Related Questions

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)
ক $$\frac{1}{2}$$μWR
খ $$\frac{2}{3}$$μWR
গ $$\frac{3}{4}$$μWR
ঘ μWR
The frictional torque transmitted in a flat pivot bearing with assumption of uniform pressure is _________ as compared to uniform wear.
ক Less
খ More
গ Same
ঘ None of these
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is
ক $$\frac{1}{2}\mu {\text{Wcosec}}\alpha \left( {{{\text{r}}_{\text{1}}} + {{\text{r}}_{\text{2}}}} \right)$$
খ $$\frac{2}{3}\mu {\text{Wcosec}}\alpha \left( {{{\text{r}}_{\text{1}}} + {{\text{r}}_{\text{2}}}} \right)$$
গ $$\frac{1}{2}\mu {\text{Wcosec}}\alpha \left( {\frac{{{\text{r}}_1^3 - {\text{r}}_2^3}}{{{\text{r}}_1^2 - {\text{r}}_2^2}}} \right)$$
ঘ $$\frac{2}{3}\mu {\text{Wcosec}}\alpha \left( {\frac{{{\text{r}}_1^3 - {\text{r}}_2^3}}{{{\text{r}}_1^2 - {\text{r}}_2^2}}} \right)$$
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)
ক $$\frac{1}{2}\mu {\text{WRcosec}}\alpha $$
খ $$\frac{2}{3}\mu {\text{WRcosec}}\alpha $$
গ $$\frac{3}{4}\mu {\text{WRcosec}}\alpha $$
ঘ $$\mu {\text{WRcosec}}\alpha $$
The frictional torque transmitted in a conical pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.
ক Less
খ More
গ Same
ঘ None of these
The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is
ক 1/2 × μ.W. R cosec α
খ 2/3 × μ.W. R cosec α
গ 3/4 × μ.W. R cosec α
ঘ μ.W.R cosec α
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is
ক $$\frac{1}{2}\mu {\text{Wcosec}}\alpha \left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)$$
খ $$\frac{2}{3}\mu {\text{Wcosec}}\alpha \left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)$$
গ $$\frac{1}{2}\mu {\text{Wcosec}}\alpha \left( {\frac{{{\text{r}}_1^3 - {\text{r}}_2^3}}{{{\text{r}}_1^2 - {\text{r}}_2^2}}} \right)$$
ঘ $$\frac{2}{3}\mu {\text{Wcosec}}\alpha \left( {\frac{{{\text{r}}_1^3 - {\text{r}}_2^3}}{{{\text{r}}_1^2 - {\text{r}}_2^2}}} \right)$$
In a flat collar pivot bearing, the moment due to friction is proportional to
ক $$\frac{{{\text{r}}_1^2 - {\text{r}}_2^2}}{{{{\text{r}}_1} - {{\text{r}}_2}}}$$
খ $$\frac{{{\text{r}}_1^2 - {\text{r}}_2^2}}{{{{\text{r}}_1} + {{\text{r}}_2}}}$$
গ $$\frac{{{\text{r}}_1^3 - {\text{r}}_2^3}}{{{\text{r}}_1^2 - {\text{r}}_2^2}}$$
ঘ $$\frac{{{\text{r}}_1^3 - {\text{r}}_2^3}}{{{{\text{r}}_1} - {{\text{r}}_2}}}$$
The frictional torque transmitted by a disc or plate clutch is same as that of
ক flat pivot bearing
খ flat collar bearing
গ conical pivot bearing
ঘ trapezoidal pivot bearing
The frictional torque transmitted by a cone clutch is same as that of
ক flat pivot bearing
খ flat collar bearing
গ conical pivot bearing
ঘ trapezoidal pivot bearing

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