Theory of Machine The dynamic friction is the friction experienced by a body, when the body None of these Just begins to slide over the surface of the other body Is at rest Is in motion None of these Just begins to slide over the surface of the other body Is at rest Is in motion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following mechanism is an approximate straight line motion mechanism? Watt's mechanism All of these Grasshopper mechanism Robert's mechanism Watt's mechanism All of these Grasshopper mechanism Robert's mechanism ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to G².I₂ G.I₂ I₂/G² I₂/G G².I₂ G.I₂ I₂/G² I₂/G ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Frequency of vibrations is usually expressed in Number of cycles per hour None of these Number of cycles per minute Number of cycles per second Number of cycles per hour None of these Number of cycles per minute Number of cycles per second ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A spring controlled governor is said to be unstable when the controlling force Remains constant for all radii of rotation Increases as the radius of rotation decreases Increases as the radius of rotation increases Decreases as the radius of rotation increases Remains constant for all radii of rotation Increases as the radius of rotation decreases Increases as the radius of rotation increases Decreases as the radius of rotation increases ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frictional torque transmitted in a flat collar bearing, considering uniform pressure, is (where r₁ and r₂ = External and internal radii of collar respectively) (2/3). μ W (r₁ + r₂) (1/2). μ W [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2). μ W (r₁ + r₂) (2/3). μ W [(r₁³ - r₂³)/(r₁² - r₂²)] (2/3). μ W (r₁ + r₂) (1/2). μ W [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2). μ W (r₁ + r₂) (2/3). μ W [(r₁³ - r₂³)/(r₁² - r₂²)] ANSWER DOWNLOAD EXAMIANS APP
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