Machine Design
The notch sensitivity q is expressed in terms of fatigue stress concentration factor Kf and theoretical stress concentration factor Kt as

(Kt + 1)/ (Kf + 1)
(Kt - 1)/ (Kf - 1)
(Kf - 1)/ (Kt - 1)
(Kf + 1)/ (Kt + 1)

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
In oilness bearings

Do not require external supply of lubricant
The oil film pressure is generated only by the rotation of the journal
The oil film is maintained by supplying oil under pressure
Grease required to be applied after some intervals

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
The face of the tooth is the

Width of the tooth measured along the pitch circle
Surface of the tooth above the pitch surface
Surface of the top of the tooth
Surface of the tooth below the pitch surface

ANSWER DOWNLOAD EXAMIANS APP