1. A 1 m long rod with a cross section of 20 mm x 20 mm is subjected to tensile forces of 40 kN. Determine the elongation of the rod if the modulus of elasticity is 200 GPa ?

0.5 mm

50 mm

5 mm

0.005 mm

Answer: 0.5 mm

Explanation:


2. Which of the following constituents in the manufacture of glass acts as an accelerator for the fusion of glass and an excess of which will be harmful ?

Cullet

Lime

Potash

Soda

Answer: Soda

Explanation:

glass acts as an accelerator for the fusion of glass and an excess of Soda will be harmful


3. What is the content of carbon in pig iron ?

0.5% to 2.5%

3% to 4%

0.002% to 0.1%

5% to 8%

Answer: 3% to 4%

Explanation:

3% to 4% is the content of carbon in pig iron


4. Which of the following statements is correct in the case of the seismic method of site investigation ?

The method can be used if a hard layer with a greater seismic velocity overlies a softer layer with a smaller seismic velocity.

If an area contains underground features such as an irregular water table, the interpretation of the result becomes very difficult

The method can be used for the areas covered by concrete or asphalt pavement having a high seismic velocity

If the surface layer is frozen, then the method cannot be used.

Answer: If the surface layer is frozen, then the method cannot be used.

Explanation:


5. What do you mean by 'contingencies' in deposit works ?

The completed supply or work done at the time of measurement

The re-allotment of the funds from one work to another work in the same division

The allotment of the funds to the department for a particular work.

The incidental charges of a miscellaneous character that cannot be classified under any subhead, but the cost is added

Answer: The incidental charges of a miscellaneous character that cannot be classified under any subhead, but the cost is added

Explanation:


6. Adding extenders in paints increases its ?

durability

washability

adhesion

pigment volume concentration

Answer: pigment volume concentration

Explanation:

Adding extenders in paints increases its pigment volume concentration


7. A steel rod of 20 mm diameter is used as a tie member in the roof bracing system and may be subjected to possible reversal of stress due to wind load What is the maximum permissible length of the member ?

2000 mm

3000 mm

1750 mm

2500 mm

Answer: 1750 mm

Explanation:


8. A floating body is said to be in stable equilibrium if ?

Its centre of gravity is below the centre of buoyancy

Its metacentric height is a negative value

Its metacentric height is zero

Its metacentric height is a positive value

Answer: Its metacentric height is a positive value

Explanation:


9. Which of the following is a non-automatic rain gauge used in the measurement of rainfall ?

Symon's rain gauge

Tipping bucket rain gauge

Weighing bucket rain gauge

Float-type rain gauge

Answer: Symon's rain gauge

Explanation:


10. As per IS 800:2007 what should be the maximum slenderness ratio for the tension members in which reversal stress due to load other than wind or seismic forces occurs ?

180

400

350

580

Answer: 180

Explanation: