In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links_________________?
(A) will remain same
(B) will change
(C) could change or remain unaltered depending oh which link is fixed
(D) will not occur
(D) none of the above
In a darg link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is _______________?
(A) equal to sum of other two
(B) greater than sum of other two
(C) less than sum of other two
(D) there is no such relationship
(D) none of the above
Kinematic pairs are those which have___________________?
(A) two elements held together mechani-cally
(B) two elements having relative motion
(C) two elements having Coroili’s com-ponent
(D) minimum of two instantaneous centres
(D) all of the above
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is________________________?
(A) 95 mm
(B) slightly less than 95 mm
(C) slightly more than 95 mm
(D) 45 mm
(D) none of the above
Inertia force acts___________________?
(A) perpendicular to the accel< force
(B) along the direction of accel* force
(C) opposite to the direction of ace ing force
(D) in any direction w.r.t. accel* force depending on the magnit two
(D) none of the above
In S.H.M., acceleration is proportional to _________________?
(A) velocity
(B) displacement
(C) rate of change of velocity
(D) all of the above
(D) none of the above
In S.H.M., the velocity vector w.r.t. displacement vector _________________?
(A) leads by 90°
(B) lags by 90°
(C) leads by 180°
(D) are in phase
(D) could be anywhere.
Polar moment of inertia (IP) of ac disc is to ht determined by suspen by a wire and noting the frequei oscillations (f) ?
(A) Ipocf
(B) Ipocf
(C) Ip oc j
(D) Ipoc-
(D) none of the above
The Bifilar suspension method is used to determine__________________?
(A) natural frequency of vibration
(B) position of balancing weights
(C) moment of inertia
(D) centripetal acceleration’
(D) angular acceleration of a body
According to Dalton’s law, the total pres sure of the mixture of gases is equal to________________?
(A) greater of the partial pressures of all
(B) average of the partial pressures of all
(C) sum of the partial pressures of all
(D) sum of the partial pressures of all divided by average molecular weight
(D) atmospheric pressure