in 132 kv substation ligtning arrestor(120 kv) connected to line. but line voltage comes to 132 kv, it operate or not???
4 16811voltage of a ckt is measured by volt meter having an input impedence camparable with the out put impedance of the ckt Eror caused is 1. Gross Error 2. Errors due to lloading effect
GATE,
2 4265when the control mechanism is present for an ammeter(1-10A) and 1A current is apllied what will be the reading of the meter?
GATE,
2 4615Relay setting for earth fault of reciprocating and centrifugal compressor motor feeder.Setting will be different or same?
1 4055The error in a single phase energy meter where pressure coil lags behind applied voltage by 88 degrees and pf is 1) upf 2).5lag
GATE,
1 4663Post New Electrical Engineering Questions
Keywords: Die, Card, Coin, B/N 2 To 12
How I can Compare 120v/60Hz versus 220v/50Hz ? Please tell me both advantage and disadvantage ......
What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer
difference between high and low impedance BUS BAR relay??
How can we findout the maximum efficiancy of Transformer? At which load?
What Should be the value of Vector Surge angle at Tripping and how to calculate it?
what is the best transformer oil breakdown voltage?
what is acceptable leakage current for 33kv cable while doing high voltage test for cable? how to calaulate the leakage current for 33kv or any rated cable?
Why ground terminal is used in pot meter 10k ohms
what is the difference between electrical and electronic choke?
How many types of electrical earthing are there?
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 power plant? 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 in transformers? 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,……..,?
how does it help for selection of a transformer.
1.What is captive power plant? 2.What is national grid?Give brief idea.
how do you test tachos and servos