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

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

2050 N-m

2136 N-m

2100 N-m

2000 N-m

2050 N-m

2136 N-m

2100 N-m

2000 N-m

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Machine Design
The distribution of the forces along the length of key fitted in a shaft

Varies linearly

Varies exponentially, being more near the torque-input end

Is uniform throughout

Varies exponentially, being less near the torque-input end

Varies linearly

Varies exponentially, being more near the torque-input end

Is uniform throughout

Varies exponentially, being less near the torque-input end

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Machine Design
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

Head

Middle

Thread

Shank

Head

Middle

Thread

Shank

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

Belts are available in sets

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

New and old belts will cause vibrations

Only one belt cannot be fitted with other used belts

Belts are available in sets

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

New and old belts will cause vibrations

Only one belt cannot be fitted with other used belts

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Machine Design
Which of the following cotter joint will be used to connect strap end of a connecting rod?

Spigot and socket cotter joint

Gib and cotter joint

Sleeve and cotter joint

Any one of these

Spigot and socket cotter joint

Gib and cotter joint

Sleeve and cotter joint

Any one of these

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Machine Design
The piston rod of a steam engine is usually connected to the cross-head by means of

Universal joint

Knuckle joint

Cotter joint

Bolted joint

Universal joint

Knuckle joint

Cotter joint

Bolted joint

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Machine Design

Machine Design The distribution of the forces along the length of key fitted in a shaft

Machine Design When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

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 Which of the following cotter joint will be used to connect strap end of a connecting rod?

Machine Design The piston rod of a steam engine is usually connected to the cross-head by means of

Machine Design
The distribution of the forces along the length of key fitted in a shaft

Machine Design
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

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
Which of the following cotter joint will be used to connect strap end of a connecting rod?

Machine Design
The piston rod of a steam engine is usually connected to the cross-head by means of