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- Question 1 of 20
The effect of increasing the stiffness of springs of centrifugal clutch isCorrectIncorrect
- Question 2 of 20
Creep of belt can be controlled byCorrectIncorrect
- Question 3 of 20
The differential screw is used in aCorrectIncorrect
- Question 4 of 20
Multistart threads are used to getCorrectIncorrect
- Question 5 of 20
Consider the following statements :
In an epicyclic gear train with 96 and 36 number of teeth on the annulus and sun respectively,
1.Planet must hove 30 test.
2.There must be 3 or 4 planets around the circumference.
3.Planets can never be input or output links.
4.Module of the sun should. be more then the rest.
Which of these statement is are correct ?CorrectIncorrect
- Question 6 of 20
Stub tooth isCorrectIncorrect
- Question 7 of 20
Which of the following screw threads is adopted for power transmission in either direction?CorrectIncorrect
- Question 8 of 20
In hydrodynamic bearingsCorrectIncorrect
- Question 9 of 20
The piston pin bearings in heavy duty diesel engines areCorrectIncorrect
- Question 10 of 20
The magnitude of shear stress induced in a shaft due to applied torque variesCorrectIncorrect
- Question 11 of 20
A piece of material is subjected to two perpendicular tensile stresses of 70MPa and 10MPa. The magnitude of the resultant stress on a plane in which the maximum stress occurs isCorrectIncorrect
- Question 12 of 20
Which of the following hardness tests uses the principle of measurement of depth of indentation for obtaining the hardness value of the material being tested ?CorrectIncorrect
- Question 13 of 20
A copper rod,400mm long is pulled in tension to a length of 401.2 mm by applying a tensile load of 330 MPa.If the deformation is entirely elastic, the Young’s modulus of copper isCorrectIncorrect
- Question 14 of 20
A bar of copper and steel form a composite system which is heated through a temperature of 40°C. The stress induced in the copper bar isCorrectIncorrect
- Question 15 of 20
The buckling load for a column hinged at both ends is 10 kN. If the ends are fixed, the buckling load changes toCorrectIncorrect
- Question 16 of 20
A beam with a rectangular section of 120mm x 60 mm, designed to be placed vertically is placed horizontally by mistake. If the maximum stress is to be limited, the reduction in load carrying capacity would beCorrectIncorrect
- Question 17 of 20
If a solid circular shaft of steel 2 cm in diameter is subjected to a permissible shear stress 10kN/cm2,then the value of the twisting moment (Tr) will beCorrectIncorrect
- Question 18 of 20
A salt shaft of diameter 100mm, length 1000 mm is subjected to a twisting moment T. The maximum shear stress developed in the shaft is 60 N/mm2. A hole of 50mm diameter is now drilled throughout the length of the shaft. To develop a maximum shear stress of 60N/mm2 in the hollow shaft, the torque T must be reduced byCorrectIncorrect
- Question 19 of 20
A spring with 25 active coils cannot be accommodated within a given space.Hence 6 coils of the spring are cut. What is the stiffness of the new spring ?CorrectIncorrect
- Question 20 of 20
If both the mean coil diameter and wire diameter of a helical compression or tension spring be doubled, then the deflection of the spring close coiled under same applied load willCorrectIncorrect
Leaderboard: IES Mechanical 7
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