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for 5KW resistive load can anyone please suggest me whether to go for UPS/Inverter or Generator depending upon cost calulations
2107hi my name is saikiran ,iam an betch in electronic and communication i got i-20 in npu and iam having 24 backogs gre 860 ielts 5.5,how i should define my seif so please give me appropriate answer i need some help
2208I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?
1897why we not connect the 12 V batteries in parallel to get the more backup supply for an UPS ? wheter off line or on line UPS ?
2 4854How one can say about a device (e.g: a light holder contains 20 or 30 L.E.Ds which glows when power supply is off, from which source they are getting the supply..... battery or capacitor) without removing and opening up its case ?
CMC,
1 3100How one can check the charger of the mobile phone or any other charger .......... that is it working ? if , working is it delivering the required supply which is needed by the battery to charge properly ?
4 10208although ckt breakers have taken the place of old fuse. But instead of it , these older ones are still used in the industries and homes ? why .... what are their advantages and disadvantages ? which one is leading and winning the race and competition ?
2060which type of A.C motor is used in the fan (ceiling fan, exhaust fan, padestal fan, bracket fan etc) which are find in the houses ?
25 75069what are fluorescent lamps (fluorescent fixtures) & what are incandescen lamps (incandescents fixtures) ? differences between these two ?
1 2860how one can know the charging time, discharging time of a 12 VDC battery ? If i have a battery of 12 VDC , 4.0 AH , how long will it take to charge from a charger (power supply) of input 220 V , Output 15 V and output current of 3000 mA and how long will it take to discharge whether using or not ? How much backup will it give ?
ONGC,
1 4036if we want to increase the back up time of an UPS what should we do ? if we want to decrease the charging time of a battery/batteries attached with the UPS what should we do ?
6 15146
How to work E.L.C.B and how to connect in circuit.
When was the first multi - person space capsule launched?
why they were using TRIAC instead relay in some controllers and what is the advantages.
How do trains go around bends?
Explain the operation of 1φ ac voltage controller with rl load?
1) What is meant by C-soil in geotechnical Engineering? 2) What is Eve board? 3) What will happen when heat is applied to cement? 4) what do you understand by the lateral dimention ?
Is the hvac machines are designed 10% less than the electrical feeder value?
how will reduce the voltage. if 12volt/250ma transformer toreduce 6 volt
diff. between tension mode & speed mode
Explain what is Tufting?
Why 3 phase induction motor getting supply in body if one of it's phase is cut
Differentiate between avalanche and zener breakdown.
How will you differentiate between two stroke engine and four stroke engine?
Give list of building construction equipment & explain about them in brief. How much is output of JCB, POCLAIN, Steel cutting & bending machine, material hoist, tower crane?
What are the main cultural reasons in the change of fashion?
