mcq- Thin And Thick Shells-2

mcq- Thin And Thick Shells-2

Which one is most important in a thin shell?

1. d/t <20
2. d/t> 10
3. Stresses are uniform
4. None

(Ans:c)

Hoop strain in a thin shell is

1. σh /E
2. σl /E
3. 3 σh /E
4. None

(Ans:d)

Longitudinal  strain in a thin shell is

1. σh /E
2. σl /E
3.  σr /E
4. None

(Ans:d)

Considering σh, σl and σr, maximum shear stress will be

1. h—σl) /2
2. l— σh) /2
3. h + σr) /2
4. None

(Ans:c)

Value of σr in a thin shell is

1. pD/2t
2. pD/4t
3. pD/3t
4. None

(Ans:d)

In a thin shell which stress is negligible

1. σh
2. σl
3. σr
4. None

(Ans:c)

In a thick shell which stress is negligible

1. σh
2. σl
3. σr
4. None

(Ans:b)

Maximum shear stress in a thick shell is

1. h+ σl)/2
2. h+ σr)/2
3. h– σl)/2
4. None

(Ans:b)

Which stress is constant in a thick shell

1. σh
2. σl
3. σr
4. None

(Ans:b)

The thick shell is made from laminations to get

(a)   Increased stresses

(b)  Decreased stresses

(d) None

(Ans:c)

A thick cylinder under external fluid pressure’ p0′ will have maximum stress at the

4. None

(Ans:b)

A thick cylinder under internal fluid pressure’  pi will have maximum stress at the

4. None

(Ans:b)

A thick cylinder under pi and po will have maximum stress at the

4. None

(Ans:b)

Hoop shrinking in thick cylinders is done to achieve

(a) Increased stresses

(b)  Decreased stresses

(d) None

(Ans:c)

The maximum strain in a thick cylinder under pi will be

1. σh/E+μ σl/E
2. σh/ E+ μσr/E
3. σr/E+μ σl/E
4. None

(Ans:b)