WorksheetsEM_Z-section_Quiz1-20May2021
Total questions: 10
Worksheet time: 3mins
Moment of inertia is lowest if it is taken about an axis passing through
Base of the section
Centroid of the section
Top most point of the section
Origin of the section
A force while acting on a body may
change its motion
balance the forces, already acting on it
give rise to the internal stresses in it
all of these
When the diameter of circular section is doubled, its radius of gyration is
reduced to half
reduced by 8 times
is doubled
increased by 8 times
The product of either force of couple with the arm of the couple is called
Resultant couple
Moment of the forces
Resulting couple
Moment of the couple
Which of the following conditions should be satisfied for co-planer concurrent forces to be in equilibrium?
Σ Fx = Σ Fy = 0
Σ M = 0
Both a. and b.
None of the above
Indeterminate structures have number of unknown quantities _________ available conditions of equilibrium.
equal to
less than
more than
none of the above
A framed structure is perfect, if the number of members are __________ (2j - 3).
equal to
less than
greater than
All of the above
The angle which an inclined surface makes with the horiontal when a body placed on it is on the point of moving down, is called
angle of repose
angle of friction
angle of inclination
none of these.
Lami's theroem states that
three forces acting at a point are always in equilibrium
if three forces acting on a point can be represented in magnitude and direction by the sides of a triangle, the point will be in the state of equilibrium
three coplaner forces acting at a point will be in equilibrium, if each force is proportional to the sine of the angle between the other two
three coplaner forces acting at a point will be in equilibrium if each force is inversely proportional to the sine of the angle between the other two
If two forces P and Q (P > Q) act on the same straight line but in opposite direction, their resultant, is
P + Q
P/Q
Q/P
P - Q
Q - P.
