**1. Pascal-second is the unit of**

a) pressure

b) kinematic viscosity

c) dynamic viscosity

d) surface tension

### Ans: c

**2. An ideal fluid is**

a) one which obeys Newton's law of viscosity

b) frictionless and incompressible

c) very viscous

d) frictionless and compressible

### Ans: b

**3. The unit of kinematic viscosity is**

a) gm/cm-sec2

b) dyne-sec/cm2

c) gm/cm2-sec

d) cm2/sec

### Ans: d

**4. If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is**

a) 0.25

b) 0.50

c) 1.0

d) none of the above

### Ans: c

**5. The viscosity of a gas**

a) decreases with increase in temperature

b) increases with increase in temperature

c) is independent of temperature

d) is independent of pressure for very high pressure intensities

### Ans: b

**6. Newton's law of viscosity relates**

a) intensity of pressure and rate of angular deformation

b) shear stress and rate of angular deformation

c) shear stress, viscosity and temperature

d) viscosity and rate of angular deformation

### Ans: b

**7. An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be**

a) 4 kN/m2

b) 10 kN/m2

c) 12 kN/m2

d) 14 kN/m2

### Ans: d

**8. The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is**

a) at the centroid of the submerged area

b) always above the centroid of the area

c) always below the centroid of the area

d) none of the above

### Ans: c

**9. The total pressure on a plane surface inclined at an angle 9 with the horizontal is equal to**

a) PA

b) pA sin 9

c) pA cos 9

d) pA tan 9

where p is pressure intensity at centroid of area and A is area of plane surface.

### Ans: a

**10. A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of**

a) 3.75 m

b) 4.0 m

c) 4.2m

d) 4.5m

### Ans: c

**11. Centre of buoyancy always**

a) coincides with the centre of gravity

b) coincides with the centroid of the volume of fluid displaced

c) remains above the centre of gravity

d) remains below the centre of gravity

### Ans: b

**12. If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will**

a) rise until its weight equals the buoyant force

b) tend to move downward and it may finally sink

c) float

d) none of the above

### Ans: b

**13. Metacentric height for small values of angle of heel is the distance between the**

a) centre of gravity and centre of buoy-ancy

b) centre of gravity and metacentre

c) centre of buoyancy and metacentre

d) free surface and centre of buoyancy

### Ans: b

**14. A floating body is said to be in a state of stable equilibrium**

a) when its metacentric height is zero

b) when the metacentre is above the centre of gravity

c) when the metacentre is below the centre of gravity

d) only when its centre of gravity is below its centre of buoyancy

### Ans: b

**15. The increase in meta centric height**

**i) increases stability**

**ii) decreases stability**

**iii) increases comfort for passengers**

**iv) decreases comfort for passengers**

**The correct answer is**

a) (i) and (iii)

b) (i)and(iv)

c) (ii) and (iii)

d) (ii) and (iv)

## 19 comments:

this collection is really awesome!!! & really helpful for beginners & quick review of topics

most useful questions for competitive exams

really awsm colletion

pls solve the problematic bits...

97th qs. ans. is (a)

genuine but little collection....pls add more

coolllllllllllllllllllll

tkank u verymuch , v imp questions

Nice information is shared here. I was looking for blogs Fluid Mechanics Lab Equipment , then I found this blog, this is really nice and interested to read. Thanks to author for sharing this type of information.

DEAR SIR HOW CAN DOWNLOAD THESE QUESTION

97 ans is c only

and that you have seen is friction coefficient (f')

Pls sir, tell me how to download these question.

very nice sir. I want to save it as a reviewer. Thanks

these question are taken from book s.p. gupta ands.s. gupta

thanks

Questions from Basics of Civil Engineering Book.

Questions from Basic of Civil Engineering book.

This page was so awesome i learn a lot from this page. How i wish i could pass the exam with the help of this reviewer:-)

How can i download it

45.

Discharge over triangular notch= H^5/2

Discharge over V-notch is H^7/2 (NOT H^5/2)

similarly discharge over rectangular notch = H^3/2

nshuaan@gmail.com

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