Mechanical Engineering MCQs

Page No. 120

A chain comprises of 5 links having 5 joints. Is it kinematic chain ?


ayes


bno


cit is a marginal case


ddata are insufficient to determine it


View Answer no

Peaucellier mechanism has__________________?


aeight links


bsix links


cfour links


dtwelve links


View Answer eight links

The approximate straight line mechanism is a____________________?


afour bar linkage


b6 bar linkage


c8 bar linkage


d3 bar linkage


View Answer four bar linkage

If the opposite links of a four bar linkage are equal, the links will always form a_________________?


atriangle


brectangle


cparallelogram


dpentagon


View Answer parallelogram

A panto graph is a mechanism with___________________?


alower pairs


bhigher pairs


crolling pairs


dturning pairs


View Answer lower pairs

Lower pairs are those which have___________________?


apoint or line contact between the two elements when in motion


bsurface contact between the two elements when in motion


celements of pairs not -held together mechanically


dtwo elements that permit relative motion



Kinematic pairs are those which have__________________?


apoint or line contact between the two elements when in motion


bsurface contact between the two ele-ments when in motion


celements of pairs not held together mechanically


dtwo elements that permit relative mo-tion



A point on a link connecting double slider crank chain traces a____________________?


astraight line


bcircle


cparabola


dellipse


View Answer ellipse

Typewriter constitutes__________________?


amachine


bstructure


cmechanism


dinversion


View Answer mechanism

Which of the following is false statement in respect of differences between machine and structure___________________?


aMachines transmit mechanical work, whereas structures transmit forces


bIn machines, relative motion exists be-tween its members, whereas same does hot exist in case of structures


cMachines modify movement and work, whereas structures modify forces


dEfficiency of machines as well as structures is below 100%



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