answer 28 and 29......
Attachments:
Answers
Answered by
2
28.
efficiency for case 1 = 1- (273/473)= 200/473
efficiency for case 2 = 1- (73/273) = 200/273
for 1 / for 2 = 273/473 which is nearly equal to 1:1.73
so the answer would be option 2
efficiency for case 1 = 1- (273/473)= 200/473
efficiency for case 2 = 1- (73/273) = 200/273
for 1 / for 2 = 273/473 which is nearly equal to 1:1.73
so the answer would be option 2
taz123:
but 29th one
???
if you solve it by the formula in the answer you'll get effiency equal to 25
ok
then what might be the correct option
for that
I think the answer should be 1
ok
thank u so much
: )
Similar questions