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Browse complete papersNegative pressure in pipes may result in;
Increased discharge
Better efficiency.
Cavitation
Laminar flow
Correct answer
Increased discharge
The efficiency of the draft tube is calculated by:
Inlet velocity / outlet velocity
Gain in pressure head / velocity head at inlet
Loss in head / discharge
Input / output ratio
Correct answer
Inlet velocity / outlet velocity
The relation between critical depth and specific energy (E) is:
E is maximum at critical depth
E is minimum at critical depth
E is zero at critical depth
E is negative at critical depth
Correct answer
E is maximum at critical depth
In a flow net, the angle between streamlines and equipotential lines is:
00
450
900
1800
Correct answer
00
If a rectangular section of beam is inverted (depth becomes width), how does bending stress vary under same moment?
Increases
Decreases
Unchanged
Zero
Correct answer
Increases
Which of the following is not a property of a good structural material?
High elasticity
Low creep
High brittleness
Good ductility
Correct answer
High elasticity
For prismatic members, when the far end is fixed, the stiffness factor is:
\(\frac{2EI}{L}\)
\(\frac{3EI}{L}\)
\(\frac{4EI}{L}\)
\(\frac{AEI}{L}\)
Correct answer
\(\frac{2EI}{L}\)
A column may be defined as a member of a structure:
In any position carrying a compressive load
In any position carrying a tensile load
Inclined at \(90^{\circ}\) to the horizontal, carrying an axial compression load
Inclined at \(90^{\circ}\) to the horizontal, carrying an axial tensile load
Correct answer
In any position carrying a compressive load
The moment area method is a method for determining the:
Bending moment at a point
Shear force at a point
Slope and bending moment at a point
Slope and deflection at a point
Correct answer
Bending moment at a point
Which of the following is NOT a characteristic of a good baseline in chain surveying?
It should be as long as possible.
Should be easy to measure
Should pass through rough terrain
Should be straight
Correct answer
It should be as long as possible.