Quiz: Civil Engineering
Each question carries 1 mark
Negative marking: 1/4 mark
Time: 10 Minutes
Q1. Which one of the following statements is correct? An indeterminate building frame may be converted to a determinate one by assuming
(a) hinges at mid-height of columns
(b) hinges at mid-span of the beams
(c) hinges at both mid-height of columns and midspan of beams
(d) one support as fixed at base and other support on rollers
Q2. If the radial acceleration of transition curve is 30cm/sec², radius is 200m and the velocity is 14m/sec. the length of the transition curve is
(a) 46.0 m
(b) 46.5 m
(c) 45.0 m
(d) 45.5 m
Q3. A loose uniform sand with rounded grains has effective grains size of 0.05 cm. Co-efficient of permeability of the sand is…………….
(a) 0.25 cm/sec
(b) 0.5 cm/sec
(c) 1 cm/sec
(d) 1.25 cm/sec
Q4. The flange width of isolated T-Beam is:
(c) l_0/(l/b+0.85 )+bw
Q5. A timber beam of effective span ‘l’ and of cross-section b × d is said to be laterally supported if d/b and l/b are respectively
(a) Less than 1 and less than 48
(b) Less than 2 and less than 49
(c) less than 3 and less than 50
(d) Less than 4 and less than 51
Q6. If the whole circle bearing of a line is 150°, its reduced bearing will be:
Q7. In an experiment it found that the bulk modulus of a material is equal to its shear modulus. This Poisson’s ratio is.
Q8. The degree of freedom of a simple pendulum is __
Q9. In shallow foundation design, the correction factor for water table correction in case of water table permanently remaining at or below a depth of (depth + width) of the foundation is taken as:
Q10. A costed roof is covered by a C.G.I. sheet whose width is 0.8 meter. If the total length over which sheet is to be affixed is 10.3 meter then how many sheets will be required?
Sol. An indeterminate building frame is statically indeterminate to third degree hence to make it determinate we assume hinges at both mid – height of column and midspan of beams.
Sol. C = 30 cm/sec²
= 0.30 m/sec²
R = 200 m.
V = 14 m/sec.
Length of transition curve (L) = V^3/(C.R)
= 45.7 m.
= 46 m.
Sol. Effective size (D_10 ) = 0.05 cm.
Co-efficient of permeability (k) =?
According to Hazen eq^n –
K = 100 (D_10 )^2
K = 100 × (0.05) ²
K = 0.25 cm/sec
Sol. flange width for isolated T beam
For monolithic T-beam
Sol. AS per IS 883:1994, the minimum width of beam or any flexural member shall not be less than l/50 or 50 mm of the span whichever is greater. The depth of beam of any flexural member shall not be taken more than 3 times of its width.
Sol. Whole circle bearing = 150°
Reduced bearing =?
Reduced bearing = S30° E
Sol. Given bulk modulus (K) = Shear modulus (G)
Poisson’s ratio (μ)=(3K-2G)/(6K+2G)=(3-2)/(6+2)=1/8=0.125
Sol. The No. of Independent variable required to locate the position of a system is known as degree of freedom. In case of simple pendulum there are two inputs are required for desired movement. So, degree of freedom for simple pendulum is 2.
Sol. If water table permanently remaining of or below the depth of foundation the water table correction factor equal to one.
Sol. Slope at C.G.I sheet = 15 cm = 0.15m.
Width of sheet = 0.8 m
Total length = = 10.3 m.
Number of sheets =10.3/(0.8+0.15)