I completed DECE In the year 1995.Now i am working in a private company from last 10 years as an Electrical supervisor.The company having a 1000 KVA transformer.Now i try to apply "C" Licence. I am eligible or not.If not eligible,pls give solution.
Am using an electronic digital display to see the RPM of ABB ACS 550 drive, which is showing negative value when the motor & drive in stop mode but it is showing correct value during the run mode. can anyone help me out??
I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?
What is the pro & con of having 11kv & 33kv incoming, and
what is the adv & disadv. of converting from 11kv to 33kv.
what are factors to be consider to design a HT & LT motor?
what is positive , negative & zero equivalent system resistance
internally connection of photvoltic module
What is diode fuse ? How it is working?
there are cam operated switches - why we call cam
operated , What is cam ?
how to flameproof electrical motor on the shaft?
Can u tell me design of switch yard
mostly the questions were from machines... d.c. machines,
transformer, synchronous and induction all theory
paper........ few from power system... but the level of paper
what is the purpose of high speed earth switch in gas insulated substat
7- 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
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
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,……..,?