A seamless cylinder of storage capacity of 0.03mᵌis subjected to an internal pressure of 21MPa. The ultimate strength of material of cylinder is 350N/mm².Determine the thickness of the cylinder if it is twice the diameter of the cylinder.

A seamless cylinder of storage capacity of 0.03mᵌis subjected to an internal pressure of 21MPa. The ultimate strength of material of cylinder is 350N/mm².Determine the length of the cylinder if it is twice the diameter of the cylinder.

A

540mm

B

270mm

C

400mm

D

350mm

A thin spherical shell of internal diameter d is subjected to an internal pressure p. If V is the storage capacity of shell, then its diameter will be

A

$${\left( {\frac{{6{\text{V}}}}{\pi }} \right)^{\frac{1}{2}}}$$

B

$${\left( {\frac{{6{\text{V}}}}{\pi }} \right)^{\frac{1}{3}}}$$

C

$${\left( {\frac{{6{\text{V}}}}{\pi }} \right)^2}$$

D

$${\left( {\frac{{6{\text{V}}}}{\pi }} \right)^3}$$

Which of the following are true statements? I: Primary storage units have faster access time and less storage capacity as compared to the secondary storage units. II: Primary storage units have sequential access. III: Secondary storage units are non-volatile storage.

A

I and II only

B

I and III only

C

II and III only

D

All I, II and III

When a material is subjected to repeated stress, it fails at stresses below the ultimate strength of the material or even below the Yield strength of material. Such type of failure is known as:

A

Creep

B

Wear

C

Fatigue

D

Brittleness

If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air leaving the L.P. cylinder (or inter-cooler pressure), then the ratio of cylinder diameters for a single acting, two stage reciprocating air compressor with complete intercooling is given by (where D₁ = Diameter of L.P. cylinder and D₂ = Diameter of H.P. cylinder)

A

$$\frac{{{{\text{D}}_1}}}{{{{\text{D}}_2}}} = {{\text{p}}_1}{{\text{p}}_2}$$

B

$$\frac{{{{\text{D}}_1}}}{{{{\text{D}}_2}}} = \frac{{{{\text{p}}_1}}}{{{{\text{p}}_2}}}$$

C

$$\frac{{{{\text{D}}_1}}}{{{{\text{D}}_2}}} = \frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}}$$

D

None of these

A thin spherical shell of internal diameter d is subjected to an internal pressure p. If $${\sigma _{\text{t}}}$$ is the tensile stress for the shell material, then thickness of shell is equal to

A

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

B

$$\frac{{{\text{pd}}}}{{2{\sigma _{\text{t}}}}}$$

C

$$\frac{{{\text{pd}}}}{{3{\sigma _{\text{t}}}}}$$

D

$$\frac{{{\text{pd}}}}{{4{\sigma _{\text{t}}}}}$$

Thickness of 8 tyres L, M, N, O, P, Q, R and S is compared. Thickness of no two tyres is same. Thickness of N is more than L but less than 6 tyres. Thickness of O is more than M but less than Q. Thickness of P is less than only two tyres. Thickness of Q is not more than P. Which of the following statement is not correct?

A

If thickness of P is 108 cm, then sum of thickness of R and S can be 219 cm

B

Thickness of R is less than S

C

Thickness of O is less than P

D

L < N < M < O < Q < P < S < R can be the correct sequence of their thickness

A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². In service the cylinder is further subjected to an internal pressure of 25MPa. Calculate the radial stress in compound cylinder. b) +3.75 c) -3.75 d) +3.75

A

-3.75

B

(45/r) ² – 1

C

(45/r) ² – 1

D

(45/r) ² – 1

A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². In service the cylinder is further subjected to an internal pressure of 25MPa. Calculate the tangential stress in compound cylinder. b) +3.75 c) -3.75 d) -3.75

A

-6.75

B

(45/r) ² + 1

C

(45/r) ² + 1

D

(45/r) ² + 1

Calculate ultimate moment and shear of effective span is 30m, live load is 9kn/m, dead load excluding self weight is 2kn/m, load factors for dead load is 1.4 for live load is 1.6 cube strength of concrete fcu is 50n/mm2 cube strength at transfer is fci is 35n/mm2, tensile strength of concrete Ec is 34kn/mm2 loss ratio ɳ is 0.85 and 8mm diameter high tensile strength fpu is 1500n/mm2 are available for use and the modulus of elasticity of high tensile wires is 200kn/mm2?

A

340 and 450kn

B

240 and 340kn

C

140 and 240kn

D

100 and 200kn

A seamless cylinder of storage capacity of 0.03mᵌis subjected to an internal pressure of 21MPa. The ultimate strength of material of cylinder is 350N/mm².Determine the thickness of the cylinder if it is twice the diameter of the cylinder.

Related Questions