A. Wtana

B. Wan(a-)

C. W

D. W sin (a + $)

B. solids and liquids

C. electrically charged particles

D. two lubricated surfaces

E. two dry surfaces

B. if a polygon representing forces acting at a point is closed then forces are in equilibrium

C. none of the above

D. if any number of forces acting at a point can be represented by the sides

E. a polygon taken in order, then the forces are in equilibrium

F. if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium

A. shape of the surfaces

C. ail of the above.

D. A. and B. above

E. area of contact

B. constant

C. both of above are correct

D. both of above are wrong

E. none of the above

A. determining stresses in the truss

B. solving kinematic problems

C. stability of floating bodies

D. designing safe structures

A. resultant couple

C. resulting couple

D. none of the above

E. moment of the forces

B. none of the above

C. these forces are equal

D. the lines of action of these forces meet in a point

E. the lines of action of these forces are parallel

A. area of contact

B. all of the above

C. shape of surfaces

E. strength of surfaces

A. independence of forces

B. forces

C. balance of force

E. dependence of forces

B. square

C. rectangle

D. circle

E. equilateral triangle

A. angle of friction

C. sliding friction

D. friction resistance

E. angle of repose

A. limiting friction

B. frictional resistance

C. post friction

E. kinematic friction

A. joule

B. kilogram

D. dyne

E. watt

B. kinematic friction

C. dynamic friction

D. sliding friction

E. rolling friction

B. 3L/4

C. L/3

D. L/2

E. 3L/8

A. Wcos(a + )

B. Wsin(a + )

C. Wtan(a-)

D. W (sin a + cos )

A. the floor is smooth, the wall is rough

B. the floor is rough, the wall is smooth

D. the floor and wall both are rough sur-faces

E. will be in equilibrium under all condi-tions

B. none of the above is wrong statement

C. proportional to normal load between the surfaces

D. independent of the area of contact surfaces

E. dependent on the materials of contact surface

A. m2/kg

B. kg/m

C. kg/m2

E. m4

A. atmosphere

B. kg/cm

C. ata

E. mm of wcl

A. 100

C. 500

D. 250

E. 25

A. downwards at its upper end

C. upwards at its upper end

D. perpendicular to the wall at its upper end

E. none of the above

A. coplanar

B. meet at one point ;

D. all be equal

E. something else

A. r/A

C. 3r/8

D. r/2

E. r/%

B. newton

C. pascal

D. kilogram meter

E. watt

A. non-coplanar forces

B. moment

C. lever

D. coplanar force

A. 10 kg, + ve sense

C. 45 kg, + ve sense

D. 20 kg, + ve sense

E. 10 kg, ve sense

B. half

C. four times

D. one fourth

E. same

A. none of the above

B. direction

D. magnitude

E. point of application

A. three forces acting at a point can be represented by a triangle, each side being proportional to force

B. none of the above

C. three forces acting at a point will be in equilibrium

D. if three forces acting upon a particle are represented in magnitude and

F. ection by the sides of a triangle, taken in order, they will be in equilibrium

A. acceleration

B. force

C. moment

D. velocity

A. light year

B. millimeter

C. micron

D. angstrom

A. 3 and 1 kg

B. 2 and 5

C. none of the above

E. 2 and V6

A. four members with unknown forces of the frame

B. three members with known forces of the frame

C. four members with two known forces

D. two members with unknown forces of the frame

B. slant up towards direction of pull

C. none of the above

D. remain horizontal

E. unpredictable

A. one-half of the total height above base

B. none of the above

C. three-eighth of the total height above the base

D. one-third of the total height above base

B. three-eighth of the total height above the base

C. none of the above

D. one-fourth of the total height above base

E. one-half of the total height above base

A. catenary

B. circular arc

C. elliptical

E. hyperbola

A. reaction at a point or an axis, fixed in space, around which a body is con-strained to turn

C. reaction of a rough surface of a body which rolls on it without slipping

D. reaction of any smooth surface with which the body is in contact

E. none of the above

A. different planes

B. different points

C. perpendicular planes

D. one point

B. ratio of limiting friction and normal reaction

C. dynamic friction

D. tangent of angle between normal reac-tion and the resultant of normal reac-tion and the limiting friction

E. the friction force acting when the body is just about to move

A. r/2

B. 3r/A

D. r/A

E. 2r/3

A. none of the above

B. mechanical advantage is greater than velocity ratio

D. mechanical advantage is unity

E. mechanical advantage is equal to velocity ratio

A. 2.0 cm

C. 2.5 cm

D. 3.0 cm

E. 5.0 cm

B. are equivalent

C. balance each other

D. none of the above

E. produce moment of a couple

A. intersection of its altitudes

B. all of the above

C. intersection of diagonals

D. intersection of bisector of angles

A. the center of heavy portion

B. the bottom surface

C. all of the above

E. none of the above

A. different planes

B. two points

C. perpendicular planes

E. plane

A. kcal

B. kWhr

D. kg m

E. hp hr