831. A weir is said to be broad crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
A. equal to.
B. less than
C. more than
832. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall per unit length is (where w = Specific weight of liquid, and H = Height of liquid)
A. wH
B. wH/2
C. wH2/2
D. wH2/3
833. 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.
A. 1%
B. 1.5%
C. 2%
D. 2.5%
834. Resilience is the
A. energy stored in a body when strained within elastic limits
B. energy stored in a body when strained upto the breaking of the specimen
C. maximum strain energy which can be stored in a body
D. none of the above
835. A concentrated load is one which
A. acts at a point on a beam
B. spreads non-uniformly over the whole length of a beam
C. spreads uniformly over the whole length of a beam
D. varies uniformly over the whole length of a beam
836. Coefficient of contraction is the ratio of
A. actual velocity of jet at vena contracta to the theoretical velocity
B. loss of head in the orifice to the head of water available at the exit of the orifice
C. actual discharge through an orifice to the theoretical discharge
D. area of jet at vena contracta to the area of orifice
837. In a free nappe,
A. the pressure below the nappe is atmospheric
B. the pressure below the nappe is negative
C. the pressure above the nappe is atmospheric
D. the pressure above the nappe is negative
838. The rectangular beam ‘A’ has length l, width b and depth d. Another beam ‘B’ has the same length and depth but width is double that of ‘A’. The elastic strength of beam ‘B’ will be __________ as compared to beam A.
A. same
B. double
C. four times
D. six times
839. In a simple bending of beams, the stress in the beam varies
A. linearly
B. parabolically
C. hyperbolically
D. elliptically
840. The stress at which the extension of the material takes place more quickly as compared to the increase in load, is called
A. elastic limit
B. yield point
C. ultimate point
D. breaking point
NOTE
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