| 1. | What is the S.I unit of Poisson’s ratio ? | |
|
kN/mm²
|
||
|
N/mm²
|
||
|
mm
|
||
|
Unitless
|
||
View Answer
Discuss in Forum
Report Question| 2. | Maximum principal stress theory was postulated by ________ ? | |
|
ST Venant
|
||
|
Mohr
|
||
|
Rankine
|
||
|
Tresca
|
||
| 3. | The equivalent length of the column, when both the ends are hinged is ________ ? | |
|
l
|
||
|
l /2
|
||
|
l/4
|
||
|
2l
|
||
| 4. | What is the ratio of the Euler’s buckling loads of column having (i) both ends fixed and (ii) one end fixed and other end free is ? | |
|
4:1
|
||
|
16: 1
|
||
|
1:4
|
||
|
2:1
|
||
| 5. | The thin walled cylindrical vessel has the wall thickness t and diameter d is subjected to the gauge pressure of p. If the diameter of the vessel is doubled, then what is the ratio of hoop stress as compared to initial value ? | |
|
1:1
|
||
|
2:1
|
||
|
1:2
|
||
|
1:4
|
||
| 6. | A metal pipe is subjected to internal pressure of 10 kgf/cm². If the permissible tensile stress in the metal is 200 kgf/cm² and the thickness of the pipe is 2.5 cm. What is the diameter of the metal pipe ? | |
|
10
|
||
|
100
|
||
|
200
|
||
|
20
|
||
| 7. | Which is the correct option for the stress experienced by the shaft when the power transmission in shaft takes place through the gears ? | |
|
Varying bending and constant torsional stresses
|
||
|
Constant bending and varying torsional stresses
|
||
|
Torsional stress
|
||
|
Bending stress only
|
||
| 8. | A beam of diameter 75 mm has a span length of 10 m is subjected to uniform distributed load of w kN/m. The maximum value of bending stress produced is 6.75 kN-m. What is the value of distributed load, if the beam is simply supported ? | |
|
1.5
|
||
|
0.54
|
||
|
2
|
||
|
5.4
|
||
| 9. | A steel bar of dimension 10 mm x 1 mm x 1 mm is free to expand is heated from 15 °C to 25 °C What stress shall be developed ? | |
|
Tensile stress
|
||
|
No stress
|
||
|
Shear stress
|
||
|
Compressive stress
|
||
| 10. | For a pure substance in gaseous phase to be liquefied, the gas has to undergo initial cooling below the ________ ? | |
|
critical state
|
||
|
saturated liquid line
|
||
|
saturated vapour line
|
||
|
triple point line
|
||