Answer / karthik_elec

we can calculate the performence and efficiency of machines
with out applying the loads.

Answer / raju

By OC test gives Core + Hysteresis loses and SC test gives
Total Copper losses.

Answer / jagan

oc test used to calculate core loss & sc to calculate
copper loss its helps to find efficiency

Answer / waseem ahmed

to find out core and coper loss

Answer / surendra

directly loading is avoided such that our equipment can be
tested most economically

what is the differnce b/w voltage and current

8 Answers   Steel Plant,

Why does inductor is connected to dc supply? or what is the role of an inductor when connected to DC source?

3 Answers   TCS, TRR,

how snubber circuit works to protect switching devices?

2 Answers   Electrotherm,

1. transformer design formula ? 2. how to calculate the primary turns and secondry turns ? 3. core types ? 4. how to find the primary current and secondry current ? 5. how to calculate the stacking factor ? 6. range of fulx density ?

2 Answers   Automation, Indian Railways, Mogora Cosmic,

what is the chemical name for oil that used in the transformer

2 Answers   NCC,

What is ideal IR values for ground and neutral.

0 Answers   Hindustan Power Projects,

Relay setting for earth fault of reciprocating and centrifugal compressor motor feeder.Setting will be different or same?

1 Answers   Reliance,

Which cable is use for rtcc control panel

0 Answers  

I want to know what is the short circuit level when 8 NOS 2000 kVA, 415v, 50hZ generator connected in paraller

1 Answers  

What will happen to the protection and metering, if the polarity of a single or two PT/PTs in three phase system is reversed? Please provide reference if any.

0 Answers   Mind Tree,

What is the Maximum Power generation capacity of a Synchronus Machine ??

0 Answers   ETA, NTPC,

how many typetesting of transformers?

8 Answers   ONGC,