Question19:-How many official languages of U.N.O. 7
‏6-ھ‎
‎B:-7
‎5
‎D:-4
‎Correct Answer:- Option-A
Question20:-Which is the "Study of mosses" dealt with 7
A:-Bromatology
B:-Bryology
C:-Bionomics
D:-Batology
Correct Answer:- Option-B
Question21:-If a force acts on a body, it sets up some resistance to the deformation. This resistance is known as
A:-Stress
B:-Strain
C:-Elasticity
D:-Modulus of elasticity
Correct Answer:- Option-A
Question22:-The term deformation per unit length is applied for
A:-Stress
B:-Strain
C:-Modulus of elasticity
D:-None of these
Correct Answer:- Option-B
Question23:-Modulus of elasticity is the ratio of
A:-Stress to original length
B:-Deformation to original length
C:-Stress to strain
D:-All of these
Correct Answer:- Option-C
Question24:-The ratio of lateral strain to the linear strain is called
A:-Modulus of elasticity
B:-Modulus of rigidity
C:-Bulk modulus
D:-Poissons ratio
Correct Answer:- Option-D
Question25:-The value of Poisson's ratio for steel varies णि
A:-0.20 t0 0.25
B:-0.25 to 0.35
C:-0.35 to 0.40
D:-0.40 to 0.50
Correct Answer:- Option-B

Question26:-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

A:-Principle of independence of forces
B:-Principle of resolution of forces
C:-Principle of transmi ity of forces
D:-None of these
Correct Answer:- Option-B

Question27:-The resultant of two forces P and Q acting at an angle 8 is
A:-'sqrt{P~(2)+Q~(2)+2PQsintheta)”
B:-"sqrt(P~(2}+Q"(2)+2PQcostheta)”
C:-"sqri(P~(24+Q™(2)-2PQcostheta)’
D:-*sqrt(P~(2)+Q " (2)-2PQtantheta)”
Correct Answer:- Option-B

Question28:-In order to determine two effects of forces acting on a body, we must know
A:-Its magnitude and direction of the line along which its acts
B:-Weather push or pull
C:-Point through which it acts on the body