According to Unwin's formula, the relation between diameter of rivet hole (d) and thickness of plate (t) is given by (where d and t are in mm)

In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)

A

1 d

B

1.5 d

C

2.5 d

D

2 d

In order to avoid tearing off the plate at an edge, the distance from the center of the rivet hole to the nearest edge of the plate (i.e. margin) should be (where d = Diameter of rivet hole in mm)

A

d

B

1.5 d

C

2 d

D

2.5 d

According to Unwin's formula, the relation between the diameter of rivet hole (d) and the thickness of plate (t) is given by (where d and t are in mm)

A

$${\text{d}} = \sqrt {\text{t}} $$

B

$${\text{d}} = 1.6\sqrt {\text{t}} $$

C

$${\text{d}} = 2\sqrt {\text{t}} $$

D

$${\text{d}} = 6\sqrt {\text{t}} $$

Which of the following assumptions are made in the design of rivet joints? A. Rivets are stressed equally B. Stress in plate is maximum at mid-width C. Rivet hole is completely filled by rivet D. Friction between plates is neglected

A

only A

B

A and C only

C

B and D only

D

A, C and D only

For riveted joint, which empirical relation is used for calculating the diameter of rivet? Where, t = Thickness of main plate, d = Rivet diameter in mm

A

$\rm d = 3\sqrt t$

B

$\rm d = 1.9 \sqrt t$

C

$\rm d = 1.2 \sqrt t$

D

$\rm d = 6\sqrt t$

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

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

Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin's formula as

A

d = 1.1 t

B

d = 1.6$$\sqrt {\text{t}} $$

C

d = 1.5 t

D

d = 3$$\sqrt {\text{t}} $$

If the thickness of plate to be connected by a rivet is 16 mm, then suitable size of rivet as per Unwin’s formula will be

A

16 mm

B

20 mm

C

24 mm

D

27 mm

The diameter of the rivet hole is usually __________ the nominal diameter of the rivet.

A

Equal to

B

Less than

C

More than

D

None of these

According to Unwin's formula, the relation between diameter of rivet hole (d) and thickness of plate (t) is given by (where d and t are in mm)

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