What happen when ct secondary are open circuited? why same thing is not happen in ordinary transformer?
BARC,
3 5370By just seeing a transmission tower, how can we knew the voltage it carries..?[110kv, 220kv, 400kv...]???
KSEB,
5 5881what is significance of B-H curve? how it differs form ordinary transformers to Amorphous Transformer?
BARC,
2 20067explain with diagram how to protect transformers and substations from over current with help of CT's?
BARC,
1084how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?
Asahi, BARC, K-Electric,
1849Post New Electrical Engineering Questions
Is RTCC panel needs any control supply.
What are the advantages of stationary armature and rotating field system?
ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?
can we use trip light with bus coupler?
State the points to be considered for selecting a particular type wiring.
Compare salient pole and cylindrical rotor machines.
How the circuit breaker is selected for Induction motor of 100 kW, 415 volt, 0.85 power factor, 0.95 efficiency ?
Define branch?
Is it possible to make a 5P10/ CT Ratio 50/1A Burden 5VA
Draw the equivalent circuit of crystal oscillator?
Importance of fault current in power transformers and how to monitor the same? How is it different from winding temperature?
How to calculate of maximum demand if given 628kw, 785kva, 0.8 p.f.
What shall be the secondary output voltage if the primary winding of a 220/6V, 50 Hz transformer is energized by an 110V, 60 Hz supply?
Discribe type of fault in DOL and stardelta startor.
what are the stresses in circuit breakers ?
