Home

What is the correct answer?

4

Open pairs are those which have

A. Point or line contact between the two elements when in motion

B. Surface contact between the two elements when in motion

C. Elements of pairs not held together mechanically

D. Two elements that permit relative motion

Correct Answer :

C. Elements of pairs not held together mechanically


Related Questions

In automobiles the power is transmitted from gear box to differential… A simple spring-mass vibrating system has a natural frequency of fn. If… When the sleeve of a Porter governor moves upwards, the governor speed When the nature of contact between the elements of a pair is such that… The radius of a friction circle for a shaft rotating inside a bearing… When the speed of the engine fluctuates continuously above and below the… A friction circle is a circle drawn when a journal rotates in a bearing.… A rotor which is balanced statically but not dynamically is supported… When the belt is stationary, it is subjected to some tension known as… Instantaneous center of rotation of a link in a four bar mechanism lies… The type of coupling used to join two shafts whose axes are neither in… Davis steering gear consists of The primary unbalanced force is maximum when the angle of inclination… When a mass of a critically damped single degree of freedom system is… Relationship between the number of links (L) and number of pairs (P) is The size of a gear is usually specified by The velocity of a flat-faced follower when it has contact with the flank… The frequency of oscillation of a compound pendulum is Angle of ascent of cam is defined as the angle A rigid body, under the action of external forces, can be replaced by… The velocity of the rubbing surface __________ with the distance from… If the number of links in a mechanism is equal to l, then the numbers… A shaft has two heavy rotors mounted on it. The transverse natural frequencies,… The pressure angle of a cam depends upon A pantograph is a mechanism with In a spring controlled governor, when the controlling force ________ as… Ball and a Socket forms a A motor car moving at a certain speed takes a left turn in a curved path.… If some links are connected such that motion between them can take place… The motion of a shaft in a circular hole is an example of