## 1. A cylindrical water tank has a 2 m height and 2 m diameter. The water is filled up in the tank. The total weight of the water is (in kg). if the density of water is 1000 kg/m3.

- A. 6283.18
- B. 3141.59
- C. 1570.80
- D. 2000

6283.18

## 2. In the tank given in question 1, a small orifice is constructed to release the water. The orifice has a diameter of 2cm. Neglecting minor entry loss, the velocity of the flow (m/s) in the orifice is_______

- A. 3.132
- B. 6.264
- C. 9.396
- D. 12.528

6.264

## 3. As given in question 1 and question 2, the discharge in the orifice is ______ (in m3/s)

- A. 0.19
- B. 0.019
- C. 0.0019
- D. 1.9

0.0019

## 4. The water tank mentioned in question1 is placed on 6m height building. A pipe is fitted with the orifice of the tank to the ground. What is velocity of the flow in the pipe at the ground level (m/s).

- A. 3.132
- B. 6.264
- C. 9.396
- D. 12.528

12.528

## 5. A river flows with a velocity of 3m/s. A boat of maximum velocity 5m/s needs to travel in the river upstream direction. The travel distance is 100km. the travel time of the boat is_______ (hours)

- A. 833.33
- B. 13.89
- C. 3.472
- D. None

13.89

## 6. The boat given in question-5 travels downstream in a distance of 100km. The travel time in hours is

- A. 3.472
- B. 3.968
- C. 5.567
- D. 9.259

3.472

## 7. The cross section of the river is approximated as given in the figure: Estimate the discharge (flow rate in m3/s) of the river flowing with a velocity 2m/s.

- A. 5000
- B. 22500
- C. 2812.5
- D. 5625

5625

## 8. Reynolds number for a pipe of diameter ‘D’ is defined as

- A. 𝝆VD/ μ
- B. νD/𝝆
- C. V2D/ g
- D. ν3D/𝝆g

𝝆VD/ μ

## 9. Atmospheric pressure is measured in terms of

- A. Dyne/cm2
- B. N/m2
- C. bar
- D. atm
- all of the above
- none of the above

all of the above

## 10. As given in below figure what would be pressure at point A in kg/m2

- A. 0
- B. 7800
- C. 5100
- D. 2700

5100

## 11. If, for a fluid in motion, pressure at a point is same in all directions, then the fluid is

- A. A real fluid
- B. A Newtonian fluid
- C. An ideal fluid
- D. A non-Newtonian fluid

A real fluid

## 12. A floating body with its center of gravity at G, center of buoyancy at B and metacenter at M is stable when

- A. BM>BG
- B. BM=BG
- C. BM less than BG
- D. Cannot say

BM>BG

*Source- Books, Internet, NPTEL, Self-Analysis