a bulb of 100W and anather bulb of 200W , rated supply
voltage 230v.when supply voltage is reduced to 100v,which
bulb will give more light? and why with calculation?

Answer Posted / pravesh

if the bulbs are connected in paralled then both bulbs will
glow equally but is cannected in series the first bulb will
glow brighter , as in series current is always same and but
in parallel circuit voltage is same

Is This Answer Correct ?    4 Yes 11 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what about electrical pannel.? What is meant by plc pannel.?

1878


what is the difference between dry and wet type of 132kV terminations. which one is durable

1558


what is the purpose that we use PLC system in power system

4215


What will be advantage if we put some load in neutral of grounded star transformer & loadshortcircuit current,rated current of cable & MCB with example?

1422


How can we find the breaking capacity of a Load breaker switch (LBS) fed from 11 kv supply??ex:50KA, 26kA etc???detailed step vice answer pls.

1592






How to calculate the input cable rating for 10kva ups (3phase input and single phase output and also 3phase output, battery rating 65Ah)provide the formula also.thnx

1780


draw singleline diagram of star to delta and dol starters

1799


what is mean by kneepoint voltage? when it will happen? ( my doubt is, if CT secondary is open means ct get saturation or blas? what are factors are required for calculations? plz give currect anws:

1535


anyone knows service engineer in chennai for EDM SPARKING MACHINE.CHMER PULSE CD 60 M.pL GIVE ANY CONTACT NOS

1978


what are the effects when a salient pole alternator is run at high speed like 3000 r.p.m?

1949


How to measure size of cable on a given load

1389


in Telecom DC system-why positive +ve is made earthed.and - ve is fed to load.

2159


1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to confirm its base capacity?

1547


how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

1742


what is the difference between megger and earth resister ??

1341