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Engineering Mechanics Online test model paper1
Engineering Mechanics Online test model paper1
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Test your caliber
1. The unit of force in S.I. units is _____.
kilogram
newton
watt
dyne
2. The unit of work or energy in S.I. units is ____.
newton
pascal
kilogram metre
joule
3. The unit of power in S.I. units is ______.
newton metre
watt
joule
kilogram metre/sec
4. Forces are called concurrent when their lines of action meet in _____.
one point
two points
plane
perpendicular planes
5. Forces are called coplanar when all of them acting on body lie in _____.
one point
one plane
different planes
perpendicular planes
6. A force acting on a body may _____.
introduce internal stresses
balance the other forces acting on it
retard its motion
all of the above
7. Which is the correct statement about law of polygon of forces ?
if any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium
if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium
if a polygon representing forces acting at a point is closed then forces are in equilibrium
if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium
8. Effect of a force on a body depends upon _____.
magnitude
direction
position or line of action
all of the above
9. If a number of forces act simultaneously on a particle, it is possible ______.
not a replace them by a single force
to replace them by a single force
to replace them by a single force through C.G.
to replace them by a couple
10. A force is completely defined when we specify ______.
magnitude
direction
point of application
all of the above
11. If two equal forces of magnitude P act at an angle 9°, their resultant will be _____.
P/2 cos 9/2
IP sin 9/2
2P tan 9/2
IP cos 9/2
12. 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 as per the principle of _____.
forces
independence of forces
dependence of forces
resolution of forces
13. The resolved part of the resultant of two forces inclined at an angle 9 in a given direction is equal to _____.
the algebraic sum of the resolved parts of the forces in the given direction
the sum of the resolved parts of the forces in the given direction
the difference of the forces multiplied by the cosine of 9
the sum of the forces multiplied by the sine of 9
14. Which of the following do not have identical dimensions ?
Momentum and impulse
Torque and energy
Torque and work
Moment of a force and angular momentum
15. Which of the following is not the unit of distance ?
angstrom
light year
micron
milestone
16. Which of the following is not the unit of power ?
kW (kilowatt)
hp (horse power)
kcal/sec
kcal/kg sec
17. Which of the following is not the unit of work, energy and heat ?
kcal
kg m
kWhr
hp
18. Which of the following is not the unit of pressure ?
kg/cm
ata
atmosphere
newton
19. The weight of a body is due to ____.
centripetal force of earth
gravitational pull exerted by the earth
forces experienced by body in atmosphere
gravitational force of attraction towards the centre of the earth
20. The forces, which meet at one point, but their lines of action do not lie in a plane, are called
coplanar non-concurrent forces
non-coplanar concurrent forces
non-coplanar non-concurrent forces
intersecting forces
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