation of armature? 420
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