Question
What element is used to make the filament of an electric
bulb?Solution
Tungsten is used for the filament in incandescent bulbs due to its high melting point and excellent electrical conductivity. It glows when heated by electric current.
A, B and C are three pipes connected to a tank. A and B together fill the tank in 30 hours, B and C together fill the tank in 40 hours. A and C together...
Tap A can fill tank X in 20 minutes, but with a leakage (tank Y), it takes 33(1/3) minutes to fill. Tap B operates at 20% less efficiency than Tap A. De...
Two pipes 'P' and 'Q' together can fill a tank in 16 minutes while 'Q' alone can fill the tank in 24 minutes. How much time does pipe 'P' alone need to ...
- Pipe X can fill a pool in 18 hours and pipe Y in 36 hours. If both the pipes are opened in an empty pool, how much time will they take to fill it?
There are 4 inlet and (y-3) outlet pipes attached to a tank. Each inlet pipe takes 30 hours to fill the tank, and each outlet pipe empties the fully fil...
Pipe L can fill a pool in 30 hours and pipe M in 45 hours. If both the pipes are opened in an empty pool, how much time will they take to fill it?
‘A’ and ‘B’ can do a piece of work in 16 days and 24 days, respectively. ‘A’ started working alone and was replaced by ‘B’ after 8 days...
An inlet can fill a tank in 36 minutes, and an outlet can drain it in 54 minutes. Find the time required to fill half the tank when both pipes are open.
Pipe ‘A’ can fill a 300-litre tank in 30 hours. If pipe ‘A’ is 25% more efficient than pipe ‘C’ whereas pipe ‘B’ is 50% more efficient t...
Pipe A alone fill the tank in x hours and Pipe B alone fill the tank in (x – 8) hours. If the efficiency of pipe B is triple of pipe A and pipe A fill...
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