GATE Previous years.............................................

hh

1. 1.

2. 2.

3. 3.

4. 4.

5. 5.

6. 6.

7. 7.

8. 8.

9. 9.

10. 10.

11. 11.

12. 12

13. 13.

14. 14.

15. 15.

16. 16.

17. A single column manometer is connected to a pipe containing a liquid of specific gravity 0.75. Find the pressure in the pipe if the area of reservoir is 250 times the area of tube for the manometer reading. The difference in mercury level is 40 cm. On the left limb the fluid is up to the height of 20 cm. a) 10.42 N/cm 2 b) 5.21 N/cm 2 c) 2.60 N/cm 2 d) None of the mentioned 18.

18. 19. A Differential manometer is connected at the points A and Bat the centre of two pipes. The pipe A(left limb) contains a liquid of specific gravity = 1.5 while pipe B (right limb)contains a liquid of specific gravity 0.85. The pressure at A and B are .5 kgf /cm 2  and 1.2 kgf /cm2 respectively. Find the difference in level of mercuru in the differential manometer. A is 2.5m above B and 5 m above the mercury in its own limb. B is 2.5 m above the mercury level in limb A. a) 12.7 cm b) 25.5 cm c) 6.28 cm d) 10.85 cm

19. Which one of the following statements is true regarding pressure? a) Pressure is a scalar quantity b) Pressure is a vector quantity c) Pressure is a scalar quantity only when the area is infinitesimally small d) Pressure is a vector quantity only when the area is infinitesimally small 20.

20. The pressure at any given point of a non-moving fluid is called the ____________ a) Gauge Pressure b) Atmospheric Pressure c) Differential Pressure d) Hydrostatic Pressure 21

21. Which device is popularly used for measuring difference of low pressure? a) Inverted U-tube Differential Manometer b) U-tube Differential Manometer c) Inclined Single column manometer d) Vertical Single column manometer 22.

22. What is the principal cause of action of buoyant force on a body submerged partially or fully in fluid? a) Displacement of fluid due to submerged body b) Development of force due to dynamic action c) Internal shear forces mitigating external forces d) None of the mentioned 23.

23. 24. What happens to the buoyant force acting on the airship as it rises in the air? a) Buoyant force increases b) Buoyant force decreases c) Buoyant force remains constant d) Buoyant force first increases then shows decrease

24. 25. A rectangular pontoon is 5 m long, 3 m wide and 1.40 m high. The depth of immersion of the pontoon is 0.60 m in seawater. If the centre of gravity is 0.7 m above the bottom of the pontoon, determine the metacentric height. The density for seawater = 1045 kg/m 3 . a) 0.135 b) 0.271 c) 0.543 d) 0.068

25. 26. The principle of floatation of bodies is based on the premise of a) Metacentre b) Newtons first law c) Newtons law of viscosity d) None of the mentioned

26. 27. Proper explanation for metacentre is: a) Point at which line of action of force meets the normal axis of body when it is given angular displacement b) Intersection of line passing through new centre of buoyancy and centre of gravity. c) point about which body starts oscillating when it is given small angular displacement d) All of the mentioned

27. B A B A D C B B B B B C C D B C B B A A D A 23. A 24. B 25. A 26. A 27. D