2401. Valid range for S, the degree of saturation of soil in percentage is______________?
A. S>0
B. S<0
C. 0
D. 0 < S < 100
✅ The correct answer is option D.
2402. A pycnometer is used to determine_______________?
A. water content and voids ratio
B. specific gravity and dry density
C. water content and specific gravity
D. voids ratio and dry density
✅ The correct answer is option C.
2403. Select the correct range of density index,ID ________________?
A. lD>0
B. ID>0
C. 0 < lD < 1
D. 0 < ID < 1
✅ The correct answer is option D.
2404. Stoke’s law is valid only if the size of particle is________________?
A. less than 0.0002 mm
B. greater than 0.2 mm
C. between 0.2 mm and 0.0002 mm
D. all of the above
✅ The correct answer is option C.
2405. According to IS classification, the range of silt size particles is_________________?
A. 4.75 mm to 2.00 mm
B. 2.00 mm to 0.425 mm
C. 0.425 mm to 0.075 mm
D. 0.075 mm to 0.002 mm
✅ The correct answer is option D.
2406. The effort required to lift a load W on a screw jack with helix angle a and angle of friction
A. Wtan(a + )
B. Wtan(a-)
C. Wcos(a + )
D. Wsin(a + )
✅ The correct answer is option A.
2407. Coefficient of friction is the__________________?
A. angle between normal reaction and the resultant of normal reaction and the limiting friction
B. ratio of limiting friction and normal reaction
C. the friction force acting when the body is just about to move
D. the friction force acting when the body is in motion
✅ The correct answer is option B.
2408. A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if______________?
A. the floor is smooth, the wall is rough
B. the floor is rough, the wall is smooth
C. the floor and wall both are smooth surfaces
D. the floor and wall both are rough sur-faces
✅ The correct answer is option C.
2409. Coulomb friction is the friction between_________________?
A. bodies having relative motion
B. two dry surfaces
C. two lubricated surfaces
D. solids and liquids
✅ The correct answer is option A.
2410. A single force and a couple acting in the same plane upon a rigid body________________?
A. balance each other
B. cannot balance each other
C. produce moment of a couple
D. are equivalent
✅ The correct answer is option B.