The frictional torque transmitted by a cone clutch is same as that of

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 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 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 conical 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 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 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 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 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 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

A clutch is usually designed to transmit maximum torque which is

A

Equal to the maximum engine torque

B

80% of the maximum torque

C

150% of the maximum torque

D

None of the above

The frictional torque transmitted by a cone clutch is same as that of

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