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

10 people - A, B, C, D, E, P, Q, R, S and T are sitting opposite to each other in two different rows. There are five people in each row and facing towards each other. Q is not facing north is sitting opposite to the one who is sitting second to the right of D. S is an immediate neighbour of A but not of Q. P is not sitting at any of the extreme ends. R is facing north and is sitting at one of the extreme ends but not opposite to S. S is sitting in the opposite row of B but is not sitting opposite to D. Only one person is sitting between B and D. D and Q are not sitting at any of the extreme ends. C is sitting second to the right of E and opposite to the one who is an immediate neighbour of D. Who among the following pair is not sitting opposite to each other?

A

AD

B

ER

C

QB

D

CT

In a riveted joint, when the number of rivets decreases from the inner most row to outer most row, the joint is said to be

A

Chain riveted

B

Zig-zag riveted

C

Diamond riveted

D

None of these

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

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

$\rm d = 6\sqrt t$

Consider the following statements regarding welded and riveted joints 1. Welded assemblies are tight and leak proof as compared with riveted assemblies. 2. Single-welded V-joint is less reliable than square butt joint. 3. Welding results in a thermal distortion of the parts, thereby inducing residual stresses. Which of the above statements is/are correct ?

A

1 only

B

1 and 3 only

C

2 only

D

1, 2 and 3

In a lap joint, if the plates are connected to each other when the joint is made with only one row of rivets then it is called double-riveted lap joint.

A

True

B

False

A triple riveted butt joint with double straps of unequal width is to be designed for a boiler shell. The pitch of the rivets in the outer row is double the pitch in the inner row and zigzag riveting is proposed. Which of the following statement is correct?

A

There are four rivets per pitch length, all in double shear

B

There are four rivets per pitch length, out of which two are in single shear and two are in double shear

C

There are five rivets per pitch length, all in double shear

D

There are five rivets per pitch length, out of which four are in double shear and one is in single shear

In a riveted joint, when the number of rivets decrease from the innermost row to outermost row, the joint is said to be

A

Chain rivetted

B

Zig-zag rivetted

C

Diamond rivetted

D

None of these

Eight people – S, T, U, V, W, X, Y and Z are sitting in two rows. Four people are sitting in each row at equal distances and facing towards each other. T is not facing north but sitting second to the right of V. X is sitting opposite to the one who is sitting immediate right to T. U and W are sitting next to each other but none of them is sitting at extreme ends. X and S are not sitting in a same row nor opposite to each other. Only one person is sitting to the right of U who is not Z. Who among the following is not sitting opposite to each other?

A

T and Y

B

T and W

C

V and Y

D

X and Z

The hoop stress in a riveted cylindrical shell of diameter (d), thickness (t) and subjected to an internal pressure (p) is (where $$\eta $$ = Efficiency of the riveted joint)

A

$$\frac{{{\text{pd}}}}{{{\text{t}}\eta }}$$

B

$$\frac{{{\text{pd}}}}{{2{\text{t}}\eta }}$$

C

$$\frac{{{\text{pd}}}}{{4{\text{t}}\eta }}$$

D

$$\frac{{{\text{pd}}}}{{8{\text{t}}\eta }}$$

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

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