Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radii 80 mm and 40 mm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to

Machine Design
Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radii 80 mm and 40 mm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to

2W/3

W/9

W/2

8W/9

2W/3

W/9

W/2

8W/9

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Machine Design
In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)

3.5d

d + 17 mm

2d + 20 mm

2d + 13 mm

3.5d

d + 17 mm

2d + 20 mm

2d + 13 mm

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Machine Design
The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of

0.65

0.45

0.75

0.55

0.65

0.45

0.75

0.55

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Machine Design
The tension on the slack side of the belt is __________ the tension on the tight side of the belt.

None of these

Less than

Equal to

Greater than

None of these

Less than

Equal to

Greater than

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Machine Design
When a machine member is subjected to torsion, the torsional shear stress set up in the member is

Zero at both the centroidal axis and outer surface of the member

Maximum at both the centroidal axis and outer surface of the member

Zero at the centroidal axis and maximum at the outer surface of the member

Maximum at the centroidal axis and zero at the outer surface of the member

Zero at both the centroidal axis and outer surface of the member

Maximum at both the centroidal axis and outer surface of the member

Zero at the centroidal axis and maximum at the outer surface of the member

Maximum at the centroidal axis and zero at the outer surface of the member

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Machine Design
In a marine flange coupling, the thickness of flange is taken as

3d/4

d/4

d/3

d/2

3d/4

d/4

d/3

d/2

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Machine Design

Machine Design In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)

Machine Design The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of

Machine Design The tension on the slack side of the belt is __________ the tension on the tight side of the belt.

Machine Design When a machine member is subjected to torsion, the torsional shear stress set up in the member is

Machine Design In a marine flange coupling, the thickness of flange is taken as

Machine Design
In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)

Machine Design
The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of

Machine Design
The tension on the slack side of the belt is __________ the tension on the tight side of the belt.

Machine Design
When a machine member is subjected to torsion, the torsional shear stress set up in the member is

Machine Design
In a marine flange coupling, the thickness of flange is taken as