What happen when ct secondary are open circuited? why same thing is not happen in ordinary transformer?
derive DC RMS value for half wave rectifier?
By just seeing a transmission tower, how can we knew the voltage it carries..?[110kv, 220kv, 400kv...]???
what do you mean by cl PS CTs? What are technical details required for it's manufacturing?1 2575
when voltage increases current decreases & vice versa why it is so?3 3468
What is meant by inverse definite mean time (IDMT)& definitemean time (DMT)?5 31719
what is droop control?
what do u understand about FACTS? how they are useful?
what is significance of B-H curve? how it differs form ordinary transformers to Amorphous Transformer?
explain with diagram how to protect transformers and substations from over current with help of CT's?
how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?1849
what is resistance?5 3760
What is the formula to find out two phase active & reactive power1224
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 ?
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 ?