The tensile strength of the welded joint for double fillet is (where s = Leg or size of the weld, $$l$$ = Length of weld and $${\sigma _{\text{t}}}$$ = Allowable tensile stress for weld metal)

A double fillet welded joint with parallel fillet weld of length '$$l$$' and leg 's' is subjected to a tensile force 'P'. Assuming uniform stress distribution, the shear stress in the weld is given by

A

$$\frac{{\sqrt 2 {\text{P}}}}{{{\text{s}}l}}$$

B

$$\frac{{\text{P}}}{{2{\text{s}}l}}$$

C

$$\frac{{\text{P}}}{{\sqrt 2 {\text{s}}l}}$$

D

$$\frac{{2{\text{P}}}}{{{\text{s}}l}}$$

Shear strength of the welded joint for double parallel fillet is (where $$\tau $$ = Allowable shear stress for weld metal)

A

$$0.5\,{\text{s}}l\tau $$

B

$${\text{s}}l\tau $$

C

$$\sqrt 2 \,{\text{s}}l\tau $$

D

$$2\,{\text{s}}l\tau $$

In a transverse fillet welded joint, the size of weld is __________ the throat of weld.

A

0.5 times

B

Equal to

C

2 times

D

Double

In a butt welded joint, the size of weld is __________ the throat of weld.

A

0.5 times

B

Equal to

C

2 times

D

Double

When a body is subjected to biaxial stress i.e. direct stresses ($${\sigma _{\text{x}}}$$) and ($${\sigma _{\text{y}}}$$) in two mutually perpendicular planes accompanied by a simple shear stress ($${\tau _{{\text{xy}}}}$$ ), then maximum shear stress is

A

$$\frac{1}{2}\sqrt {{{\left( {{\sigma _{\text{x}}} - {\sigma _{\text{y}}}} \right)}^2} + 4\tau _{{\text{xy}}}^2} $$

B

$$\frac{1}{2}\sqrt {{{\left( {{\sigma _{\text{x}}} + {\sigma _{\text{y}}}} \right)}^2} + 4\tau _{{\text{xy}}}^2} $$

C

$$\sqrt {{{\left( {{\sigma _{\text{x}}} - {\sigma _{\text{y}}}} \right)}^2} + \tau _{{\text{xy}}}^2} $$

D

$$\sqrt {{{\left( {{\sigma _{\text{x}}} + {\sigma _{\text{y}}}} \right)}^2} + \tau _{{\text{xy}}}^2} $$

The leg of a barometric leg pump is longer than the Toricellian leg, which is about __________ metres.

A

1

B

5

C

34

D

10

When a body is subjected to direct tensile stresses ($${\sigma _{\text{x}}}$$ and $${\sigma _{\text{y}}}$$) in two mutually perpendicular directions, accompanied by a simple shear stress $${\tau _{{\text{xy}}}}{\text{,}}$$ then in Mohr's circle method, the circle radius is taken as

A

$$\frac{{{\sigma _{\text{x}}} - {\sigma _{\text{y}}}}}{2} + \tau $$

B

$$\frac{{{\sigma _{\text{x}}} + {\sigma _{\text{y}}}}}{2} + \tau $$

C

$$\frac{1}{2}\sqrt {{{\left( {{\sigma _{\text{x}}} - {\sigma _{\text{y}}}} \right)}^2} + 4\tau _{{\text{xy}}}^2} $$

D

$$\frac{1}{2}\sqrt {{{\left( {{\sigma _{\text{x}}} + {\sigma _{\text{y}}}} \right)}^2} + 4\tau _{{\text{xy}}}^2} $$

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

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

When a body is subjected to a direct tensile stress ($${\sigma _{\text{x}}}$$) in one plane accompanied by a simple shear stress ($${\tau _{{\text{xy}}}}$$ ), the maximum shear stress is

A

$$\frac{{{\sigma _{\text{x}}}}}{2} + \frac{1}{2}\sqrt {\sigma _{\text{x}}^2 + 4\tau _{{\text{xy}}}^2} $$

B

$$\frac{{{\sigma _{\text{x}}}}}{2} - \frac{1}{2}\sqrt {\sigma _{\text{x}}^2 + 4\tau _{{\text{xy}}}^2} $$

C

$$\frac{{{\sigma _{\text{x}}}}}{2} + \frac{1}{2}\sqrt {\sigma _{\text{x}}^2 - 4\tau _{{\text{xy}}}^2} $$

D

$$\frac{1}{2}\sqrt {\sigma _{\text{x}}^2 + 4\tau _{{\text{xy}}}^2} $$

Welded joint is superior to revetted joint in respect of ease of fabrication, weight and strength. Which of the following joints is the most suitable for pipes carrying fluids under high pressure and temperature?

A

Flanged joint

B

Expansion joint

C

Bell and spigot joint

D

None of these

The tensile strength of the welded joint for double fillet is (where s = Leg or size of the weld, $$l$$ = Length of weld and $${\sigma _{\text{t}}}$$ = Allowable tensile stress for weld metal)

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