Answer / sarmadahmed

Only incandescent bulb can work on AC as well as DC but not CFL. And yeah while changing the supply you must keep the magnitude the same.

Answer / bagathsing

1.A Lamp will only operate at its rated power at its rater voltage.
2.connected a 230 V (AC)Lamp to a 110 V (DC) supply its brightness would be very low.
3.brilliance at 230 V (AC)as at 230 V(DC)as a rule of thumb for fixed-value.
4.resistance a 10% drop in voltage results in a 19% drop in power.

what need of NGR(neutral grounding registor)? What it works?

2 Answers  

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What is the lockout relay

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why ct is testing using dc.. y cant we use AC insted of dc on POLARITY TEST.

6 Answers  

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How to determine the breaking capacity such as break down current and break down voltage for VCB and CT's.

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Define sensitivity?

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WHAT ARE THE DFT AND RMS MEASURMENTS PRINCIPLE IN NUMERICAL TECHNOLOGY OF POWER SYSTEM ?? WHICH IS BETTER IN WHICH QUANTITY MEASURNMENT??

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What is force on parallel conductors ?

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RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV BUT WE KNOW THAT LIGHTENING ARRESTER IS USED FOR OVER VOLTAGE PROTECTION SO WHY NOT THE RATING OF LIGHTENING ARRESTER BE MORE THAN 11KV ???????????????//

5 Answers   Hakel,

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what is voltage gradient?

8 Answers   Bhel,

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how long will take to burst/damage for a CT when secondary in open condition? Experienced: During switchgear testing(Primary current injection test) some of the CT are in open condition, but nothing happen's why?

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Why is water motor not taking the pressure? what is the problem?

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I try to check the three phase voltage in multimeter, in 125A isolator switch incommer. first i touch R phase, and then i touch Y phase using multimeter, the moment i touched, it blasts and that moment i got blindness. multimeter selector position is correct(750V AC MODE AND RED PROBE WASS IN v AND BLACK PROBE WASS IN COM. MODE. COULD ANYBODY GIVE ANSWER FOR THIS TO AVOID FURTHER ACCIDENTS PLEASE?

2 Answers  

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