26. If three rigid rods are hinged together to form a triangle and are given rotary as well as translatory motion, the number of instantaneous centres of the triangle, will be
27. The mechanical advantage of an ideal machine is 100. For moving the local through 2 m, the effort moves through
28. When a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as
29. To attain the synchronous orbit, the launch of a satellite, is done from a place
30. The vertical reaction at the support A of the structure shown in below figure, is
31. If the radius of the earth is 600 km the height of a mountain above sea level at the top of which a beat seconds pendulum at sea level, looses 27 seconds a day, is
32. The total time of collision and restitution of two bodies, is called
33. The length of a Second's pendulum, is
34. A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is
35. A key that will erase information from the computer’s memory and characters on the screen?
36. A string of length 90 cm is fastened to two points A and B at the same level 60 cm apart. A ring weighing 120 g is slided on the string. A horizontal force P is applied to the ring such that it is in equilibrium vertically below B. The value of P is :
37. The reaction at the support A of the beam shown in below figure is
38. India Wins Freedom was authored by:?
39. UN General Assembly elects a President and how many Vice President at the Start of its each regular Session?
40. Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is
41. The C.G. of a right circular cone lies on its axis of symmetry at a height of
42. A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60° with horizontal, is
43. If a particle is projected inside a horizontal tunnel which is 554 cm high with a velocity of 60 m per sec, the angle of projection for maximum range, is
44. The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth's surface
45. An instrument which does the functions of human brain is?
46. Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation
47. Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of
48. A projectile is fired with a velocity of 100.3 m/sec. at an elevation of 60°. The velocity attained by the projectile when it is moving at a height of 100 m, is
49. A body is said to move with Simple Harmonic Motion if its acceleration, is
50. One end of a light string 4 m in length is fixed to a point on a smooth wall and the other end fastened to a point on the surface of a smooth sphere of diameter 2.25 m and of weight 100 kg. The reaction between the sphere and the wall of the arrangement made is