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 mulplying factor of trivector meter (11kv) having ct ratio 100/5 amp.

2 Answers  

what questions will be asked for 11/33KV licence interview APSEB hyderabad. Can any one share question and answers.

0 Answers  

What's the difference between a generator using 50Hz and 60Hz? When do we need to use a generator 50Hz and 60Hz?

3 Answers  

How do you protect your appliances from harm in case of neutral failure in a three phase power supply set up.

4 Answers  

Construction of ac motor?

1 Answers  

Can anybody please refer the best and simple book for about Protection relays and in detail of all its protection ?

0 Answers  

How to convert KW to KVA or KVAR OR kvar/kva to kw?

8 Answers  

when we connect a CT in the line will there be any loses in the line due to the mutual inductance of the CT.

1 Answers  

1. If we apply dc supply to the primary winding of transformer it will be burnt out. similarly dc supply is given to field winding of syn. motor and armature winding of dc motor, they are safe. (Remember both windings inductive nature) what is the reason behind that?

2 Answers  

what is the formula for converting dc power(watt) to ac power (watt)?

3 Answers   ABB,

During the main stator winding insulation testing (phase to ground)of 11kv alternator (Lerysomer) i found 0 and resistance with multimeter and found 20 killo ohm while the power cables are connected both end (Generator & VCB). In VCB PT (Potential transformer) are connected. Please any body explain that method of insulation is correct or not? also describe of PT connections

1 Answers   Private,

What types of high speed CMOS circuits have you designed?

0 Answers   Ansal Housing, IBM, Intel,