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why Y CONNECTION IS BETTER INTERMS OF EFFICIENCY AND P.F FOR A LAOD LESS THAN 40% AND WHY AFTER DELTA IS BETTER FOR > 40%
1950what is the relation between the size of the machine and the frequency? (when the frequency increases the size of machine will increase,why?)
2 5091can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?
2049Post New Electrical Engineering Questions
How we can calculate the life of Lead acid battery
How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula? Equate Petrochemical 0 1 how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec. 0 1 What will happened. if we feed 3phase supplay to the stater with out insert the rotor. How much current will flow through the stater winnding? Equate Petrochemical 0 1 What is required of exietation to the alternater. 0 1 why star point of HT motor not earthed? Equate Petrochemical 0 1 Why we are getting low voltage in star connection? Equate Petrochemical 0 2 What's ND relay & it's functions? Equate Petrochemical 0 2 How instantanious short circuit current is calculated? its formula? Equate Petrochemical 0 2 What is servo Motor? What's the advantages of this motor over Induction motor? Equate Petrochemical 0 2 What is core CT & it's function? Equate Petrochemical 0 3 what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY L & T 0 4 What is required of exietation to the alternater. KNB 1 23 what is the design voltage for 6.6KV 2000 KVAR HT capacitor? Consultancy 0 3 Pls explain about vfd control?Where it is used, Give some example? siemens 1 22 Please explain me abt PQ diagaram in the power sector. 0 9
how to calculate the surge level of surge suppressors related to the SF6 cicuit breakers?
how to calculate the mesh earth network resistance in such substation, is there any recommended resistance values with references , thanks!
What is FM200 Gas??Applications........
What is the function of RCBO? What are the different sensitivity ratings & each application?
What will be electrical cost per sqft for IT building (basebuild and fitout)and for residential township?
What difference between ref protection and differential protection ?
What is dc current source? Differentiate between ideal and non ideal current sources?
Which test will be more severe for VCB?
in a simple IDMT relay we use neutral point of ct for earth fault then what is the requirement of neutral ct and cbct?
What are the advantages of speed control using thyristor?
why we use four type of phase angle difference between pimary & secondry winding of a transformer & where we use them?
can any one tell in easy method for circulating current ??
What is meant by Im=30mA@Vk/2. How to know the kee point voltage for CT design
