A. density of metal can’t be determined
B. metal is twice as dense as water
C. metal will float in water
D. metal is twice as dense as unknown fluid
E. none of the above
Related Mcqs:
- Which is the false statement about true stress-strain method______________?
A. It does not exist
B. It is more sensitive to changes in both metallurgical and mechanical conditions
C. It gives, a more accurate picture of the ductility
D. It can be correlated with stress-strain values in other tests like torsion, impact, combined stress tests etc.
E. It can be used for compression tests as well. - The materials having same elastic properties in all directions are called________________?
A. ideal materials
B. uniform materials
C. isotropic materials
D. paractical materials
E. elastic materials - The property of a material by virtue of which it can be beaten or rolled into plates is called _________________?
A. malleability
B. ductility
C. plasticity
D. elasticity
E. reliability - In a prismatic member made of two materials so joined that they deform equally under axial stress, the unit stresses in two materials are ?
A. equal
B. proportional to their respective moduli of elasticity
C. inversely proportional to their moduli of elasticity
D. average of the sum of moduli of elas-ticity
E. none of the above - The force acting along the circumference will cause stress in the walls in a direction normal to the longitudinal axis of cylinder; this stress is called___________________?
A. longitudinal stress
B. hoop stress
C. yeiled stress
D. ultimate stress
E. none of the above - The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of __________________?
A. friction
B. limiting friction
C. repose
D. kinematic friction
E. static friction - 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 ). - Longitudinal stress in a thin cylinder is__________________?
A. equal to the hoop stress
B. twice the hoop stress
C. half of the hoop stress
D. one-fourth of hoop stress
E. four times the hoop stress - Resilience of a material is considered when it is subjected to_________________?
A. frequent heat treatment
B. fatigue
C. creep
D. shock loading
E. resonant condition - The Young’s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length________________?
A. half
B. same amount
C. double
D. one-fourth
E. four times
