2781. For the close coil helical spring of the maximum deflection is__________________?
A. WD3n/d4N
B. 2WD3n/d4N
C. 4W²D3n/d4N
D. 8WD3n/d4N
✅ The correct answer is option D.
Civil Engineering
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2782. In the truss, the force in the member AC is_______________?
A. 6.25 t compressive
B. 8.75 t tensile
C. t tensile
D. t compressive
✅ The correct answer is option D.
2783. Drift method of tunnelling is used to construct tunnels in__________________?
A. soft grounds
B. rock
C. self supporting grounds
D. broken grounds
✅ The correct answer is option B.
2784. The locus of the moment of inertia about inclined axes to the principal axis, is______________?
A. Straight line
B. Parabola
C. Circle
D. Ellipse
✅ The correct answer is option D.
2785. If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following_______________?
A. Q = S + F
B. Q = S – F
C. Q = F – S
D. Q = S × F
✅ The correct answer is option D.
2786. A good blast with a good yield is obtained if the cut hole is___________________?
A. normal to face
B. inclined at 45° to the face
C. inclined at 15° to the face
D. inclined at 30° to the face
✅ The correct answer is option B.
2787. Slenderness ratio of a long column, is_________________?
A. Area of cross-section divided by radius of gyration
B. Area of cross-section divided by least radius of gyration
C. Radius of gyration divided by area of cross-section
D. Length of column divided by least radius of gyration
✅ The correct answer is option D.
2788. A bar L metre long and having its area of cross-section A, is subjected to a gradually applied tensile load W. The strain energy stored in the bar is_________________?
A. WL/2AE
B. WL/AE
C. W²L/AE
D. W²L/2AE
✅ The correct answer is option D.
2789. Pick up the correct statement from the following?
A. A wire wound in spiral form, is called a helical spring
B. The pitch of a close coil spring, is very small
C. The angle made by the coil with horizontal, is called the angle of helix
D. All the above
✅ The correct answer is option D.
0. At its elastic limit, the following statement is true, 0/E__________________?
A. Strain is equal to
B. Maximum shear stress = /2
C. Strain energy = 0
0²/2E × volume
✅ The correct answer is option D.