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1.

The fuel consumed by a motorcycle during a journey while traveling at various speeds is indicated int eh graph below.

The distances covered during four laps of the journey are listed in the table below

Lap Distance (kilometers) Average speed (kilometers per hour)

P 15 15

Q 75 45

R 40 75

S 10 10

From the given data, we can conclude that the fuel consumed per kilometer was least during the lap [2 marks]
(A) P
(B) Q
(C) R
(D) S

asked in Electronics and Communication Engineering, 2011

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2.

The horse has played a little known but very important role in the field of medicine. Horses were injected with toxins of diseases until their blood built up immunities. Then a serum was made from their blood. Serums to fight with diphtheria and tetanus were developed this way.
It can be inferred from the passage, that horses were [2 marks]
(A) given immunity to diseases
(B) generally quite immune to diseases
(C) given medicines to fight toxins
(D) given diphtheria and tetanus serums

asked in Electronics and Communication Engineering, 2011

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3.

The sum of n terms of the series 4 + 44 + 444 + …. is [2 marks]
(A) (4/81) [10ⁿ⁺¹ -9n -1]
(B) (4/81) [10^n-1 -9n -1]
(C) (4/81) [10ⁿ⁺¹ -9n -10]
(D) (4/81) [10ⁿ -9n -10]

last reply by CpjJwWHV • 13 years ago • asked in Electronics and Communication Engineering, 2011

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4.

Given that f(y) = |y|/y, and q is any non – zero real number, the value of |f(q)-f(-q)| is : [2marks]
(A) 0
(B) -1
(C) 1
(D) 2

last reply by CpjJwWHV • 13 years ago • asked in Electronics and Communication Engineering, 2011

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5.

Three friends, R, S and T shared toffee from a bowl. R took 1/3^rd of the toffees, but returned four to the bowl. S took 1/4^th of what was left but returned three toffees to the bowl. T took half of the remainder but returned two back into the bowl. If the bowl had 17 toffees left, how many toffees were originally there in the bowl? [2 marks]
(A) 38
(B) 31
(C) 48
(D) 41

asked in Electronics and Communication Engineering, 2011

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6.

There are two candidates P and Q in an election. During the campaign, 40% of the voters promised to vote for P, and rest for Q. However, on the day of election 15% of the voters went back on their promise to vote for P and instead voted for Q. 25% of the voters went back on their promise to vote for Q and instead voted for P. Suppose, P lost by 2 votes, then what was the total number of voters? [1 mark]
(A) 100
(B) 110
(C) 90
(D) 95

asked in Electronics and Communication Engineering, 2011

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