Crushing resistance required to crush the rivet per pitch length is

When the axis of load lies in the plane of rivet group, then the most heavily loaded rivet will be the one which (where, Fa is the load shared by each rivet due to axial load and Fm is the shearing load due to moment in any rivet.)

A

Is at the maximum distance from CG of the rivet group

B

Is at the minimum distance from CG of the rivet group

C

Gives the maximum angle between the two forces Fa and Fm

D

Gives the minimum angle between the two forces Fa and Fm

The pull required to crush the rivet per pitch length is

A

$${\text{pt}}{\sigma _{\text{t}}}$$

B

$${\text{dt}}{\sigma _{\text{c}}}$$

C

$$\frac{\pi }{4}{{\text{d}}^2}{\sigma _{\text{t}}}$$

D

$$\frac{\pi }{4}{{\text{d}}^2}{\sigma _{\text{c}}}$$

According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double shear) is (where n = Number of rivets per pitch length)

A

$$\frac{\pi }{4}{{\text{d}}^2} \times \tau \times {\text{n}}$$

B

$$1.875 \times \frac{\pi }{4}{{\text{d}}^2} \times \tau \times {\text{n}}$$

C

$$2 \times \frac{\pi }{4}{{\text{d}}^2} \times \tau \times {\text{n}}$$

D

$$3 \times \frac{\pi }{4}{{\text{d}}^2} \times \tau \times {\text{n}}$$

Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d = Dia. of rivet hole and $${\sigma _{\text{t}}}$$ = Permissible tensile stress for plate material)

A

$${\text{pd}}{\sigma _{\text{t}}}$$

B

$${\text{pt}}{\sigma _{\text{t}}}$$

C

$$\left( {{\text{p}} - {\text{d}}} \right){\sigma _{\text{t}}}$$

D

$$\left( {{\text{p}} - {\text{d}}} \right){\text{t}}{\sigma _{\text{t}}}$$

The pull required to tear off the plate per pitch length is (where p = Pitch of rivets, t = Thickness of plates and $${\sigma _{\text{t}}},\,\tau $$ and $${\sigma _{\text{c}}}$$ = Permissible tensile, shearing and crushing stresses respectively)

A

$$\left( {{\text{p}} - 2{\text{d}}} \right){\text{t}} \times {\sigma _{\text{c}}}$$

B

$$\left( {{\text{p}} - {\text{d}}} \right){\text{t}} \times \tau $$

C

$$\left( {{\text{p}} - {\text{d}}} \right){\text{t}} \times {\sigma _{\text{t}}}$$

D

$$\left( {2{\text{p}} - {\text{d}}} \right){\text{t}} \times {\sigma _{\text{t}}}$$

The pull required to shear off a rivet, in double shear, per pitch length is

A

$$\frac{\pi }{4}{{\text{d}}^2}{\sigma _{\text{t}}}$$

B

$$\frac{\pi }{4}{{\text{d}}^2}\tau $$

C

$$\frac{\pi }{2}{{\text{d}}^2}{\sigma _{\text{t}}}$$

D

$$\frac{\pi }{2}{{\text{d}}^2}\tau $$

For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to

A

The new surface created

B

The size reduction ratio

C

The change in volume due to crushing

D

None of these

In order to avoid tearing of the plate at edge, the distance from the center line of the rivet hole to the nearest edge of the plate in terms of dia. of rivet d should be equal to

A

1 d

B

1.25 d

C

1.5 d

D

1.75 d

According to Indian standards, the diameter of rivet hole is made larger than the basic size of rivet by

A

0.5 mm up to rivet diameter of 24 mm

B

1 mm for rivet diameter from 27 mm to 36 mm

C

2 mm for rivet diameter from 39 mm to 48 mm

D

All of the above

A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as

A

Chain riveted joint

B

Diamond riveted joint

C

Crisscross riveted joint

D

Zigzag riveted joint

Crushing resistance required to crush the rivet per pitch length is

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