7000+ Mechanical Engineering Aptitude Questions & Answers - 2

Question: 6

The maximum frictional force which comes into play when a body just begins to slide over the surface of another body is known as

(A) limiting friction

(B) kinetic friction

(C) rolling friction

(D) dynamic friction

Question: 7

Along the principal plane, subjected to maximum principal shear

(A) no shear stress acts

(B) the maximum shear stress acts

(C) the minimum shear stress acts

(D) any of the above

Question: 8

During inelastic collision of two particles, which one of the following is conserved?

(A) total kinetic energy only

(B) total linear momentum only

(C) both linear momentum and kinetic energy

(D) neither linear momentum nor kinetic energy

Question: 9

When a train is rounding a curve to prevent side thrust on the wheel flanges of cars

(A) outside rails are realized

(B) rail section is made thick on curvature

(C) opposite thrust is created to counter balance this thrust

(D) thrust eliminators are provided in the train

Question: 10

The centre of gravity of a plane lamina will not be at its geometrical centre if it is a

(A) equilateral triangle

(B) right angled triangle

(C) rectangle

(D) square