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In pakistan appliances work on 220v at 50hz and in us appliances work on 110v at 60hz what is basic theory to explain it
1 3939As per standard, transformer body earthing and other Equipment earthing (Equipment earthing) did not connect. but in LT side termination we are doing metal glanding in both side Transformer to PCC Panel through armoured cable, now X'mer body earthing and PCC Pane earthing (Equipment earthing) both are connect.is this safe for X'mer or other equipment?
1737Assuming that a dedicated neutral earthing transformer is provided for each GT generator, when the two generators are running in parallel, has consideration been given that the earth fault current from one generator stator winding be split between the two neutral earthing transformers? If so, what adverse impact will this have on the operation of the 59N and 27TN devices?
1621Explain with example of functional requirements of protection relay in terms reliability, selectivity, sensitivity
NCC,
1851Why choke coil is connected in series with starter in tubelight??why starter is connected in parallel to tubelight??
3337Post New Electrical Engineering Questions
How to calculate the fuel consumption for 600kva DG genset which connecting with 25%load?
What is resistance of 50meters, 16sq.mm, single core copper cable?
how did the testing of protection relays done through current injection
How to calculat the ratio of HT\LT in energy meter
54 Comments Alok and Bhanu play the following min-max game. Given the expression N = 38 + X*(Y – Z) where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be?
How to check the cable fault / hv test of transformer cable.
how to calculate the fault in substation
what is the use of commutator in dc motor if we supply ac ? commutator is used to convert ac to dc.and it is used to arrange the flux in unidirectional in case of dc supply. if we give ac as supply to dc motor what is the use of commutator?
How servo stabilizer works.
Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not
What is the Good Earth resistance value of G.I & Cu. Chemical Earthing & Normal Pipe Earthing?
how we decide scurt (disc) of insulator with respect to kv rating
Can we use Ccapacitive voltage transformer directly for metering purpose?
what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?
will 1050kva DG set withstand for back charge of 16MVA transformer
