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
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
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
Heart rate can be increased in a case of heart block following treatment with:
A Dopamine
B Isoprenaline
C Atropine
D Digoxin
E Noradrenaline
“She never lost heart, even in the face of adversity.” Here, ‘lost heart’ means-
A to feel encouraged
B to feel discouraged
C to have a heart attack
D to lose one's beloved
Determine which of the pairs below has a relationship most simillar to that of the original pair HEART: PUMP
A Intestine : twist
B Lungs : collapse
C Appendix : burst
D Stomach : digest
Select an option that best expresses a relationship similar to that expressed in the original pair. HEART : PUMP
A Head : Ache
B Lungs : Collapse
C Eyes : Sleep
D Stomach : Digest
Heart:pump::
A Hand : steal
B Lungs : Collapse
C Stomach : Digest
D Artery : Vein
How much of blood does the normal human heart on each of its contraction pump into the arteries?
A 30 cm3
B 40 cm3
C 50 cm3
D 60 cm3

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