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3- What is the target from Zero Impedance, Single Phase Imp., S/C Imp. and magnetic balance tests?
13854-Why we measure the insulation resistance of main core and frame in spite of that must be connected with ground before energize the transformer?
3 99675- What is the task (function) of the excitation and isolation transformers in power plant? 6- What is the task (function) of LCI (A), LCI (B) and LCI (COS) in power plant? : LCI (A) and LCI(B) are load commutating inverter for generator turbine starting. , LCI (COS) is load commutating inverter change over switch
33547- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?
1767How to calculate cable sizes in sq.mm. with using motor KW? Any formula there?
Aswani Properties, BRB Cable, Construction, Hitachi, L&T, Microcool Systems, Nahar, NWPF, Reliance, Renault, Saha Bright Polytech, SGH, TATA, Techno Electric and Engineering, TFIL, Thermax,
18 300353I need the recommended size for a 3 phase transformer at 13.8 KV Primary and connected loads of 3000 kVA at 4200 volts and 2375 kVA @ 480 volts AC.
1496what happen if i connect DYn11 and DYn1 vector group transformer in parrallel?other things are same like votage ration,x/r ratiob etc...
4 30814is there any difference between protection C.T and measuring C.T?if yes then what is the difference?
4 11007i m a frsh chemical engineer now i m confuse to attend the interview so anybody pls send model question papers to this christ_vivek33@yahoo.com
HPCL,
1718
which collection enforces type safety?
Define thickener?
what should be the no load current for 3 phase ac motors ranging from 5 kw to 1000kw?
what is d check in dg 1500kva
what is limitation of auto transformer?
What is the type of earth fault protection used in battery? explain.
why & what is perchatage we are using fly ash in concrete?
which is the cheapest type of flooring (say for using for 6 months in a factory building & dismantling it)?
Why collecting electrode of ESP to be earthed
For the second gear in a synchromesh system, the drive transfer will be through a) U1, U2, C, F2, and splines b) U1, U2, C, F1, and splines c) U1, U3, D, F3, and splines d) U1, U4, U5, E, F2, and splines
1.ZEBRA conductor(large size) 2.KUNDHA conductor( small size ) 3.panther conductor(very small ) 4.lepard conductor (very very small)
For a type a chopper (first quadrant), express the following variables as a function of vs, r and duty cycle in case the load is resistive average output voltage and current?
Tell me what is chroma?
what is the productivity in aluminium shuttering per day
Which LED light is better for fire safety? 24 V DC or 220 VAC? (In fireproof factory Godown)
