Theory of Machine Which of the following statements regarding laws governing the friction between dry surfaces are correct? All of these The friction force is independent of me area of contact. The friction force is directly proportional to the normal force. The friction force is dependent on the materials of the contact surfaces. All of these The friction force is independent of me area of contact. The friction force is directly proportional to the normal force. The friction force is dependent on the materials of the contact surfaces. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The approximate straight line mechanism is a Four bar linkage 8 bar linkage 3 bar linkage 6 bar linkage Four bar linkage 8 bar linkage 3 bar linkage 6 bar linkage ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The height of a Watt's governor is Inversely proportional to speed Directly proportional to speed Inversely proportional to (speed)² Directly proportional to (speed)² Inversely proportional to speed Directly proportional to speed Inversely proportional to (speed)² Directly proportional to (speed)² ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Higher pairs are those which have Two elements that permit relative motion Elements of pairs not held together mechanically Surface contact between the two elements when in motion Point or line contact between the two elements when in motion Two elements that permit relative motion Elements of pairs not held together mechanically Surface contact between the two elements when in motion Point or line contact between the two elements when in motion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Rectangular bar in a rectangular hole is the following type of pair Incompletely constrained motion Completely constrained motion Partially constrained motion Freely constrained motion Incompletely constrained motion Completely constrained motion Partially constrained motion Freely constrained motion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is (1/2). μ W cosecα (r₁ + r₂) (1/2). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] (2/3). μ W cosecα (r₁ + r₂) (2/3). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2). μ W cosecα (r₁ + r₂) (1/2). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] (2/3). μ W cosecα (r₁ + r₂) (2/3). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] ANSWER DOWNLOAD EXAMIANS APP
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