Theory of Machine Which of the following statements regarding laws governing the friction between dry surfaces are correct? The friction force is independent of me area of contact. All of these The friction force is directly proportional to the normal force. The friction force is dependent on the materials of the contact surfaces. The friction force is independent of me area of contact. All of these 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 frictional torque transmitted in a flat pivot bearing with assumption of uniform pressure is _________ as compared to uniform wear. More Less None of the listed here Same More Less None of the listed here Same ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is (2/3). μ W cosecα (r₁ + r₂) (2/3). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2). μ W cosecα (r₁ + r₂) (2/3). μ W cosecα (r₁ + r₂) (2/3). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2). μ W cosecα (r₁ + r₂) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where ω = Angular velocity of the cam shaft) ω (r₁ + r₂) sinθ sec2θ ω (r₁ r₂) sinθ ω (r₁ + r₂) cosθ cosec2θ ω (r₁ r₂) cosθ ω (r₁ + r₂) sinθ sec2θ ω (r₁ r₂) sinθ ω (r₁ + r₂) cosθ cosec2θ ω (r₁ r₂) cosθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a four bar chain or quadric cycle chain Two are turning pairs and two are sliding pairs Three are turning pairs and one is a sliding pair Each of the four pairs is a turning pair One is a turning pair and three are sliding pairs Two are turning pairs and two are sliding pairs Three are turning pairs and one is a sliding pair Each of the four pairs is a turning pair One is a turning pair and three are sliding pairs ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be To dip the nose and tail To dip the nose and raise the tail To raise the nose and tail To raise the nose and dip the tail To dip the nose and tail To dip the nose and raise the tail To raise the nose and tail To raise the nose and dip the tail ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS