- $$\frac{1}{2}\mu {\text{WRcosec}}\alpha $$
- $$\frac{2}{3}\mu {\text{WRcosec}}\alpha $$
- $$\frac{3}{4}\mu {\text{WRcosec}}\alpha $$
- $$\mu {\text{WRcosec}}\alpha $$
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When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel and $$\varphi $$ = Pressure angle)?
Answer: Option 4 Let'
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When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.?
Answer: Option 3 Let'
1 Answers 1 views
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)?
Answer: Option 1 Let'
1 Answers 1 views
The frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is (Where μ = Coefficient of friction, W = Load over the bearing, R = Radius of bearing)?
Answer: Option 4 Let'
1 Answers 1 views
The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft and $$I$$ = Mass moment of inertia of the disc attached at the end of a shaft)?
Answer: Option 3 Let'
1 Answers 1 views
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft and $$\tan \varphi $$ = Coefficient of friction between the shaft and bearing)?
Answer: Option 1 Let'
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The torque transmitted by a solid shaft of diameter (D) is (where $$\tau $$ = Maximum allowable shear stress)?
Answer: Option 2 Let'
1 Answers 2 views
The torque required to overcome viscous resistance of a footstep bearing is (where μ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film)?
Answer: Option 4 Let'
1 Answers 7 views
Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure, ps = Pressure of saturated air, pd = Pressure at dry bulb temperature, pw = Saturation pressure corresponding to wet bulb temperature, and μ = Degree of saturation)?
Answer: Option 2 Relative humidity is given by μ/[1 - (1 - μ) (Ps/Pb)] where pv = Partial pressure of water vapour, pb = Barometric pressure, ps = Pressure of saturated air, pd...
1 Answers 1 views