Theory of Machine When the two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as a Lower pair Higher pair Force-closed pair Self-closed pair Lower pair Higher pair Force-closed pair Self-closed pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In railway axle boxes, the bearing used is Double row spherical roller bearing Cylindrical roller bearing Deep groove ball bearing Double row self aligning ball bearing Double row spherical roller bearing Cylindrical roller bearing Deep groove ball bearing Double row self aligning ball bearing ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The contact ratio is given by (Length of the path of approach)/(Circular pitch) (Length of path of recess)/(Circular pitch) (Length of the arc of approach)/cosφ (Length of the arc of contact)/(Circular pitch) (Length of the path of approach)/(Circular pitch) (Length of path of recess)/(Circular pitch) (Length of the arc of approach)/cosφ (Length of the arc of contact)/(Circular pitch) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The Whitworth quick return motion mechanism is formed in a slider crank chain when the Coupler link is fixed Slider is a fixed link Longest link is a fixed link Smallest link is a fixed link Coupler link is fixed Slider is a fixed link Longest link is a fixed link Smallest link is a fixed link ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω₁ rad/s in the clockwise direction and the link OB turns with angular velocity ω₂ rad/s in the anticlockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O) (ω₁ + ω₂) r (ω₁ - ω₂) 2r (ω₁ - ω₂) r ω₁.ω₂.r (ω₁ + ω₂) r (ω₁ - ω₂) 2r (ω₁ - ω₂) r ω₁.ω₂.r ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The Coriolis component of acceleration leads the sliding velocity by 90° 45° 135° 180° 90° 45° 135° 180° ANSWER DOWNLOAD EXAMIANS APP
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