Modal questions paper part-1(civil engineering)

1. Rivets are generally specified by
(1) thickness of plates to be joined
(2) overall length
(3) shank diameter
(4) diameter of head

2. Which grade is not valid for rcc work as per ISCODE 456:2000?
(1) M20              (2) M30
(3) M55              (4) M60

3. Compression members always tend to buckle in the direction of the
(1) axis of load
(2) perpendicular to the axis of load
(3) minimum cross section
(4) least radius of gyration

4. Assuming the values of maximum deviation ΔP and ΔE to be 25% of the computed value of P and E respectively, the minimum value of the factor of safety is
(1) 1.00 (2) 0.67
(3) 1.67 (4) 2.67

5. The process of mixing some mortar in the mixer at the beginning of the first batch concrete mixing is called: (1) Buttering         (2) Borrowing
(3) Initiating         (4) None of these

6. In the design of purlins, depth of angle section should not be less than: (1) L/ 45          (2) L/ 60
(3) L/ 50          (4) No relationship

7. Hydraulic radius is equal to:
(1) Area divided by the square of the wetted perimeter
(2) Area divided by the wetted perimeter
(3) Wetted perimeter divided by area (4) Square root of the area

8. On wetting, cohesive soils:
(1) Loose permeability
(2) Gain shear strength
(3) Loose elasticity
(4) Decrease their shear strength

9. The first stage of natural process of sludge digestion is:
(1) Acid fermentation
(2) Acid regression
(3) Alkaline fermentation
(4) None of these

10. The units of viscosity are:
(1) kg sec/ m2
(2) N sec/ m2
(3) N sec2/ m3
(4) m3/ sec

11. In a Tee-Beam the breadth of the rib is equal to the:
(1) Total thickness of slab including cover
(2) Width of beam in compression zone
(3) Width of beam in tensile zone
(4) None of these

12. A structural member subjected to compressive force in a direction parallel to its longitudinal axis is called:
(1) Column
(2) Post
(3) Stanchion
(4) Any one of above

13. The piles which do not support the load by them selves, but act as a medium to transmit the load from the foundation to the resisting sub-stratum are known as:
(1) Friction piles
(2) Bearing piles
(3) Bater piles
(4) Compaction piles

14. A flow in which the quantity of liquid flowing per second is constant, is called:
(1) Stream line flow
(2) Turbulant flow
(3) Steady flow
(4) Laminar flow

15. The allowable stress to which a structural member can be subjected, is called:
(1) Working stress
(2) Permissible stress
(3) Tensile stress
(4) Either (1) or (2)

16. A thin spherical shell of diameter (d) and thickness (t) is subjected to an internal pressure (p) The stress in the shell material is
(1) pd/t              (2) pd/2t
(3) pd/4t            (4) pd/8t

17. Pick up the incorrect statement from the following:
(1) Admixtures accelerate hydration (2) Admixtures make concrete water proof
(3) Admixtures make concrete acid proof
(4) Admixtures give high strength

18. For a reinforced concrete section, the shape of shear stress diagram is
(1) Wholly parabolic
(2) Wholly rectangular
(3) Parabolic above neutral axis and rectangular below neutral axis
(4) Rectangular above neutral axis and parabolic below neutral axis

19. Allowable shear strength of concrete, depends upon
(1) Shear strength
(2) Tensile strength
(3) Compressive strength
(4) None of these

20. In slump test, each layer of concrete is compacted by a steel rod 60 cm long and of 16 mm diameter for
(1) 20 times             (2) 25 times
(3) 30 times             (4) 50 times
                                          By Rk maurya 
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