TCS Aptitude paper for practice

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TCS Aptitude practice paper set 4
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1

Read the following passage carefully and answer the questions given below.
Certain words are given in bold to help you locate them while answering some of the questions.
Renewable energy is the future, and the future is finally here. Global investment in renewable energy shot up last year, far outstripping investment in fossil fuels, according to a UN report. As the price of clean energy technology plummets, it has become an increasingly attractive prospect for world governments. China was by far the world’s largest investor in renewable energy in 2017, accounting for nearly half of the new infrastructure commissioned. This was mainly a result of its massive support for solar power, which globally attracted nearly a fifth more investment than in the previous year. Other countries including Australia, Sweden and Mexico more than doubled the amount of money they pumped into clean energy projects. "Yet again, this was a record year for new renewable power capacity being financed,” Francoise d’Estais from UN Environment’s energy and climate branch told The Independent. “We had a record 157
gigawatts commissioned last year, far outstripping the fossil fuel generating capacity, which we estimated as 70 gigawatts.”
In just over a decade, concerted investment has increased the proportion of world electricity generated by wind, solar and other renewable sources from around 5 per cent to 12 per cent. “The electricity sector remains the brightest spot for renewables with the exponential growth of solar photovoltaic and wind in recent years, and building on the significant contribution of hydropower generation.” But, electricity accounts for only a fifth of global energy consumption, and the role of renewables in the transportation and heating sectors remains ____(A)____ to the energy transition. The global replacement of traditional fuels with renewables led to around 1.8 gigatonnes of carbon dioxide emissions being avoided last year – the equivalent of removing the entire US transport system. According to the Wind and Solar Atlas, there are
opportunities and potential for Wind and Solar plants in the East and West Nile areas that will produce around 31,150 MW from wind and 52,300 MW from solar. Egypt is also considering financing options to conduct feasibility studies for building the world largest solar power plant for both electricity generation and water desalination.
The UK has been performing well in clean energy generation, with recent figures showing wind and solar sources had overtaken nuclear as suppliers of electricity. However, despite these positive trends, 2017 saw a big drop of 65 per cent in British renewables investment. Experts have criticised the withdrawal of UK support for onshore wind, as previous analysis has demonstrated it already has the capacity to outcompete fossil fuels as a power source.
As renewable energy prices continue to fall, however, Professor Moslener said government subsidies are likely to become less and less important.

1. Which of the following facts are correct as per the given passage?
(I) The decrease in the cost of renewable energy resulted in its wide use.
(II) China massively supported solar power and became the largest investor in renewable energy.
(III) Egypt is conducting feasibility studies for building the largest solar power plant.
2

A person purchased two articles at the same price and on selling the first article he makes a profit of 12%. Selling price of second article is Rs 90 more than the selling price of the first article. Find the cost price of one article if his overall profit percentage is 15%?
3

The ratio of the speed of a boat in still water to the speed of the current is 10:1. Ratio of time taken by the boat to cover D km in downstream to the time taken by the boat to cover (D-45) km in upstream is 3:2. Then find the value of D?
4

40 men can complete a work in 48 days. If 64 men started working and after X days 32 more men joined the work. If the remaining work is completed in 16 (2/3) days, then find the value of X?
5

A started a project by investing Rs. X and after 6 months, B invested Rs.4,000 more than what A had invested. At the end of the year, the ratio of the overall profit to that of B was 7 : 3. What was the value X?
6

A container contains a mixture of milk and water in which water is 24%. 50% of the mixture is taken out in which water is 78 litres less than the milk. Find the remaining quantity of milk in that container?
7

The perimeter of a triangle is equal to the perimeter of a rectangle. The length of the rectangle is 75% of the side of a square and the ratio of length to breadth of rectangle is 3 : 2. If the difference between the perimeter of a square and that of the rectangle is 36 cm, then find the perimeter of the triangle?
8

 

 

Solve the given quadratic equations and mark the correct option based on your answer:

I. x2 − 14?? + 45 = 0

II. y2 – 18?? + 72 = 0

 
9

I. x2 + 7?? + 12 = 0

II. y2 + 9?? + 20 = 0
10

I. 4x2– 7x + 3 = 0

II. 7y2− 17y + 6 = 0