A. 5%
B. 15%
C. 25%
D. 35%
Related Mcqs:
- The moisture content in a well seasoned timber is_______________?
A. 4% to 6%
B. 10% to 12%
C. 15% to 20%
D. 100% - With increase in moisture content, the bulking of sand_______________?
A. increases
B. decreases
C. first increases to a certain maximum value and then decreases
D. first decreases to a certain minimum value and then increases - The disease of dry rot in timber is caused by_____________?
A. lack of ventilation
B. alternate wet and dry conditions
C. complete submergence in water
D. none of the above - In which of the following directions, the strength of timber is maximum ?
A. parallel to grains
B. 45° to grains
C. perpendicular to grains
D. same in all directions - First class timber has an average life of_____________?
A. less than one year
B. 1 to 5 years
C. 5 to 10 years
D. more than 10 years - The type of joint commonly used at the junction of a principal rafter and tie beam in timber trussess is__________________?
A. mortise and tennon joint
B. oblique mortise and tennon joint
C. butt joint
D. mitred joint - The horizontal timber piece provided at the apex of a roof truss which supports the common rafter is called______________?
A. ridge board
B. hip rafter
C. eaves board
D. valley rafter - Percentage of carbon content in mild steel is_______________?
A. less than 0.25
B. between 0.25 and 0.7
C. between 0.7 and 1.5
D. greater than 1.5 - The important test to be conducted on a stone used in docks and harbors is________________?
A. hardness test
B. work ability test
C. weight test
D. toughness test - Proper amount of entrained air in concrete results in__________?
1. better workability
2. better resistance to freezing and thawing
3. lesser workability
4. less resistance to freezing and thawing The correct answer is:A. (1) and (2)
B. (1)and(4)
C. ((2)and (3)
D. (3)and (4)
