Question Paper Gate - Civil Engineering
1. The major and minor principal stresses at a point are 3 MPa and -3 MPa respectively .The maximum shear stress at the point is
(a) zero
(b)3mpa
(c)6mpa
(d)9mpa
Ans. ( b )
2. The number of fin dependent elastic constants for a linear elastic isotropic and homogeneous material is
(a)4
(b)3
(c)2
(d)1
Ans. ( c )
3. The effective length of a column of length L fixed against rotation and translation at one end and free at the other end is
(a)0.5L
(b)0.7L
(c)1.414L
(d)2L
Ans. ( d )
4. As per Indian standard code of practice for prestressed concrete (Is : 1343 -1980 ) the minimum grades of concrete to be used for post-tensioned and pre –tensioned structural elements are respectively
(a) M 20 for both
(b) M 40 for both
(c) M 15 for both
(d) M 30 for both
Ans. (d )
5. A fine grained soil has liquid limit of 60 and plastic limit of 20. As per the plasticity chart according to IS classification, the soil is represented by the letter symbols
(a)CL
(b)CI
(c)CH
(d)CL-ML
Ans. ( c )
6. Quick sand condition occurs when
(a)the void ratio of the soil becomes 1.0
(b) the upward seepage pressure in soil becomes zero
(c) the upward seepage pressure in soil becones equal to the saturated unit weight of he soil
(d)the upward seepage pressure in soil becomes equal to he submerged unit weight of the soil
Ans. ( d )
7. The flow in a rectangular channel is subcritical If width of the channel is reduced at a certain section the water surface under no certain section the water surface funder no-choke condition will
(a) drop at a downstream section
(b) rise at a downstream section
(c) rise at an upstream section
(d) not undergo any change
Ans. ( a )
8. A coastal city produces municipal solid waste (MSW) with high moisture content high organic materials, low calorific value and low value and low inorganic material s .The most effective and sustainable potion for MSW management in that city is
(a) Composting
(b)Dumping is sea
(c) Incineration
(d)landfill
Ans. ( a )
9. According to the Noise Pollution (Regulation and Control ) Rules 2000 of the Ministry of Environment and Forests India the day time and night time noise level limits in ambient air for residential areas expressed in dB (A) Leq are
(A) 50 and40
(b) 55 and45
(c)65 and 55
(d) 75 and 70
Ans. ( b )
10. An air parcel having 40
c temperature moves from ground level to 500 m elevation in dry air following the “adiabatic lapse rate “ The resulting temperature of air parcel at 500 m elevation will be(a) 35
(b)38
(c)41
(d)44
Ans. ( a )
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