Related Questions

The frictional torque transmitted in a flat pivot bearing with assumption of uniform pressure is _________ as compared to uniform wear.
A Less
B More
C Same
D None of these
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
The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is
A 1/2 × μ.W. R cosec α
B 2/3 × μ.W. R cosec α
C 3/4 × μ.W. R cosec α
D μ.W.R cosec α
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is
A $$\frac{1}{2}\mu {\text{Wcosec}}\alpha \left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)$$
B $$\frac{2}{3}\mu {\text{Wcosec}}\alpha \left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)$$
C $$\frac{1}{2}\mu {\text{Wcosec}}\alpha \left( {\frac{{{\text{r}}_1^3 - {\text{r}}_2^3}}{{{\text{r}}_1^2 - {\text{r}}_2^2}}} \right)$$
D $$\frac{2}{3}\mu {\text{Wcosec}}\alpha \left( {\frac{{{\text{r}}_1^3 - {\text{r}}_2^3}}{{{\text{r}}_1^2 - {\text{r}}_2^2}}} \right)$$
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is
A $$\frac{1}{2}\mu {\text{Wcosec}}\alpha \left( {{{\text{r}}_{\text{1}}} + {{\text{r}}_{\text{2}}}} \right)$$
B $$\frac{2}{3}\mu {\text{Wcosec}}\alpha \left( {{{\text{r}}_{\text{1}}} + {{\text{r}}_{\text{2}}}} \right)$$
C $$\frac{1}{2}\mu {\text{Wcosec}}\alpha \left( {\frac{{{\text{r}}_1^3 - {\text{r}}_2^3}}{{{\text{r}}_1^2 - {\text{r}}_2^2}}} \right)$$
D $$\frac{2}{3}\mu {\text{Wcosec}}\alpha \left( {\frac{{{\text{r}}_1^3 - {\text{r}}_2^3}}{{{\text{r}}_1^2 - {\text{r}}_2^2}}} \right)$$
The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where R = Radius of shaft and $$\alpha $$ = Semi-angle of the cone)
A $$\frac{1}{2}\mu {\text{WRcosec}}\alpha $$
B $$\frac{2}{3}\mu {\text{WRcosec}}\alpha $$
C $$\frac{3}{4}\mu {\text{WRcosec}}\alpha $$
D $$\mu {\text{WRcosec}}\alpha $$
The frictional torque transmitted in a flat pivot bearing, considering uniform pressure is
A 1/2 × μ. W. R
B 2/3 × μ. W. R
C 3/4 × μ. W. R
D μ. W. R
The frictional torque transmitted by a disc or plate clutch is same as that of
A flat pivot bearing
B flat collar bearing
C conical pivot bearing
D trapezoidal pivot bearing
The frictional torque transmitted by a cone clutch is same as that of
A flat pivot bearing
B flat collar bearing
C conical pivot bearing
D trapezoidal pivot bearing
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 $$\frac{{\text{N}}}{{{\text{Zp}}}}$$

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