8. A DYNAMOMETER TYPE WATTMETER RESPONDS TO THE.......

9284

hi this is hema can anyone mail me previous years questions for the APPSC-A.E.E (in electrical stream.) ......thank u.

1919

how to failure indution motor insulation & how to improve heat in motor insulation

1887

In a voltage-controlled current source A A current booster is never used B The load is always floated C A stiff current source drives the load D The load current equals Isc

1886

Advantages/Disadvantages of earthing of neutral bus on MSB instead of separate neutral earthing for transformer/DG sets feeding to MSB

2797

When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

1271

What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

1452

What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?

2278

WHAT IS SUBSTATION & ACCORDING TO VOLTAGE HT,EHT SUBSTATION EXPLAIN IT

3169

block diagram of 2 ups system connected in parallel mode?

2079

How to check 11000/1.732 to 110/1.732 Potentila transformer (PT)?

2206

calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.

3566

What is the equivalent circuit of a transformer and its vector diagram?

2685

what id a dry type transformers and its function ?

1756

Describe the colour rendering properties of i) tungsten filament lamps ii) tubular fluorescent lamp

3138