We store the d.c supply...then why can't we store A.c supply???
Answer Posted / kamal kishore
We cannot store AC in batteries because AC changes their polarity up to 50 (When frequency = 50 Hz) or 60 (When frequency = 60 Hz) times in a second. Therefore the battery terminals keep changing Positive (+ve) becomes Negative (-Ve) and vice versa, but the battery cannot change their terminals with the same speed so that’s why we can’t store AC in Batteries.
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?
1) Explain why we don't link the two earthing system ht and mv on a pole mounted transformer sub-station.
Which types of gate insttaled in static switch. Please give me answer.
explain the mode of metal iranafer in Co,welding
The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.
how much value of resistance should connect to 15 kw, 6 pole 3 phase slip ring induction motor having RV-240, RA-42.
how to find the resistance and gap volatage of the diode??
Why current shoots up in the secondary on the knee point voltage during saturation test of CT? How core saturation effects the secondary current (while the primary side is open)? What the logic behind this?
if any house we instaled a 1.5 ton ac and its phase cable of wiring is installed but netrual cable of wiring not instaed. my question is that is neutual of house(for other wiring is capable for ac load or a sepeart neutrual wiring required
I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???
I am having a 1500 KVA transformer whose secondary current is 2086A and my connected load is 1000 KVA, I am having 400 KVAR APFCR for PF improvement what ratio of CT should i install in LT EB Bus to get optimum PF improvement?
WHAT IS THE DIFFERENCE BETWEEN GENERAL INVERTER AND SOLOR INVERTER TELL ME PLZ
what is metering cum synchronizing panel and how it is used?
what is the meaning of vcc
What should be the voltage between Neutral and Ground in secondary side of the step down transformer (230 V to 110 V) with no load condition?