A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

Machine Design
A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

2.5

2.8

3.5

3

2.5

2.8

3.5

3

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

138 d

168 d

124 d

151 d

138 d

168 d

124 d

151 d

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
In replacing the V-belts, a complete set of new belts is used instead of replacing a single damaged belt because

Only one belt cannot be fitted with other used belts

New and old belts will cause vibrations

The new belt will carry more than its share and result in short life

Belts are available in sets

Only one belt cannot be fitted with other used belts

New and old belts will cause vibrations

The new belt will carry more than its share and result in short life

Belts are available in sets

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio

Remains unchanged

Decreases

None of these

Increases

Remains unchanged

Decreases

None of these

Increases

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
The stress in the bar when the load is applied suddenly is __________ as compared to the stress induced due to gradually applied loads.

Three times

Four times

Same

Double

Three times

Four times

Same

Double

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
A key made from a cylindrical disc having segmental cross-section, is known as

Woodruff key

Flat saddle key

Gib head key

Feather key

Woodruff key

Flat saddle key

Gib head key

Feather key

ANSWER DOWNLOAD EXAMIANS APP

Machine Design

Machine Design If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

Machine Design In replacing the V-belts, a complete set of new belts is used instead of replacing a single damaged belt because

Machine Design If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio

Machine Design The stress in the bar when the load is applied suddenly is __________ as compared to the stress induced due to gradually applied loads.

Machine Design A key made from a cylindrical disc having segmental cross-section, is known as

Machine Design
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

Machine Design
In replacing the V-belts, a complete set of new belts is used instead of replacing a single damaged belt because

Machine Design
If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio

Machine Design
The stress in the bar when the load is applied suddenly is __________ as compared to the stress induced due to gradually applied loads.

Machine Design
A key made from a cylindrical disc having segmental cross-section, is known as