A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to______________?

Related Mcqs:

1. A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly________________?

   A. 38 m
   B. 62.5 m
   C. 96 m
   D. 124 m
   E. 240 m

2. A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of__________________?

   A. r/2
   B. r/A
   C. r/%
   D. 0.134 r
   E. 3r/8

3. If two equal forces of magnitude P act at an angle 9°, their resultant will be________________?

   A. P/2 cos 9/2
   B. IP sin 9/2
   C. 2P tan 9/2
   D. IP cos 9/2
   E. Psin 9/2

4. The resolved part of the resultant of two forces inclined at an angle 9 in a given direction is equal to__________________?

   A. the algebraic sum of the resolved parts of the forces in the given direction
   B. the sum of the resolved parts of the forces in the given direction
   C. the difference of the forces multiplied by the cosine of 9
   D. the sum of the forces multiplied by the sine of 9
   E. the sum of the forces multiplied by the tangent of 9

5. A framed structure is perfect if it contains members equal to________________?

   A. 2n-3
   B. n-l
   C. ‘2n-l
   D. n – 2
   E. 3n-2

   where n = number of joints in a frame

6. A body of weight W on inclined plane of a being pulled up by a horizontal force P will be on the point of motion up the plane when P is equal to___________________?

   A. W
   B. W sin (a + $)
   C. Wtan(a + <|))
   D. Wan(a-)
   E. Wtana

7. 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

8. 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 )

9. Tangent of angle of friction is equal to_________________?

   A. kinetic friction
   B. limiting friction
   C. angle of repose
   D. coefficient of friction
   E. friction force

10. Two non-collinear parallel equal forces acting in opposite direction________________?

    A. balance each other
    B. constitute a moment
    C. constitute a couple
    D. constitute a moment of couple
    E. constitute a resultant couple