A long helical spring having a spring stiffness of 12 kN/m and number of turns 20, breaks into two parts with number of turns 10 each in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be

Machine Design
A long helical spring having a spring stiffness of 12 kN/m and number of turns 20, breaks into two parts with number of turns 10 each in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be

6 kN/m

12 kN/m

24 kN/m

30 kN/m

6 kN/m

12 kN/m

24 kN/m

30 kN/m

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Machine Design
When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced will be

8F/ πd²

6F/ πd²

4F/ πd²

16F/ 3πd²

8F/ πd²

6F/ πd²

4F/ πd²

16F/ 3πd²

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Machine Design
In a turnbuckle, if one of the rods has left hand threads, then the other rod will have

Multiple threads

Left hand threads

Right hand threads

Pointed threads

Multiple threads

Left hand threads

Right hand threads

Pointed threads

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Machine Design
In a flange coupling, the flanges are coupled together by means of

Studs

Bolts and nuts

Headless taper bolts

None of these

Studs

Bolts and nuts

Headless taper bolts

None of these

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Machine Design
When the screw in a mechanical screw jack rotates, the load kept on the top of it moves

Axially upwards or downwards

Axially upwards

None of these

Axially downwards

Axially upwards or downwards

Axially upwards

None of these

Axially downwards

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Machine Design
When compared to the rod of the same diameter and material, a wire rope

Has a much smaller load carrying capacity

Is less flexible

Does not provide much warning before failure

Provides much greater time for remedial action before failure

Has a much smaller load carrying capacity

Is less flexible

Does not provide much warning before failure

Provides much greater time for remedial action before failure

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Machine Design

Machine Design A long helical spring having a spring stiffness of 12 kN/m and number of turns 20, breaks into two parts with number of turns 10 each in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be

Machine Design When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced will be

Machine Design In a turnbuckle, if one of the rods has left hand threads, then the other rod will have

Machine Design In a flange coupling, the flanges are coupled together by means of

Machine Design When the screw in a mechanical screw jack rotates, the load kept on the top of it moves

Machine Design When compared to the rod of the same diameter and material, a wire rope

Machine Design
A long helical spring having a spring stiffness of 12 kN/m and number of turns 20, breaks into two parts with number of turns 10 each in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be

Machine Design
When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced will be

Machine Design
In a turnbuckle, if one of the rods has left hand threads, then the other rod will have

Machine Design
In a flange coupling, the flanges are coupled together by means of

Machine Design
When the screw in a mechanical screw jack rotates, the load kept on the top of it moves

Machine Design
When compared to the rod of the same diameter and material, a wire rope