Free Model Online Applied Mechanics and Graphic Statics test2

Thank you very much for taking test

Test your caliber

1. Williot-Mohr diagram is used to determine deflection in _____.
trusses only	beam only
rigid frames only	any type of structure

2. If a set of given forces are such that their free vectors build a closed polygon, then _____.
the resultant force and resultant couple are always zero	the resultant force is zero but resultant couple is not zero
the resultant force is zero but resultant couple may not be zero	the resultant force and resultant couple both may not be zero

3. For a non-concurrent force system to be in equilibrium ______.
only the closure of force polygon is sufficient	only the closure of funicular polygon is sufficient
both force polygon and funicular polygon must close	none of the above

4. In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics ?
howe truss	king post truss
fink truss	warren truss

5. The condition of equilibrium for any system of forces in a plane is ______.
that polygon of forces must close	that resultant couple must be zero
both (a) and (b)	none of the above

6. If the given forces P1, P2, P3 and P4 are such that the force polygon does not close, then the system will ____.
be in equilibrium	always reduce to a resultant force
always reduce to a couple	both (a) and (c)

7. A funicular polygon cannot be made to pass through
one specified point	two specified points
three specified points	more than three specified points

8. The number of funicular polygons which can be drawn to pass through two specified points in the space diagram are _____.
zero	1
2	infinity

9. The pole distance is measured in _____.
distance scale	force scale
mass scale	time scale

10. An ordinate in a funicular polygon represents _____.
shear force	resultant force
bending moment	equilibrium

11. The member forces in a statically in determinate truss
can be obtained by graphic statics	cannot be obtained by graphic statics
may be obtained by graphic statics	can be obtained by graphic statics by trial and error

12. The bending moment in an arch is proportional to _____.
vertical ordinate of funicular polygon	vertical ordinate of the arch
intercept between the arch axis and the funicular polygon	none of these

13. The graphical method of determining the forces in the members of a truss is based on _____.
method of joint	method of section
either method	none of the two methods

14. The diagram showing the point of application and line of action of forces in their plane is called _____.
vector diagram	space diagram
force diagram	funicular diagram

15. The force polygon representing a set of forces in equilibrium is a ______.
triangle	open polygon
closed polygon	parallelogram

16. Force polygon method is applicable for _____.
any copianar force system	a system of parallel forces only
concurrent copianar force system	non-concurrent copianar force system

17. A system of copianar forces is in equilibrium when
force polygon closes	funicular polygon closes
both force polygon" and funicular polygon close	all the forces are concurrent

18. A system of copianar forces acting on a rigid body can be reduced to ______.
one force only	one couple only
one force and one couple only	none of the above

19. Free body diagram is an _____.
isolated joint with only body forces acting on it	isolated joint with internal forces acting on it
isolated joint with all the forces, internal as well as external, acting on it	none of the above

20. In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is _____.
30	50
60	80