A projectile is fired at an angle 9 to the vertical. Its horizontal range will be maximum when 9 is__________________?

Related Mcqs:

1. The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of __________________?

   A. friction
   B. limiting friction
   C. repose
   D. kinematic friction
   E. static friction

2. The effort required to lift a load W on a screw jack with helix angle a and angle of friction <j) is equal to__________________?

   A. Wtan(a + )
   B. Wtan(a-)
   C. Wcos(a + )
   D. Wsin(a + )
   E. W (sin a + cos ).

3. The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is________________?

   A. same
   B. double
   C. half
   D. four times
   E. one fourth

4. A cable with a uniformly distributed load per horizontal metre run will take the following shape_________________?

   A. straight line
   B. parabola
   C. hyperbola
   D. elliptical
   E. part of a circle

5. The algebraic sum of moments of the forces forming couple about any point in their plane is__________________?

   A. equal to the moment of the couple
   B. constant
   C. both of above are correct
   D. both of above are wrong
   E. none of the above

6. Longitudinal stress in a thin cylinder is__________________?

   A. equal to the hoop stress
   B. twice the hoop stress
   C. half of the hoop stress
   D. one-fourth of hoop stress
   E. four times the hoop stress

7. The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?

   A. same
   B. more
   C. less
   D. more or less depending on other factors
   E. unpredictable

8. The unit of Young’s modulus is__________________?

   A. mm/mm
   B. kg/cm
   C. kg
   D. kg/cm2
   E. kg cm2

9. Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one_______________?

   A. ellipse
   B. hyperbola
   C. parabola
   D. circle
   E. none of the above

10. Tensile strength of a material is obtained by dividing the maximum load during the test by the_________________?

    A. area at the time of fracture
    B. original cross-sectional area
    C. average of A. and B.
    D. minimum area after fracture
    E. none of the above.