Brain Busters | Knowledge Tester | SCEM | Session 2019-2023
Authored by Junaid Ashraf
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49 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The unit of work or energy in S.I. units is
(a) newton
(b) pascal
(c) kilogram meter
(d) watt
(e) joule.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Forces are called concurrent when their lines of action meet in
(a) one point
(b) two points
(c) plane
(d) perpendicular planes
(e) different planes.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is the correct statement about law of polygon of forces ?
(a) 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
(b) if any number of forces acting at a point can be represented in direction and magnitude by the<br />sides of a polygon, then the forces are in equilibrium<br />
(c) if a polygon representing forces acting at a point is closed then forces are in equilibrium<br />
(d) if any number of forces acting at a point can be represented in direction and magnitude by the<br />sides of a polygon taken in order, then the forces are in equilibrium
(e) none of the above.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A force is completely defined when we specify
(a) magnitude
(b) direction
(c) point of application
(d) all of the above
(e) none of the above.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
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
(a) forces
(b) independence of forces
(c) dependence of forces
(d) balance of force
(e) resolution of forces.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The forces, which meet at one point, but their lines of action do not lie in a plane, are called
(a) coplanar non-concurrent forces
(b) non-coplanar concurrent forces<br />
(c) non-coplanar non-concurrent forces
(d) intersecting forces
(e) none of the above.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to Lami's theorem
(a) three forces acting at a point will be in equilibrium
(b) three forces acting at a point can be represented by a triangle, each side being proportional to<br />force<br />
(c) if three forces acting upon a particle are represented in magnitude and<br />direction by the sides of a triangle, taken in order, they will be in equilibrium
(d) if three forces acting at a point are in equilibrium, each force is proportional to the sine of the anglebetween the other two
(e) none of the above.
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