In a system subjected to damped forced vibrations, the ratio of maximum displacement to the static deflection is known as Logarithmic decrement Critical damping ratio Magnification factor Damping factor TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of the driving tensions for V-belts is __________ times that of flat belts.(Where β = Semi-angle of the groove) cosecβ cosβ sinβ secβ TRUE ANSWER : ? YOUR ANSWER : ?
The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 45° + φ/2 α = 90° + φ α = 45° - φ/2 α = 90° - φ TRUE ANSWER : ? YOUR ANSWER : ?
Critical damping is a function of Mass and natural frequency Mass and stiffness Mass and damping coefficient Damping coefficient and natural frequency TRUE ANSWER : ? YOUR ANSWER : ?
Pitch point on a cam is Any point on pitch curve Any point on pitch circle The point on cam pitch curve having the maximum pressure angle The point on cam pitch curve having the minimum pressure angle TRUE ANSWER : ? YOUR ANSWER : ?
Angle of action of cam is defined as the angle Of rotation of the cam for a definite displacement of the follower Moved by the cam from beginning of ascent to the termination of descent Through which the cam rotates during the period in which the follower remains in the highest position Moved by the cam from the instant the follower begins to rise, till it reaches its highest position TRUE ANSWER : ? YOUR ANSWER : ?
Under logarithmic decrement, the amplitude of successive vibrations are In arithmetic progression Constant In logarithmic progression In geometric progression TRUE ANSWER : ? YOUR ANSWER : ?
Length of arc of contact is given by Arc of approach / Arc of recess Arc of approach × Arc of recess Arc of approach - Arc of recess Arc of approach + Arc of recess TRUE ANSWER : ? YOUR ANSWER : ?
The Coriolis component of acceleration depends upon Both (A) and (B) None of these Velocity of slider Angular velocity of the link TRUE ANSWER : ? YOUR ANSWER : ?
The centre of gravity of a coupler link in a four bar mechanism will experience Only linear acceleration No acceleration Only angular acceleration Both linear and angular acceleration TRUE ANSWER : ? YOUR ANSWER : ?