Plz explain with steps..
What s de answer for this question : Three independent
mechanisms A, B and C have been incorporated for power
saving in a plant producing respectively 30%, 40% and 10%
efficiency. Assuming that they operate independently, what
is the net power efficiency achieved.
(a) 62.2% (b) 68% (c) 61% (d) 64% (e) 56% ans 61..
Answers were Sorted based on User's Feedback
Answer / saji
chance that A is not efficient=.7
if work together=.6*.7*.9=.378
so if they work together=1-.378=.622=62.2%
|Is This Answer Correct ?||25 Yes||1 No|
Answer / feedow
chance that a dont works is .7
b works is .6
c works is .9
so net efficiency is 1-(.7*.6*.9)
|Is This Answer Correct ?||13 Yes||1 No|
Answer / mardana
3rd person is correct ans is 62.2
|Is This Answer Correct ?||8 Yes||0 No|
Answer / kartik
its simple...just use the follow formula...
here since it is saving therefore we use
therefore for 1st 2 we get
then this intermediate ans wid 3rd gives..
|Is This Answer Correct ?||6 Yes||0 No|
Answer / tinku
|Is This Answer Correct ?||3 Yes||13 No|
) Peter and Paul are two friends. The sum of their ages is 42 years. Peter is twice as old as Paul was when Peter was as old as Paul is now. What is the present age of Peter?
The lowest temperature in the night in a city A is 1/3 more than 1/2 the highest during the day. Sum of the lowest temperature and the highest temperature is 100 degrees. Then what is the low temp?
Two Pencils 8 cents 5 Pencils cost ?
Two trains at speed 60 km/hr come in the opposite direction. At a particular time the distance between the two trains is 18km. A shuttle flies between the trains at the speed of 80 km/hr. At the time the two trains crashes what is the distance traveled by shuttle?
2 is what % of 4t ?
If 4 circles of equal radius are drawn with vertices of a square as the center, the side of the square being 7 cm, find the area of the circles outside the square?
45 grinders brought @ 2215/-.transpot expense 2190/-.2760/- on octroi . Find SP/piece to make profit of 20% 2585 2225 2670 3325
If A=Z, B=Y, C=X, .......... Z=A, Then SOUR = ?
Four of the following five are alike in a certain way and so form a group. Which is the one that does not belong to that group? (a) 17 (b) 23 (c) 37 (d) 13 (e) 73
If x,y,z are three consecutive natural numbers, which of the following numbers should be x+y+z
If your manager ask you to bet on race bewteen eagle cheetah and dolphin whihc one would you prefer and why,provided that the race is happening on land.
If you take a marker & start from a corner on a cube, what is the maximum number of edges you can trace across if you never trace across the same edge twice, never remove the marker from the cube, & never trace anywhere on the cube, except for the corners & edges?