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

2100 N-m

2050 N-m

2136 N-m

2000 N-m

2100 N-m

2050 N-m

2136 N-m

2000 N-m

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Machine Design
When a close coiled helical spring is compressed, its wire is subjected to

Shear

All of these

Compression

Tension

Shear

All of these

Compression

Tension

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Machine Design
Screws used for power transmission should have

Low efficiency

Very fine threads

Strong teeth

High efficiency

Low efficiency

Very fine threads

Strong teeth

High efficiency

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Machine Design
Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.

Four times

Sixteen times

Eight times

Twice

Four times

Sixteen times

Eight times

Twice

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Machine Design
The bearings of heavy series have capacity __________ over the medium series.

30 to 40%

20 to 30%

10 to 20%

40 to 50%

30 to 40%

20 to 30%

10 to 20%

40 to 50%

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Machine Design
When a belt drive is transmitting maximum power,

Driving tension on slack side is equal to centrifugal tension

Driving tension on tight side is twice the centrifugal tension

Effective tension is equal to centrifugal tension

Effective tension is half of centrifugal tension

Driving tension on slack side is equal to centrifugal tension

Driving tension on tight side is twice the centrifugal tension

Effective tension is equal to centrifugal tension

Effective tension is half of centrifugal tension

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Machine Design

Machine Design When a close coiled helical spring is compressed, its wire is subjected to

Machine Design Screws used for power transmission should have

Machine Design Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.

Machine Design The bearings of heavy series have capacity __________ over the medium series.

Machine Design When a belt drive is transmitting maximum power,

Machine Design
When a close coiled helical spring is compressed, its wire is subjected to

Machine Design
Screws used for power transmission should have

Machine Design
Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.

Machine Design
The bearings of heavy series have capacity __________ over the medium series.

Machine Design
When a belt drive is transmitting maximum power,