Related Questions

A hammer and a screwdriver currently have the same price. If the price of a hammer rises by 6% and the price of a screwdriver goes up by 4%, how much more will it cost to buy 1 hammer and 1 screwdriver?
A 5%
B 10%
C 24%
D 40%
Water hammer is caused, when water flowing in a pipe is suddenly brought to rest by closing the valve. The extent of pressure thus produced due to water hammer depends on the
A Pipe length
B Fluid velocity in the pipe
C Time taken to close the valve
D All of the above
Hammer blow
A Is the maximum horizontal unbalanced force caused by the mass provided to balance the reciprocating masses.
B Is the maximum vertical unbalanced force caused by the mass added to balance the reciprocating masses
C Varies as the square root of the speed
D Varies inversely with the square of the speed
The pressure of fluid due to hammer blow is
A Directly proportional to density of fluid
B Inversely proportional to density of fluid
C Directly proportional to $${\left( {{\text{density}}} \right)^{\frac{1}{2}}}$$  of fluid
D Inversely proportional to $${\left( {{\text{density}}} \right)^{\frac{1}{2}}}$$  of fluid
A tank is fitted with 8 pipes, some of them that fill the tank and others that are waste pipe meant to those that empty the tank can empty it in 6 hours. If all the pipes are kept open when the tank is full, it will take exactly 6 hours for the tank to empty. How many of these are these are fill pipes?
A 2
B 4
C 6
D 5
Two pipes A and B can fill a tank in 20 and 30 minutes respectively . If both the pipes are used together , then how long will it take to fill the tank ?
A 12 min
B 15 min
C 25 min
D 50 min
Three pipes can independently fill a water tank in 10,12 and 15 hours. How many hours will it take for all three pipes opened together to fill half of the tank?
A 6
B 5
C 4
D 2
Two pipes A & B would fill a tank in 20 & 30 minutes respectively. Both pipes being open, find when A must be turned off so that tank may be just filled in 15 minutes.
A After 10 minutes
B After 20 minutes
C After 15 minutes
D None
Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opended together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?
A 10 min 20 sec
B 11 min 45 sec
C 12 min 30 sec
D 14 min 40 sec
Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is ----
A 60 gallons
B 120 gallons
C 150 gallons
D 170 gallons

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