Answer / kaushal

For battery backup,it is neccesary to connect battery in series.Because in case of series connection of batteries,
v=v1+v2+.....Vn while in case of parell connection 1/v=1/v1+1/v2+....+1/vn

Answer / pundlik wanwe

Series combination is used for the batteries as to get the required voltage. Battery capacity (ampere-hour) shall be of same

Answer / zilmil

parallel

Why rotating machines are not allowed to run near critical speed region?

2 Answers  

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why in transformers voltage given is in the multiple of 11

3 Answers  

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1. The DC generaror,s induced output emf is connected with a DC motor(as load). when increasing the load of the motor by using brake drum or any way. what are the parameters will changes in both motor and generator(voltage, current, resistance, frequency, speed, torque, power, flux etc...) 2. Similarly for AC generator and AC motor 3. similarly if using DC batteries instead of DC generator, What happens?

0 Answers   IBM, Kirloskar,

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why is that a 4*4mm cable,is always powdered internally

3 Answers   Construction, L&T,

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how does an energy meter works?

4 Answers  

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If single phase having 220v so why 3phase is440v.

7 Answers   DLF,

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why do we need a 4th wire in 3phase 3wire transmission line

6 Answers  

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prove that power consumed in 3 phase delta system is 3 times as compared to 3 phase star system

0 Answers  

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10rm cable can got load ---- amp? Or Which Size Cable can take the load 100amp capacity SCR; breaker.

1 Answers   B-Con Trade Associates,

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why we use ac?why we use dc? why we we cannot use only ac/dc for all the applications?what happen if we use?

0 Answers  

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In siemens PLC, why do we want to move the data ?

0 Answers  

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if we convert watt into kva,which one formula use by us,pls tell me?

16 Answers   ABB,

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