## MCQs

Total Questions : 49 | Page 4 of 5 pages
Question 31. What will be the the radius of gyration of a circular plate of diameter 10cm?
1.    1.5cm
2.    2.0cm
3.    2.5cm
4.    3cm
Question 32. What is the moment of inertia of a rectangular section about an horizontal axis through C.G?
1.    bd³/6
2.    bd²/12
3.    b²d²/12
4.    bd³/12
Question 33. What is the moment of inertia of a circular section?
1.    πD⁴/64
2.    πD³/32
3.    πD³/64
4.    πD⁴/32
Question 34. What is the moment of inertia of a rectangular section about an horizontal axis passing through base?
1.    bd³/12
2.    bd³/6
3.    bd³/3
4.    bd²/3
Question 35. A rectangle has dimension of 10cm x 20cm. where will be its center of gravity?
1.    (10,10)
2.    (20,5)
3.    (10,5)
4.    (5,10)
Question 36. Where will be the center of gravity of an I section will be if the dimension of upper web is 2x8cm, lower web is 2×16 and that of flange is 2x12cm If the y-axis will pass through the center of the section?
1.    7.611cm
2.    7.44cm
3.    6.53cm
4.    6.44cm
Question 37. The axis about which moment of area is taken is known as ____________
1.    Axis of area
2.    Axis of moment
3.    Axis of reference
4.    Axis of rotation
Answer: Option C. -> Axis of reference
Question 38. Where will be the center of gravity of an I section will be if the dimension of web is 2x20cm and that of flange is 2x15cm If the y-axis will pass through the center of the section?
1.    8.5cm
2.    9.5cm
3.    10.5cm
4.    11.5cm
Question 39. Where will be the center of gravity of an T section will be if the dimension of web is 2x20cm and that of flange is 2x15cm If the y-axis will pass through the center of the section?
1.    10.5cm
2.    11.45cm
3.    12.35cm
4.    12.85cm