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Tata Iron and Steel Company (TISCO) was founded by Jamsetji Nusserwanji Tata and established by Sir Dorabji Tata on 26 August 1907. TISCO started pig iron production in 1911 and began producing steel in 1912 as a branch of Jamsetji's Tata Group . The first steel ingot was manufactured on 16 February 1912. By 1939, it operated the largest steel plant in the British Empire. The company launched a major modernisation and expansion program in 1951. Later, in 1958, the program was upgraded to 2 million metric tonnes per annum (MTPA) project . By 1970, the company employed around 40,000 people at Jamshedpur, and a further 20,000 in the neighbouring coal mines .
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Pipe 'A' can fill a water tank in 6 hours, while pipe 'B' requires 8 hours to do the same. When a third pipe, 'C', also contributes, the tank is filled ...
Two pipes, A and B, can independently fill the tank in 25 minutes and 30 minutes respectively, while pipe C can empty 8 gallons from the tank in 4 minut...
Two inlet pipes M and N alone can fill a tank in 10 hours and 12 hours respectively and an outlet pipe P alone can empty the whole tank in 8 hours. Firs...
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 10 minutes and 12 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If a...
Tap A and Tap B fill a drum of volume 483 liters in 21 minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the ci...
A tank can be filled by two pipes, A and B, in 15 minutes and 20 minutes, respectively. Both pipes are opened together, but after 5 minutes, pipe A is c...
Two pipes can alone independently fill a bucket in 10 and 12 minutes. Both are opened together for 3 minutes after which the second pipe is turned off. ...
Pipe A and Pipe B together can fill the tank in 15 hours. The capacity of the pipe A is 20% of the capacity of the pipe B. How much time will pipe B alo...
Pipe ‘A’ can fill a tank in 20 hours while pipe ‘B’ takes 40 hours to empty it. Pipe ‘A’ is opened alone when the tank was empty and after 1...