Interested to Buy Any Domain ? << Click Here >> for more details...
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
- 9350 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
why we used ZNO in Lightning arrester.
2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?
hi frnds can any one help me ? plz send me placement paper of IOCL of Electrical streem .... plz send ....its urgent....
EXPLAIN THE TERMS "INTEREST AND DEPRECIATION" AS APPLIED TO ECONOMICS OF POWER GENERATION.
Some times to change of DOR of a motor, interchange of R & B is not effected and RYB take same current, but interchange of R&Y is effected ie change the DOR. My doubt is what is the problem in motor and how it is happen.
what is the voltage rating of chiller unit sensors
what is mppt (maximum power point tracking ) and how they used in solar power generation ??? what are the main components used in mppt?????
HOW CAN WE DECIDE THE SUPPLY VOLTAGE FOR MOTOR ACCORDING TO ITS RATING(IF ANYONE KNOWS GIVE IT WITH EXAMPLE AND ITS CALCULATIONS)
What is Percentage impedence of a transformer? why it is expressed at a percentage? what is the importance of percentage impedence in case of a transformer?
Hi,iam a diploma in electrical engineering.rtd from indian air force in apr 2007.prsently working in reliance next link as a network maintenance engineer since 2007,can i get a job in motherson sumi.
what is circuit breaker in transfomer and where it used
what is the difference between delta delta and star delta connection transformer? why we use delta delta transformer since it need earthing transformer for grounding?
IF alternator SCR value will be high means what happen in alternator efficency at operating power factor of 0.8
How many types of electric motors are there?
Which capacitor is preferred for high voltage and frequency?
