Related Questions
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4
The number of slots in a 25 mm castle nut is
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4
The product of the diametral pitch and circular pitch is equal to
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4
According to Indian standard specifications, 100 H6/g5 means that the
C. Difference between the actual size and basic size is 100 mm
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4
When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the
C. Sum of the initial tension and external load applied
D. Initial tension or external load, whichever is greater
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4
Two shafts A and B under pure torsion are of identical length and identical weight and are made of the same material. The shaft A is solid and the shaft B is hollow. We can say that
A. Shaft B is better than shaft A
B. Shaft A is better than shaft B
C. Both the shafts are equally good
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4
Tensile strength of a mild steel specimen can be roughly predicted from following hardness test
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4
The shock absorbing capacity of a bolt may be increased by
A. Increasing its shank diameter
B. Decreasing its shank diameter
C. Tightening the bolt properly
D. Making the shank diameter equal to core diameter of thread
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4
In a multiple V-belt drive, if one of the belts break, then
A. Only the broken belt is replaced
B. The entire set of belts is replaced
C. The broken belt and the belt on either side of it, is replaced
D. The broken belt need not to be replaced
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4
According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be
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4
Rankine's theory of failure is applicable for following type of materials
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The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to
C. Static as well as dynamic load
D. Completely reversed load
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4
When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be
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4
The value of stress concentration factor depends upon
A. Material and geometry of the part
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4
In most machine members, the damping capacity of the material should be
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4
A localised compressive stress at the area of contact between two members is known as
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4
In Vickers hardness testing, the pyramid indentor apex is
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Maximum principal stress theory is applicable for
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4
Rankine's theory is used for
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4
The radial distance of a tooth from the pitch circle to the top of the tooth is called
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4
A double strap butt joint (with equal straps) is
A. Always in single shear
B. Always in double shear
C. Either in single shear or double shear
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4
In V-belt drive, belt touches
C. Both at bottom and sides
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A compound cylinder with inner radius 50 mm and outer radius 70 mm is made by shrinking one cylinder on to the other cylinder, the junction radius is 60 mm and the junction pressure is 1.1 N/mm². The maximum hoop stress developed in the inner cylinder is
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4
The minimum number of teeth on the pinion which will mesh with any gear without interference for 20° full depth involute teeth will be
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4
A bench vice has following type of threads
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4
The load cup of a screw jack is made separate from the head of the spindle to
A. Prevent the rotation of load being lifted
B. Enhance the load carrying capacity of the jack
C. Reduce the effort needed for lifting the working load
D. Reduce the value of frictional torque
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4
If a load W is applied instantaneously on a bar; Then the stress induced in bar will
A. Be independent of ratio of mass of load W to mass of bar (y)
B. Increase with increase in y
C. Decrease with decrease in y
D. Depend on other considerations
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4
A coupling used to connect two perfectly aligned shafts, is
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The bearings of medium series have capacity __________ over the light series.
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If the centre distance of the mating gears having involute teeth is increased, then the pressure angle
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The material commonly used for crane hooks is