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

W/2

W/9

8W/9

2W/3

W/2

W/9

8W/9

2W/3

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Machine Design
The notch angle of the Izod impact test specimen is

45°

10°

20°

30°

45°

10°

20°

30°

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Machine Design
In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)

2 d

2.5 d

1 d

1.5 d

2 d

2.5 d

1 d

1.5 d

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Machine Design
The objective of 'crowning' of the flat pulleys of belt drive is to

Prevent the belt from running off the pulley

Increase the power transmission capacity

Prevent the belt joint from damaging the belt surface

Increase the belt velocity

Prevent the belt from running off the pulley

Increase the power transmission capacity

Prevent the belt joint from damaging the belt surface

Increase the belt velocity

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Machine Design
The cracks in helical springs used in railway carriages usually start on the inner side of the coil because of the fact that

It is subjected to a higher cyclic loading than the outer side

It is subjected to a higher stress than the outer side

It is more stretched than the outer side during the manufacturing process

It has a lower curvature than the outer side

It is subjected to a higher cyclic loading than the outer side

It is subjected to a higher stress than the outer side

It is more stretched than the outer side during the manufacturing process

It has a lower curvature than the outer side

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Machine Design
A shaft is subjected to fluctuating loads for which the normal torque (T) and bending moment (M) are 1000 N-m and 500 N-m respectively. If the combined shock and fatigue factor for bending is 1.5 and combined shock and fatigue factor for torsion is 2, then the equivalent twisting moment for the shaft is

2000 N-m

2136 N-m

2050 N-m

2100 N-m

2000 N-m

2136 N-m

2050 N-m

2100 N-m

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Machine Design

Machine Design The notch angle of the Izod impact test specimen is

Machine Design In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)

Machine Design The objective of 'crowning' of the flat pulleys of belt drive is to

Machine Design The cracks in helical springs used in railway carriages usually start on the inner side of the coil because of the fact that

Machine Design
The notch angle of the Izod impact test specimen is

Machine Design
In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)

Machine Design
The objective of 'crowning' of the flat pulleys of belt drive is to

Machine Design
The cracks in helical springs used in railway carriages usually start on the inner side of the coil because of the fact that