1. In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be
Answer
Correct Answer:
Double
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2. A manometer is used to measure
Answer
Correct Answer:
High pressure
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3. The velocity corresponding to Reynold number of 2800
Answer
Correct Answer:
Higher critical velocity
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4. In order to measure the flow with a venturimeter, it is installed in
Answer
Correct Answer:
Any direction and in any location
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5. In one dimensional flow, the flow
Answer
Correct Answer:
Takes place in straight line
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6. In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.
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Correct Answer:
One-fourth
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7. The flow of water through the hole in the bottom of a wash basin is an example of
Answer
Correct Answer:
Free vortex
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8. The Euler’s equation for the motion of liquids is based upon the assumption that
Answer
Correct Answer:
All of these
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9. Which of the following statement is correct?
Answer
Correct Answer:
All of these
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10. An error of 1% in measuring head over the apex of the notch (H) will produce an error of __________ in discharge over a triangular notch.
Answer
Correct Answer:
2.5%
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11. The total energy line lies over the centre line of the pipe by an amount equal to
Answer
Correct Answer:
Pressure head + velocity head
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12. When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as
Answer
Correct Answer:
Vortex flow
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13. The weight per unit volume of a liquid at a standard temperature and pressure is called
Answer
Correct Answer:
Specific weight
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14. A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if
Answer
Correct Answer:
Loss of head and discharge of both the pipes is same
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15. The power transmitted through the pipe is maximum when the head lost due to friction is equal to
Answer
Correct Answer:
One-third of the total supply head
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16. In open channels, the specific energy is the
Answer
Correct Answer:
Total energy measured with respect to the datum passing through the bottom of the channel
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17. A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is
Answer
Correct Answer:
8.29 kN
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18. Which of the following statement is wrong?
Answer
Correct Answer:
The length of divergent portion in a venturimeter is equal to the convergent portion.
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19. Viscous force is the __________ of shear stress due to viscosity and cross-sectionar area of flow.
Answer
Correct Answer:
Product
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20. The velocity corresponding to Reynold number of 2800, is called
Answer
Correct Answer:
Higher critical velocity
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