Question
When we want to change the magnitude of voltage but not
the frequency, which one is used?Solution
Transformer is used to change the magnitude of voltage.
Two inlet pipes M and N alone can fill a tank in 12 hours and 15 hours respectively and an outlet pipe P alone can empty the whole tank in 10 hours. Fir...
Three pipes A, B, and C can fill a tank in 15 hours, 20 hours, and 25 hours respectively. All three pipes are opened together, but after 4 hours, pipe C...
Pipe P can fill a tank in 5 hours, but pipe Q can empty it completely in 20 hours. If both are opened together, find the time needed to fill the tank.
An inlet pipe can fill an empty tank in 18 minutes whereas an outlet pipe can empty the fully filled tank in 27 minutes. Find the time taken by both the...
Three pipes A, B and C can fill a tank in t, (t+12) & (t-12) hours respectively. Pipe A opened for d hours in the tank and after that B and C also opene...
Pipe ‘P’ and pipe ‘Q’ can fill a tank alone in 40 hours and 60 hours, respectively. If pipe ‘P’ and pipe ‘Q’ were opened together and pi...
Two inlet pipes 'A' and 'B' can fill an empty tank in 60 minutes and 90 minutes, respectively. Another outlet pipe 'C' can empty the tank in 180 minutes...
In what time would a Cistern be filled by three pipes whose diameter are 2cm, 8/3cm and 4cm running together, where the largest pipe alone fill it in 18...
Pipe ‘A’ can fill a tank in 22 hours while pipe ‘B’ takes 25 hours to empty it. Pipe ‘A’ is opened alone when the tank was empty and after 1...
Pipe ‘A’ can fill a tank in 22 hours while pipe ‘B’ can empty it in 25 hours. They were operated on alternate hours starting with pipe ‘A’. ...
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