| 1. | If the tearing efficiency of a riveted joint is 50%, then the ratio of diameter of rivet to the pitch is ? | |
|
0.20
|
||
|
0.30
|
||
|
0.50
|
||
|
0.70
|
||
View Answer
Discuss in Forum
Report Question| 2. | In a turnbuckle, if one of the rods has left hand threads, then the other rod will have ? | |
|
right hand threads
|
||
|
left hand threads
|
||
|
multiple threads
|
||
|
pointed threads
|
||
| 3. | An elastic bar is fixed at the upper end and loaded at the lower end by a falling weight. The shock load produced can be reduced by ? | |
|
increasing the length of bar
|
||
|
decreasing the cross-sectional area of the bar
|
||
|
decreasing the modulus of elasticity of the bar
|
||
|
all of the above
|
||
| 4. | The lower deviation is the algebraic difference between the ? | |
|
minimum limit and the basic size
|
||
|
maximum limit and the basic size
|
||
|
actual size and the corresponding basic size
|
||
|
none of the above
|
||
| 5. | A metal pipe of 1m diameter contains a fluid having a pressure of IN/mm². If the permissible tensile stress in the metal is 20N/mm², then the thickness of the metal required for making the pipe will be ? | |
|
5mm
|
||
|
10mm
|
||
|
15mm
|
||
|
25mm
|
||
| 6. | Which of the following cotter joint will be used to connect strap end of a connecting rod ? | |
|
Spigot and socket cotter joint
|
||
|
Sleeve and cotter joint
|
||
|
Gib and cotter joint
|
||
|
any one of these
|
||
| 7. | A locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called ? | |
|
castle nut
|
||
|
jam nut
|
||
|
ring nut
|
||
|
sawn nut
|
||
| 8. | The smallest diameter of an external or internal screw thread is known as ? | |
|
minor diameter
|
||
|
major diameter
|
||
|
pitch diameter
|
||
|
none of these
|
||
| 9. | Stress concentration is caused due to ? | |
|
variations in load acting on a member
|
||
|
variations in properties of materials in a member
|
||
|
abrupt change of cross-section
|
||
|
all of these
|
||
| 10. | If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value ? | |
|
Maximum principal stress theory
|
||
|
Maximum shear stress theory
|
||
|
Maximum strain energy theory
|
||
|
Maximum distortion energy theory
|
||