A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be

Machine Design
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be

4 τ

2 τ

τ

τ/2

4 τ

2 τ

τ

τ/2

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Machine Design
The steel pulleys are __________ in weight than cast iron pulleys of the same capacity.

Moderate

None of these

Lighter

Heavier

Moderate

None of these

Lighter

Heavier

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Machine Design
The root angle of a bevel gear is equal to

Pitch angle - addendum angle

Pitch angle + addendum angle

Pitch angle + dedendum angle

Pitch angle - dedendum angle

Pitch angle - addendum angle

Pitch angle + addendum angle

Pitch angle + dedendum angle

Pitch angle - dedendum angle

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Machine Design
Whether any core is required in wire ropes

Rarely

Yes

No

Sometimes

Rarely

Yes

No

Sometimes

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Machine Design
Machine screws are

Similar to small size tap bolts except that a greater variety of shapes of heads are available

Slotted for a screw driver and generally used with a nut

Used to prevent relative motion between two parts

Similar to stud

Similar to small size tap bolts except that a greater variety of shapes of heads are available

Slotted for a screw driver and generally used with a nut

Used to prevent relative motion between two parts

Similar to stud

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Machine Design
In a flange coupling, the bolts are subjected to

Shear stress

None of these

Tensile stress

Compressive stress

Shear stress

None of these

Tensile stress

Compressive stress

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Machine Design

Machine Design The steel pulleys are __________ in weight than cast iron pulleys of the same capacity.

Machine Design The root angle of a bevel gear is equal to

Machine Design Whether any core is required in wire ropes

Machine Design Machine screws are

Machine Design In a flange coupling, the bolts are subjected to

Machine Design
The steel pulleys are __________ in weight than cast iron pulleys of the same capacity.

Machine Design
The root angle of a bevel gear is equal to

Machine Design
Whether any core is required in wire ropes

Machine Design
Machine screws are

Machine Design
In a flange coupling, the bolts are subjected to