Related Questions

According to Euler's column theory, the crippling load for a column of length (l) fixed at both ends is __________ the crippling load for a similar column hinged at both ends.
A Equal to
B Two times
C Four times
D Eight times
The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.
A Working
B Damaging
C Allowable
D None of these
The property of a bearing material which has the ability to accommodate shaft deflections and bearing inaccuracies by plastic deformation without excessive wear and heating, is known as
A Bondability
B Embeddability
C Comformability
D Fatigue strength
Due to which of the following reasons excessive bond width in control systems should be avoided ?
A It leads to slow speed of response
B It leads to low relative stability
C Noise is proportional to band width
D None of the above
The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing and R = Radius of bearing surface)
A $$\frac{1}{2}$$μWR
B $$\frac{2}{3}$$μWR
C $$\frac{3}{4}$$μWR
D μWR
When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.
A 10 times
B 5 times
C 15 times
D 20 times
If p = bearing pressure on projected bearing area, Z = absolute viscosity of lubricant and N = speed of journal, then the bearing characteristic number is given by
A $$\frac{{{\text{ZN}}}}{{\text{p}}}$$
B $$\frac{{\text{p}}}{{{\text{ZN}}}}$$
C $$\frac{{\text{Z}}}{{{\text{pN}}}}$$
D $$\frac{{\text{N}}}{{{\text{Zp}}}}$$
The ratio of crippling loads of a column having both the ends fixed to the column having both the ends hinged, is
A 1
B 2
C 3
D 4
According to Euler's column theory, the crippling load for a column of length ($$l$$) with one end fixed and the other end hinged, is
A $$\frac{{{\pi ^2}{\text{E}}I}}{{{l^2}}}$$
B $$\frac{{{\pi ^2}{\text{E}}I}}{{4{l^2}}}$$
C $$\frac{{2{\pi ^2}{\text{E}}I}}{{{l^2}}}$$
D $$\frac{{4{\pi ^2}{\text{E}}I}}{{{l^2}}}$$
The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be
A Same in both cases
B 2 times more
C 3 times more
D 4 times more

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