Related Questions

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 2.54 × 104 J
B 1.44 × 104 J
C 2.34×104 J
D 1.54 × 104 J
E 1.54 ×104 J
A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by
A Decreasing the size of the inlet pipe
B Increasing the size of the inlet pipe
C Lowering the pump position
D Both B and C
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 72
B 75
C 84
D 96
A centrifugal pump designed to pump water is employed to pump a more viscous oil. In the later case, the pump
A Develops a lower head
B Capacity is reduced
C Requires more power
D All of the above
The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as
A Manometric efficiency
B Mechanical efficiency
C Overall efficiency
D Volumetric efficiency
A boat has a crack in its bull which is leaking water into the boat and could pump which can pump the water out in 8 hours . If the boat is 168 km away from the shore and the pump is running what is the minimum speed the boat should run at so that it can reach the shore before sinking?
A 5km./hour
B 6 km/hour
C 7 km/hour
D 8km/hour
Liquid delivery by centrifugal pump starts, only when the head developed by it is equal to the __________ head.
A Manometric
B Total
C Static
D Friction
The type of pump used for lifting large quantity of sewage is a __________ pump.
A Gear
B Centrifugal
C Reciprocating
D Plunger
Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the __________ decreases.
A NPSH required
B BHP required by the pump
C Head of the liquid pumped
D All of the above
The type of pump used for the recirculation of molten sodium coolant in liquid metal cooled reactor is a/an __________ pump.
A Electromagnetic
B Reciprocating
C Centrifugal
D Volute

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