A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the

Compression members always tend to buckle in the direction of the

A

Axis of load

B

Perpendicular to the axis of load

C

Minimum cross section

D

Least radius of gyration

If a number of coplanar forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.

A

Equal to

B

Less than

C

Greater than

D

None of these

The ratio of moments of inertia of a triangular section about its base and about a centroidal axis parallel to its base, is

A

1.0

B

1.5

C

2.0

D

3.0

Turn buckle has

A

Right hand threads on bout ends

B

Left hand threads on both ends

C

Left hand threads on one end and right hand threads on other end

D

No threads

A connecting rod subjected to an axial load may buckle with

A

X-axis as neutral axis

B

Y-axis as neutral axis

C

X-axis or Y-axis as neutral axis

D

Z-axis

In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.

A

Equal to

B

Twice

C

Three times

D

Four times

Mass moment of inertia of a thin rod about its one end is ___________ the mass moment of inertia of the same rod about its mid-point

A

Same as

B

Twice

C

Thrice

D

Four times

The ratio of the moment of inertia of a rectangle about its centroidal axis to the moment of inertia about its base, is

A

$$\frac{1}{4}$$

B

$$\frac{1}{2}$$

C

$$\frac{3}{4}$$

D

$$2$$

According to Fleming's right-hand rule for finding the direction of induced e.m.f., when middle finger points in the direction of induced e.m.f., forefinger will point in the direction of

A

Motion of conductor

B

Lines of force

C

Either of the above

D

None of the above

The moment of inertia of a solid cone of mass ‘m’ and base radius ‘r’ about its vertical axis is

A

$$\frac{{3{\text{m}}{{\text{r}}^2}}}{5}$$

B

$$\frac{{3{\text{m}}{{\text{r}}^2}}}{{10}}$$

C

$$\frac{{2{\text{m}}{{\text{r}}^2}}}{5}$$

D

$$\frac{{4{\text{m}}{{\text{r}}^2}}}{5}$$

A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the

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