Engineering mechanics fundamentals 2018 ghaffar sir

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FUNDAMENTALS OF ENGINEERING MECHANICS [PDC]
Presented by

Introduction of engineering mechanics
 Definition of Mechanics and its classifications
 Basic concepts
 Types of forces
 Basic laws of Mechanics
 System of units
 3 W’s??????????????????????????????
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Assessment Level 01:
 The motion of a particle round a fixed axis is
1.  translatory
2.  translatory as well as rotatry
3.  rotary
4.  circular
 Which of the following are vector quantities?
1.  Linear acceleration
2.  Linear velocity
3.  Linear displacement
4.  all of these

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 The rate of change of momentum is directly proportional to the impressed force,
and takes place in the same direction in which the force acts. This statement is
known as
1.  none of these
2.  Newton's first law of motion
3.  Newton's third law of motion
4.  Newton's second law of motion
 If a number of forces are acting at a point, their resultant will be inclined at an
angle with the horizontal, such thatθ
1.  tan = ∑Vx∑Vθ
2.  tan = ∑Vx∑Hθ
3.  tan = ∑V/∑Hθ
4.  tan = ∑H/∑Vθ 11

 The angular velocity (in rad / s) of a body rotating at N revolutions
per minute is
 1.  πN/60
 2.  2πN/60
 3.  πN/180
 4.  2πN/180
 In ideal machines, mechanical advantage is __________ velocity ratio.
 1.  less than
 2.  none of these
 3.  equal to
 4.  greater than 19

 Concurrent forces are those forces whose lines of action
 1.  none of these
 2.  meet on the same plane
 3.  meet at one point
 4.  lie on the same line
 Which of the following is a scalar quantity?
 1.  Force
 2.  Velocity
 3.  Acceleration
 4.  Speed
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 The principle of transmissibility of forces states that, when a force acts upon
a body, its effect is
1.  different at different points on its line of action
2.  maximum, if it acts at the centre of gravity of the body
3.  minimum, if it acts at the centre of gravity of the body
4.  same at every point on its line of action
 The point, through which the whole weight of the body acts, irrespective of
itsposition, is known as
1.  moment of inertia
2.  centre of mass
3.  centre of percussion
4.  centre of gravity 23

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Tips to Analyse the problem
 Careful reading
 Try relate given prob. with actual situation
 Redraw ur own figure even its given
 Try to superimpose the data
 FBD plays vital role
 Application of fundamentals principle
 Express the requirement mathematical expressions
 Always try to reason your answer
 Cross verify ur answer by any alternate method

Engineering mechanics fundamentals 2018 ghaffar sir

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Engineering mechanics fundamentals 2018 ghaffar sir