Home » Mechanical Engineering Basic Online Test » Mechanical Engineering Basic Online Test – Multiple Choice Questions and Answers Mechanical Engineering Basic Online Test – Multiple Choice Questions and Answers Posted on April 29, 2017January 4, 2016 by engineer1 Comment 1. During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact equal to less than equal and opposite to greater than 2. The unit of power in S.I. units is horsepower watt joule kg-m 3. Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to twice the area of the triangle area of the triangle half the area of the triangle none of these 4. The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as principle of transmissibility of forces principle of independence of forces principle of resolution of forces none of these 5. When two elastic bodies collide with each other, the two bodies will momentarily come to rest after collision the two bodies begin to regain their original shape the two bodies tend to compress and deform at the surface of contact all of the above 6. The bodies which rebound after impact are called inelastic bodies neither elastic nor inelastic bodies elastic bodies none of these 7. The law of motion involved in the recoil of gun is Newton’s third law of motion Newton’s second law of motion Newton’s first law of motion none of these 8. The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as dynamic friction coefficient of friction limiting friction static friction 9. The velocity ratio of a first system of pulleys with 4 pulleys is 4 8 16 32 10. One watt is equal to 0.1 joule/s 1 joule/s 10 joules/s 100 joules/s Loading … Question 1 of 10

Ans of question 1 is wrong…

The formula for first system of pulley =2n