Theory of Machine The number of centers in a crank driven slider crank mechanism is 4 6 2 4 6 2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r₁ and r₂ = External and internal radii of collar respectively) (1/2) μ W [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2) μ W (r₁ + r₂) (2/3) μ W (r₁ + r₂) (2/3) μ W [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2) μ W [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2) μ W (r₁ + r₂) (2/3) μ W (r₁ + r₂) (2/3) μ W [(r₁³ - r₂³)/(r₁² - r₂²)] ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the 2 1.5 0.5 1 2 1.5 0.5 1 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a four stroke I.C. engine, the turning moment during the compression stroke is Negative during major portion of the stroke Positive throughout Positive during major portion of the stroke Negative throughout Negative during major portion of the stroke Positive throughout Positive during major portion of the stroke Negative throughout ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The example of successfully constrained motion is a Piston reciprocating inside an engine cylinder Motion of an I.C. engine valve All of these Motion of the shaft between a footstep bearing Piston reciprocating inside an engine cylinder Motion of an I.C. engine valve All of these Motion of the shaft between a footstep bearing ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will Become equal to R/2 Become equal to 2R Remain same as before Become equal to R/4 Become equal to R/2 Become equal to 2R Remain same as before Become equal to R/4 ANSWER DOWNLOAD EXAMIANS APP
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