The plastic modulus of a section is 4.8 x 10-4 m3. The shape factor is 1.2. The plastic moment capacity of the section is 120 kN.m. The yield stress of the material is
Options
A. 100 MPa
B. 240 MPa
C. 250 MPa
D. 300 MPa
Correct Answer
250 MPa
GATE Exam Questions problems
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1. At highway stretches where the required overtaking sight distance cannot be provided, it is necessary to incorporate in such sections the following :
Options
A. at least twice the stopping sight distance
B. half of the required overtaking sight distance
C. one third of the required overtaking sight distance
3. A vertical rod PQ of length L is fixed at its top end P and has a flange fixed to the bottom end Q. A weight W is dropped vertically from a height h(< L) on to the flange. The axial stress in the rod can be reduced by
Options
A. increasing the length of the rod
B. decreasing the length of the rod
C. decreasing the area of cross-section of the rod
D. increasing the modulus of elasticity of the material
8. The superelevation needed for a vehicle travelling at a speed of 60 kmph on a curve of radius 128 m on a surface with a coefficient of friction of 0.15 is :
Correct Answer: that promotes the aggregation of small particles into larger particles to enhance their removal by gravity
10. The focal length of the object glass of a tacheometer is 200 mm, the distance between the vertical axis of the tachometer and the optical centre of the object glass is 100 mm and the spacing between the upper and lower line of the diaphragm axis is 4 mm. With the line of collima-tion perfectly horizontal, the staff intercepts are 1 m (top), 2 m (middle), and 3 m (bottom). The horizontal distance (m) between the staff and the instrument station is