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 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
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
The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the
A Barometric pressure
B Speed of the impeller
C Diameter of the impeller
D Both B and C
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
110m গভীর একটি কুয়া থেকে ইঞ্জিনের সাহায্যে প্রতি মিনিটে 1200 kg পানি উঠানো হয়। যদি ঐ পানি উঠাতে ইঞ্জিনটির ক্ষমতা 40% কমে যায়, তাহলে এর অশ্বক্ষমতা কত?(1200 kg water is lifted per minute from a 110 m deep well with the help of an engine. If the engine loses 40% of its power to lift the water, what is its power in HP?)
A 37.75 HP
B 38 HP
C 48.17 HP
D 49 HP
E 50.2 HP
Boiler feed water pump is usually a __________ pump.
A Reciprocating
B Gear
C Multistage centrifugal
D Diaphragm
Centrifugal pump can't be used to pump
A Molten sodium (used as a coolant in Fast Breeder Reactor)
B Moderately viscous vegetable oil used in soap industry
C Thick molten soap at 80°C
D None of the above
Centrifugal pump made of pyrex or glass can't be used to pump
A Milk and fruit juices
B Alkaline solutions
C Dilute H2SO4 at room temperature
D Brine
. As the maestro lifted his baton the theater was so . still you could hear
A his heartbeat
B a pin drop
C drumbeats
D him breathing

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