Periyar University 2008 B.E Electronics

Sol: The time being taken to fill the bucket.

After reaching program it waits there for 10ms and back to the programmer in

20 ms. then total time to get the response is

20ms +10 ms=30ms


Ans: 30ms





10) A file is transferred from 1 location to a different in ‘buckets’. The size of the bucket is 10 kilobytes. Eh bucket gets filled at the rate of 0.0001 kilobytes per millisecond. The transmission time from sender to receiver is 10 milliseconds per bucket. After the receipt of the bucket the receiver sends an acknowledgement that reaches sender in 100 milliseconds. Assuming no fault during transmission, write a formula to compute the time taken in seconds to successfully complete the transfer of a file of size N kilobytes.

Ans: (n/1000)*(n/10)*10+ (n/100).... (Not 100% sure)




11)A fisherman's day is rated as good if he catches nine fishes ,fair if seven fishes and bad if five fishes .He catches 53 fishes in a week n had all good, fair n bad days in the week. So how many good, fair n bad days did the fisher man had in the week.

Sol:


good days means --- nine fishes so 53/9=4(remainder=17) if u presume five then there is no chance for bad days.

fair days means ----- seven fishes so remaining 17 --- 17/7=1(remainder=10) if u presume two then there is no chance for bad days.

bad days means -------5 fishes so remaining 10---10/5=2days.




4*9=36

7*1=7

2*5=10

36+7+10=53...

Ans: four good, one fair, 2bad. ==== total seven days.





12) x+y+z=7--------- eq1

9*x+7*y+5*z=53 -------eq2

Sol:

Multiply eq one by 9,

9*x+9*y+9*z=35 -------------eq3

From eq2 and eq3

2*y+4*z=10-----eq4

Since all x, y and z are integer i should put a integer value of y such that z sud be integer in eq 4.....And there will be 2 value y=1 or three then z = two or one from eq 4

For 1st y=1,z=2 then from eq1 x= 4

So 9*4+1*7+2*5=53.... Satisfied

Now for 2nd y=3 z=1 then from eq1 x=3

So 9*3+3*7+1*5=53 ......satisfied

So finally there are 2 solution of this ques.




Ans:(x,y,z)=(4,1,2) and (3,3,1)...





13) Y catches five times more fishes than X. If total number of fishes caught by X and Y is 42, then number of fishes caught by X?

Earning:   Approval pending.