Related Questions

A swimming pool is initially filled to a depth of 96 inches. After 2 weeks, the depth has decreased to9212 inches. Assuming that the depth decreased at a constant rate, after how many days would the water depth have reached 9334 inches?
A 3
B 9
C 7
D 6
Substances which have permeability less than the permeability of free space are known as
A Ferromagnetic
B Paramagnetic
C Diamagnetic
D Bipolar
In a doubly-reinforced beam if ‘c’ and ‘t’ are stresses in concrete and tension reinforcement, ‘d’ is the effective depth and ‘n’ is depth of critical neutral axis, the following relationship holds good
A $$\frac{{{\text{mc}}}}{{\text{t}}} = \frac{{\text{n}}}{{{\text{d}} - {\text{n}}}}$$
B $$\frac{{{\text{m}} + {\text{c}}}}{{\text{t}}} = \frac{{\text{n}}}{{{\text{d}} + {\text{n}}}}$$
C $$\frac{{{\text{t}} + {\text{c}}}}{{\text{m}}} = \frac{{{\text{d}} + {\text{n}}}}{{\text{n}}}$$
D $$\frac{{\text{m}}}{{{\text{t}} + {\text{c}}}} = \frac{{\text{n}}}{{{\text{d}} - {\text{n}}}}$$
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
Which of the following rivers flowing in Bihar is a north flowing river?
A Bagmati
B Kamla
C Kosi
D Gandak
E None of the above
An artesian aquifer is the one where
A water surface under the ground is at atmospheric pressure
B water is under pressure between two impervious strata
C water table serves as upper surface of zone of saturation
D none of the above
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the depth (d), is
A $$\frac{{{\text{d}}{{\text{b}}^3}}}{{12}}$$
B $$\frac{{{\text{b}}{{\text{d}}^3}}}{{12}}$$
C $$\frac{{{\text{d}}{{\text{b}}^3}}}{{36}}$$
D $$\frac{{{\text{b}}{{\text{d}}^3}}}{{36}}$$
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
If the depth of water in an open channel is greater than the critical depth, the flow is called
A turbulent flow
B critical flow
C torrential flow
D tranquil flow
If the depth of water in an open channel is less than the critical depth, the flow is called
A Critical flow
B Turbulent flow
C Tranquil flow
D Torrential flow

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