The square threads are usually found on

Machine Design
The square threads are usually found on

Feed mechanism of machine tools

Screw cutting lathes

Spindles of bench vices

Railway carriage couplings

Feed mechanism of machine tools

Screw cutting lathes

Spindles of bench vices

Railway carriage couplings

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Machine Design
The number of slots in a 25 mm castle nut is

4

2

6

8

4

2

6

8

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Machine Design
Two closely coiled helical springs with stiffness k₁ and k₂ respectively are connected in series. The stiffness of an equivalent spring is given by

(k₁ - k₂)/ (k₁ + k₂)

(k₁ - k₂)/ (k₁ k₂)

(k₁ + k₂)/ (k₁ k₂)

(k₁ k₂)/ (k₁ + k₂)

(k₁ - k₂)/ (k₁ + k₂)

(k₁ - k₂)/ (k₁ k₂)

(k₁ + k₂)/ (k₁ k₂)

(k₁ k₂)/ (k₁ + k₂)

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Machine Design
In order to ensure self locking in a screw jack, it is essential that helix angle is __________ friction angle.

Equal to

Smaller than

Larger than

None of these

Equal to

Smaller than

Larger than

None of these

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Machine Design
Castle nut is a locking device in which

A hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip

One smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming

Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin spitted and bent in reverse direction at other end

A slot is cut partly is middle of nut and then slot reduced by tightening a screw

A hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip

One smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming

Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin spitted and bent in reverse direction at other end

A slot is cut partly is middle of nut and then slot reduced by tightening a screw

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Machine Design
The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to

Dynamic load

Completely reversed load

Static load

Static as well as dynamic load

Dynamic load

Completely reversed load

Static load

Static as well as dynamic load

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Machine Design

Machine Design The square threads are usually found on

Machine Design The number of slots in a 25 mm castle nut is

Machine Design Two closely coiled helical springs with stiffness k₁ and k₂ respectively are connected in series. The stiffness of an equivalent spring is given by

Machine Design In order to ensure self locking in a screw jack, it is essential that helix angle is __________ friction angle.

Machine Design Castle nut is a locking device in which

Machine Design The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to

Machine Design
The square threads are usually found on

Machine Design
The number of slots in a 25 mm castle nut is

Machine Design
Two closely coiled helical springs with stiffness k₁ and k₂ respectively are connected in series. The stiffness of an equivalent spring is given by

Machine Design
In order to ensure self locking in a screw jack, it is essential that helix angle is __________ friction angle.

Machine Design
Castle nut is a locking device in which

Machine Design
The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to