Answer / bijay

OBVIOUSLY OFF LINE UPS IS BETTER THAN ONLINE UPS,WHEN IT
COMES TO POWER SAVING.
REASON BEING IN ONLINE UPS CHARGING(FLOAT CHARGING)IS
ALWAYS CONSUMING ENERGY,EVEN IF THE BATTERY IS FULLY
CHARGED.WHEREAS IN OFFLINE UPS NO NEED OF FLOAT CHARGING IS
THERE,OFFLINE UPS REQUIRES ONLY BOOST CHARGING

Answer / rafi

Online ups - When the supply line is on the battery is
charging at the same time we are consuming power from
battery
Offline ups - When the supply line is on the battery is
charging but we are consuming power from the line, when the
line is off then only we are consuming power from battery

Answer / srij21

According to me both will draw same power depending upon
the load connecte to it.

What is application of MCB & How it works

1 Answers   TATA,

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current transformer balance the power level on both sides. e.g in case of step up, at secondary side voltage rise but current decrease and vice versa in case of step down transformer. but how this power level remains same in case of current transformer and voltage transformer

0 Answers  

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IN dc capacitive reactance is??

0 Answers  

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what is the effect of PF on alternator sizing?

2 Answers   Siemens,

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How to size fuse? How to size MCB?

0 Answers  

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which connection is there in a rotor of the motor

2 Answers   All Trades Electrical, HAL,

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What are the conditions to be satisfied before connecting two DC generators in parallel?

9 Answers   Bhel, Godrej,

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An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor frequency at maximum torque point is A 3.33% B 4.44% C 5.55% D 6.66%

1 Answers  

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What is the vector group of a transformer,how can it be found out?

0 Answers   Jindal,

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What is the maximum size(MVA)of power transformer available in the India/world?

13 Answers   Adani,

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1.what is surge 2.what is lightning 3.what is switching 4.difference between surge,lightning,switching used in power system 4.definition of surgearrestor,lightningarrestor 5.adv and disadv of surgearrestor,lightningarrestor 6.uses and purpose of surgearrestorand lightning arrestor 7.block dia of surge arrestor 8.blockdiagram of lightning arrestor 9.operation and working of surge arrestor and lightning arrestor 10.basic formula of surgearrestor and lightning arrestor 11.basic diagram of surge arrestor and lightning arrestor

1 Answers   Crompton Greaves, Framo, L&T,

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Can we see the poles in the motor?. if yes then how can we see plz tel me

2 Answers   MRF,

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