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

τ/2

2 τ

τ

4 τ

τ/2

2 τ

τ

4 τ

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Machine Design
A compound belt drive is used when

Shafts are arranged parallel and rotate in the opposite directions

Shafts are arranged parallel and rotate in the same directions

None of these

Shafts are arranged at right angles and rotate in one definite direction

Shafts are arranged parallel and rotate in the opposite directions

Shafts are arranged parallel and rotate in the same directions

None of these

Shafts are arranged at right angles and rotate in one definite direction

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Machine Design
According to maximum normal stress theory, the maximum normal stress in the shaft is

(1/2) × √(σ² × 4τ²)

σ + √(σ² × 4τ²)

(1/2) × [σ + √(σ² × 4τ²)]

√(σ² × 4τ²)

(1/2) × √(σ² × 4τ²)

σ + √(σ² × 4τ²)

(1/2) × [σ + √(σ² × 4τ²)]

√(σ² × 4τ²)

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Machine Design
In second type of levers,

Fulcrum is in between the load and effort

Load is in between the fulcrum and effort

None of these

Effort is in between the fulcrum and load

Fulcrum is in between the load and effort

Load is in between the fulcrum and effort

None of these

Effort is in between the fulcrum and load

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Machine Design
If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value?

Maximum shear stress theory

Maximum strain energy theory

Maximum distortion energy theory

Maximum principal stress theory

Maximum shear stress theory

Maximum strain energy theory

Maximum distortion energy theory

Maximum principal stress theory

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Machine Design
The groove angle of pulleys for V-belt is

340 to 360

300 to 320

420 to 450

More than 400

340 to 360

300 to 320

420 to 450

More than 400

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Machine Design

Machine Design A compound belt drive is used when

Machine Design According to maximum normal stress theory, the maximum normal stress in the shaft is

Machine Design In second type of levers,

Machine Design If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value?

Machine Design The groove angle of pulleys for V-belt is

Machine Design
A compound belt drive is used when

Machine Design
According to maximum normal stress theory, the maximum normal stress in the shaft is

Machine Design
In second type of levers,

Machine Design
If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value?

Machine Design
The groove angle of pulleys for V-belt is