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Question Paper ESE Mechanical Engineering
Q1. A tank of length, breadth and height in the ratio of 2:1:2 is full of water. The ratio of hydrostatic force at the bottom to that at any larger vertical surface is
- 1
- 4
- 2
- 3
Answer: (a)
Q2. Which of the following fluids exhibit a certain shear stress at zero shear strain rate followed by a straight line relationship between shear stress and shear strain rate?
- Newtonian fluids
- Ideal Bingham plastic fluids
- Pseudo-plastic fluids
- Dilatent fluids
Answer: (b)
Q3. What is the specific gravity of a marble stone, which weighs 400N in air, and 200N in water? (g=10m/s 2 )
- 8
- 6
- 4
- 2
Answer: (d)
Q4. What is the intensity of pressure in the following SI units, when specific gravity of mercury is 13.6 and the intensity of pressure is 400KPa?
- 0.3 bar or 4.077m of water or 0.29 m of Hg
- 4 bar or 5.077m of water or 0.399 m of Hg
- 0.3 bar or 5.077m of water or 0.599 m of Hg
- 4 bar or 4.077m of water or 0.299 m of Hg
Answer: (a)
- Consider the following statements:
- If a small upward displacement is given to a floating body, it results in the reduction of the buoyant force acting on the body
- A slight horizontal displacement does not change either the magnitude or the location of the buoyant force
Which of the above statements is/are correct?
a. Both 1 and 2
b. 1 only
c. 2 only
d. Neither 1 nor 2
Answer: (a)
Q6. In a stream line steady flow, two points A and B on a stream line are 1m apart and the flow velocity varies uniformly from 2m/s to 5m/s. What is the acceleration of fluid at B?
- 3 m/s 2
- 6 m/s 2
- 9 m/s 2
- 15 m/s 2
Answer: (d)
Q7. The boundary layer thickness at a given distance from the leading edge of a flat plate is
- More for lighter fluid
- More for denser fluid
- Less for denser fluid
- Less for lighter fluid
Answer: (a)
Q8. In a laminar flow through a circular pipe, the discharge varies
- Linearly with fluid density
- Inversely with pressure drop
- Directly as square of pipe radius
- Inversely with fluid velocity
Answer: (d)
Q9. A fluid is flowing over a flat plate. At distance of 8 cm from the leading edge, the Reynolds number is found to be 25600. The thickness of the boundary layer at this point is
- 1.5mm
- 2.5mm
- 4.0mm
- 5.0mm
Answer: (b)
Q10. Air is flowing over a flat plate with a free stream velocity of 24 m/s, and its kinematic viscosity is 72 ร10 -6 m 2 /s. If at a particular point, the Reynolds number is 30000, its location from the leading edge is
- 0.05m
- 0.07m
- 0.08m
- 0.09m
Answer: (d)
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