The units of moment of inertia of an area are__________________?
The units of moment of inertia of an area are__________________?
A. kg m2
B. m4
C. kg/m2
D. m3
E. kg/m4
Engineering Mechanics
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Center of percussion is___________________?
Center of percussion is___________________?A. the point of C.G.
B. the point of metacentre
C. the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
D. point of suspension
E. the point in a body about which it can rotate horizontally and oscillate under the influence of gravity -
The center of gravity of a uniform lamina lies at____________________?
The center of gravity of a uniform lamina lies at____________________?A. the center of heavy portion
B. the bottom surface
C. the mid point of its axis
D. all of the above
E. none of the above -
The product of either force of couple with the arm of the couple is called_________________?
The product of either force of couple with the arm of the couple is called_________________?A. resultant couple
B. moment of the forces
C. resulting couple
D. moment of the couple
E. none of the above -
According to Lami’s theorem___________________?
According to Lami’s theorem___________________?A. three forces acting at a point will be in equilibrium
B. three forces acting at a point can be represented by a triangle, each side being proportional to force
C. if three forces acting upon a particle are represented in magnitude and
direction by the sides of a triangle, taken in order, they will be in equilibrium
D. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
E. none of the above -
D’ Alembert’s principle is used for______________________?
D’ Alembert’s principle is used for______________________?A. reducing the problem of kinetics to equivalent statics problem
B. determining stresses in the truss
C. stability of floating bodies
D. designing safe structures
E. solving kinematic problems -
According to law of triangle of forces __________________ ?
According to law of triangle of forces __________________ ?A. three forces acting at a point will be in equilibrium
B. three forces acting at a point can be represented by a triangle, each side being proportional to force
C. if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium
D. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
E. none of the above -
Which of the following is a vector quantity___________________?
Which of the following is a vector quantity___________________?A. energy
B. mass
C. momentum
D. angle
E. speed -
The forces, which meet at one point, but their lines of action do not lie in a plane, are called_________________?
The forces, which meet at one point, but their lines of action do not lie in a plane, are called_________________?A. coplanar non-concurrent forces
B. non-coplanar concurrent forces
C. non-coplanar non-concurrent forces
D. intersecting forces
E. none of the above -
Two non-collinear parallel equal forces acting in opposite direction__________________?
Two non-collinear parallel equal forces acting in opposite direction__________________?A. balance each other
B. constitute a moment
C. constitute a couple
D. constitute a moment of couple
E. constitute a resultant couple