One 200 V, 100 W bulb is connected in series with primary of
a 200 V, 10 kVA transformer. If its secondary is
kept open circuited, then the bulb would have
(1) Full brightness (2) Poor brightness
(3) A little less than full brightness (4) More than full
brightness...explain
- 2 Answers
- 8158 Views
- I also Faced
- E-Mail Answers
Answer Posted / ajayiet
when transformer secondary
is open it is at no load means
only no load current will flow
to supply the losses .but luk at
the rating of machine 10000
va so full load current is 10
kva/200 v i.e. 50 amp.now no
load current is 2 to 6 percent
of full load current i.e. 1 to 3
amp.resistance of lamp is 200
ohms so at no load wattage
i^2R is from 200 to 600
watt.so bulb will be
damaged.option is more
appropriate.
| Is This Answer Correct ? | 2 Yes | 5 No |
Post New Answer View All Answers
how to calculate maximum current
how i calculate the syncrones generator NGR resistance .if we have a 6mw generator line voltage of generator 11kv also line current 393.3 ampere.
What is transister define the transister ammiter ,base, colector.
Why are the laminations insulated from each other?
What will happen to the protection and metering, if the polarity of a single or two PT/PTs in three phase system is reversed? Please provide reference if any.
How can I calculate per unit (KWH) fuel (Gas/ Diesel both) consumption 1MW unit?
can i able to get bhel previous exam question paper?
During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.
how will we calculate the copper wire load..
Difference between On Line capacitor and Station Type capacitor.
What type of fittings and electrical accessories can be install in radiation area ?
i have a 1500kVA transformer what is the kWH meter i need to use?
How can you sized or estimate the ligthning arrester current rating?
What is the earth treantment procedure?
what is the maximum temperature rating of a thhn insulated conductor?
