Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...

why current increases when voltage decreases in ac
system

Answer Posted / bowana

Ok well lets just back up a moment. what do you think
would happen if you applied 240v to a 120v motor (motor
wired only for 120v application). what everyone is saying
is the motor will only draw half the amps/maintain the same
wattage. Go ahead and try it. You might get a few seconds
out of the motor before it smokes. If motor windings
resistance stays constant, and you increase
voltage.....current goes up.
e over I/R (ohms law)

variables

volts (e) = 120
resis (r)= 10
NOW SOLVE FOR (I) "CURRENT"

120V DIVIDED BY 10 OHMS = 12 AMPS

240V DIVIDED BY 10 OHMS = 24 AMPS

smoke test 101

Is This Answer Correct ?    13 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Parts of machine and their discription in details with suitable photo

2002


how to enter inverter parameter? without manaual?

1981


If there is major % of Voltage harmonics in the system, how can it be control or reduced?

1935


What is BusBar integrity test and how it is conducted?

2158


I am interested to know what does 15 KVA DG set actually means? If I dont know the DG rating, is it possible to identify KW by simply knowing the diesel consumption?

2095


What does the letter CTNM in negative phase sequence relay means?

1741


dg started in plc mode and load taken later one battery terminal connection will be disconnected by loose connection what will happen for dg and shall we connect battery terminals while dg in load time?

2007


I have 4 DG set with 1500KVA rating. system breakers are 11KV & alternator are 415 Volts. Between alternator & breaker one stepup transformer used. i want to Know what is max. resistance for body earthing & 415 & 11KV V Neuteal earthing. my fault current is 14 times for 2 sec.

2232


What is meant by vector group

2443


I have a current transformer with 1 main reading meter with transformer outside the building and a control panel having 5 CT reading meters with black round coils inside the building. I want to know, A) when current pass through the Transformers, will the current be reduced or be the same and after that B) when current pass through the CT meters with black round coils, will the current be reduced or be the same. C) in the above process will the reading of the main meter be same or different, from the total reading of all the 5 CT meters.

1764


1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.

1963


how can we understand that where we have to use ac or dc coil for solenoid valve and why?what is the different between coil of ac and dc explain please.

1933


How short circuit MVA(Fault MVA) in a power system calculated for calculating number of earth plates ?

2238


WHAT IS THE MEANING OG (li = 7 In)

2143


what reason of line current and phase current in star connection and line current and phase current not equal in delta connection?

2041