A. same
B. more
C. less
D. may be less of more depending on nature of surfaces and velocity
E. has no correlation
Related Mcqs:
- Coulomb friction is the friction between_____________________?
A. bodies having relative motion
B. two dry surfaces
C. two lubricated surfaces
D. solids and liquids
E. electrically charged particles - The co-efficient of friction depends upon _________________?
A. nature of surfaces
B. area of contact
C. shape of the surfaces
D. ail of the above.
E. A. and B. above - A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of___________________?
A. r/2
B. r/A
C. r/%
D. 0.134 r
E. 3r/8 - The effort required to lift a load W on a screw jack with helix angle a and angle of friction <j) is equal to__________________?
A. Wtan(a + )
B. Wtan(a-)
C. Wcos(a + )
D. Wsin(a + )
E. W (sin a + cos ). - For steel, the ultimate strength in shear as compared to in tension is nearly _________________?
A. same
B. half
C. one-third
D. two-third
E. one-fourth - The stress at which extension of the material takes place more quickly as compared to the increase in load is called______________?
A. elastic point of the material
B. plastic point of the material
C. breaking point of the material
D. yielding point of the material
E. ultimate point of the material - The strain energy stored in a body due to suddenly applied load compared to when it is applied gradually is____________________?
A. same
B. twice
C. four times
D. eight times
E. half - The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is_______________?
A. same
B. double
C. half
D. four times
E. one-fourth - The stress induced in a body due to suddenly applied load compared to when it is applied gradually is________________?
A. same
B. half
C. two times
D. four times
E. none of the above - The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?
A. same
B. more
C. less
D. more or less depending on other factors
E. unpredictable
