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Directions to Solve

Some scholars were exploring the forest of Middle America. They discovered some buildings which were in ruins. These buildings were ...(1)... ruined by the encroaching forest. It was also clear that these buildings were no ordinary structures. They were remnants of a ...(2)... civilisation. The scholars got interested. They excavated more and discovered ...(3)... their utmost surprise the remains of flourishing civilization-the Maya's ...(4)... they named it. Thus it was as late in ...(5)... 19th that the secrets of new civilization were ...(6)... For sometime the scholars believed that the Mayan's must have ...(7)... the descendants of ancient Egyptians or one of the lost tribes of Israel; or perhaps a brand of the South East Asia's immigrants. However they could not come to an unanimous decision. Nonetheless the fact remains that even-to day the Mayan is one of ...(8)... most ancient cicilizations. This civilisation was situated in the ...(9)... of Middle America. It covered an area equivalent to France, ...(10)... spread across Guatemala, Belize and some part of Mexico Honduras. It started in 2500 B.C and continued its progress till 34 ...(11)... later. Throughout its period of progress, the people struggled against the invading ...(12)... They used to burn the plants and make the land ...(13)... for civilization. Their staple food was maize. but even while ...(14)... for existence, they found time to build remarkable buildings for ...(15)... they used mortar, sandstone and volcanic rock. The buildings do tell us about the technological advances they had attained.

Q1: (solve as per the direction given above)

A tail

B head

C heart

Q2: Concurrent forces are those forces whose lines of action

A lie on the same line

B none of these

C meet at one point

D meet on the same plane

Q3: Tension in the cable supporting a lift is more when the lift is moving __________ with an acceleration.

A upwards

B downwards

Q4: According to the law of moments, if a number of coplaner forces acting on a particle are in equilibrium, then

A their algebraic sum is zero

B the algebraic sum of their moments about any point in their plane is zero

C their lines of action are at equal distances

D the algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.

Q5: If u1 and u2 are the velocities of two moving bodies in the same direction before impact and v1 and v2 are their velocities after impact, then coefficient of restitution is given by

A

B

C

D

Q6: Two bodies of masses m1,and m2 are hung from the ends of a rope, passing oyer a frictionless pulley as shown in the figure below. The acceleration of the string will be

A

B

C

D

Q7: The centre of gravity of a trapezium with parallel sides a and b lies at a distance of y from the base b, as shown in the below figure. The value of y is

A

B

C

D

Q8: A machine having an efficiency less than 50%, is known as

A non-reversible machine

B ideal machine

C neither reversible nor non-reversible machine

D reversible machine

Q9: The total momentum of a system of masses (i. e. moving bodies) in any one direction remains constant, unless acted upon by an external force in that direction. This statement is called

A principle of conservation of energy

B Newton's first law of motion

C Newton's second law of motion

D principle of conservation of momentum

Q10: The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

A

B

C

D