Assertion : A hollow shaft is found to be stronger than a solid shaft made of same material. Reason : The torque required to produce a given twist in hollow cylinder is greater than that required to twist a solid cylinder of same size and material.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is fa lse.D. If the assertion and reason both are false.

Assertion : A hollow shaft is found to be stronger than a solid shaft

1.	Assertion : A hollow shaft is found to be stronger than a solid shaft made of same material. Reason : The torque required to produce a given twist in hollow cylinder is greater than that required to twist a solid cylinder of same size and material.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is fa lse.D. If the assertion and reason both are false.
Answer» Correct Answer - A

Discussion

No Comment Found

Related InterviewSolutions

The upper end of a wire of radius 4 mm and length 100 cm is clamped and its other end is twisted through an angle of `30^@`. Then angle of shear isA. `12^(@)`B. `0.12^(@)`C. `1.2^(@)`D. `0.012^(@)`
When a weight of `10 kg` is suspended from a copper wire of length 3 metres and diameters `0.4 mm`, its length increases by `2.4 cm`. If the diameter of the wire is doubled, then the extension in its length will beA. `9.6 cm`B. `4.8 cm`C. `1.2 cm`D. `0.6 cm`
In a wire of length L, the increase in its length is `l`. If the length is reduced to half, the increase in its length will beA. Reduced by halfB. Increase by halfC. Remains sameD. None of these
A wire of length 2.5 m has a percentage strain of 0.012% under a tensile force. The extension produce in the wire will beA. 0.03 mmB. 0.3 mmC. 0.3 mmD. 0.03 m
Two bars A and B are stuck using an adhesive. The contact surface of the bars make an angle q with the length. Area of cross section of each bar is `S_(0)`. It is known that the adhesive yields if normal stress at the contact surface exceeds `sigma_(0)`. Find the maximum pulling force F that can be applied without detaching the bars.
Find the greatest length of steel wire that can hang vertically without breaking.Breaking stress of steel `=8.0xx10^(8) N//m^(2)`. Density of steel `=8.0xx10^(3) kg//m^(3)`. Take `g =10 m//s^(2)`.
The breaking stress of a wire is `7.2xx10^(8)N//m^(2)` and density is `78xx10^(2) kg//m^(3)`. The wire is held vertically to the rigid support. The maximum length so that the wire does not break isA. `9.94xx10^(3)m`B. `9.4xx10^(3)m`C. `94xx10^(3)`mD. `940xx10^(3)`m
Elasticity is the property of material body by virtue of which a bodyA. occupies minimum surface areaB. is in equilibriumC. opposes its deformationD. attracts other bodies
The property of a body by virtue of which it changes its dimensions permanently is calledA. plasticityB. elasticityC. rigidityD. None of these
The nature of elastic forces by virtue of which a body possess the property of elasticity isA. electromagneticB. gravitationalC. weakD. all of the above

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment