UPSC Civil Service Exam Questions For Civil Engineering Students

UPSC Civil Service Exam Questions For Civil Engineering  Students

1) Which type of light energy is effectively absorbed by CO2 in the lower boundary of the troposphere ?

A) X - rays
B) UV - rays
C) Visible light
D) Infra-red rays


Answer: Option D

2) A horizontal rod AB carries three loads of 3.0 kg, 7.0 kg and 10.0 kg at distances of 2.0 cm, 9.0 cm and 15 cm respectively from A where it is hinged. Neglecting the weight of the rod, which is the point at which the rod will be balance ?

A) 10.95 cm form A
B) 11.25 cm from A
C) 12.55 cm from A
D) 13.25 cm form A

Answer: Option A


3) The plastic modulus of a section is 5 x 10-4m3. Its shape factor is 1.2 and the plastic moment capacity is 120 kNm. What is the value of the yield stress of the material ?

A) 100 N/mm2
B) 200 N/mm2
C) 240 N/mm2
D) 288 N/mm2

Answer: Option C



4) The following steps are involved in making a spigot and socket joint of cast iron pipes used in water supply systems :

1. Tarred gasket or hemp yarn in wrapped around the spigot.
2. The sipgot end is centered into the socket end of the preceding pipe.
3. A joining ring end is placed around the barrel and against the face of the socket.
4. The gasket or hemp yarn in caulked slightly.
5. Molten pig lead is poured and then caulked.
The correct sequence of these steps is

A) 2, 1, 4, 3, 5
B) 2, 1, 3, 4, 5
C) 1, 2, 4, 5, 3
D) 1, 2, 3, 5, 4

Answer: Option C


5) A cold drawn seamless steel tubing subject to internal pressure, has a diameter of 6 cm and wall thickness of 0.2 cm. The ultimate strength of steel is 3600 kg/cm2. The bursting pressure (in kg/cm2) is

A) 120
B) 240
C) 480
D) 960

Answer: Option B



6) The ratio of total elongation of a bar of uniform cross-section produced under its own weight to the elongation produced by an external load equal to the weight of the bar is

A) 2
B) 1
C) 1/2
D) 1/4

Answer: Option C


7) Tensile strength of concrete is measured by

A) direct tension test in the universal testing machine
B) applying compressive load along the diameter of the cylinder
C) applying third point loading on a prism
D) applying tensile load along the diameter of the cylinder

Answer: Option A


8) A lemniscate curve between the tangents is transitional throughout, if the polar deflection angle of its apex is equal to (φ in the deflection angle between the initial and final tangents)

A) φ/2
B) φ/4
C) φ/6
D) φ

Answer: Option C


9) Heliograph is a type of

A) instrument used for recording the movement of sun
B) instrument used for contouring an area
C) electronic distance measuring device
D) sun signal used in triangulation work

Answer: Option D



10) A and B are Skempton's pore pressure coefficients. Forsaturated normally consolidated soils,

A) A > 1 and B > 1
B) A > 1 and B < 1
C) A < 1 and B > 1
D) A < 1 and B = 1

Answer: Option D

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