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একটি পানিপূর্ণ কুয়ার গভীরতা 20m ও ব্যাস 2 m. কুয়াটিকে পানি শূণ্য করার জন্য 5 HP এর একটি পাম্প লাগানো হল। অর্ধেক পানি তোলার পর পাম্পটি নষ্ট হয়ে গেল। বাকি পানি তোলার জন্য একই ক্ষমতা সম্পন্ন আর একটি পাম্প লাগানো হল। প্রথম পাম্প দ্বারা সম্পাদিত কাজের পরিমান নির্ণয় কর।(The depth and diameter of a water filled well are 20 m and 2 m respectively. An engine of 5 HP is attached to pump out the water. The pump was ruined after emptying half of the water. Then another pump of same capacity was attached to pump out rest of the water. Determine the work done by first pump.) 
A, B and C are three small pumps fitted to a tank. D is a large pump fitted to the tank. Pump B is 25% more efficient than A. Pump C is 20% more efficient than B. Pump D is 4/3rd efficient of pump C. All of the pumps are used to fill the tank. What is the ratio of the time taken by pumps A and B to fill the tank together to the time taken by the pumps B and D to fill the tank together?
Working alone, pump A can empty a pool in 3 hours. Working alone, pump B can empty the same pool in 2 hours. Working together, how many minutes will it take pump A and pump B to empty the pool?
A centrifugal pump designed to pump water is employed to pump a more viscous oil. In the later case, the pump
In the question below are given two statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: I. Only a few generator is pump II. Some pump is gasoline Conclusions: I. Some pump is not gasoline II. Some generator is not pump
If the gear ratio for fuel pump is thrice that of the oxidizer pump, the shaft speed of fuel pump is ____________ the oxidizer pump.
Calculate the flow of backwash pump required for the activated carbon filter for the following details. Flow: 2500 m3/h. Rise Velocity: 15m/h Backwash pump velocity: 24 m/h
A truck travels 1/3 of the distance on a straight road with a velocity of 10 km/h, the next 1/3 with a velocity of 20 km/h and last 1/3 with a velocity of 60 km/h. What is the average velocity of the truck for the whole journey?
In the velocity diagram shown below, u = blade velocity, C = absolute fluid velocity and w = relative velocity of fluid and the subscripts 1 and 2 refer to inlet and outlet. This diagram is for
Consider the following statements about velocity potential : 1. Velocity potential is a vector function similar to stream function. 2. It is a fully three dimensional function and not limited to two coordinates. 3. Velocity potential does not exist at stagnation points. 4. Velocity potential exists only if the flow is Irrotational. Which of these statements are correct?