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. For steel, the ultimate strength in shear as compared to in tension is nearly _________________?

   A. same
   B. half
   C. one-third
   D. two-third
   E. one-fourth

3. 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

4. The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to___________________?

   A. Young’s modulus
   B. bulk modulus
   C. modulus of rigidity
   D. modulus of elasticity
   E. Poisson’s ratio

5. Resilience of a material is considered when it is subjected to_________________?

   A. frequent heat treatment
   B. fatigue
   C. creep
   D. shock loading
   E. resonant condition

6. The safe twisting moment for a compound shaft is equal to the _________________?

   A. maximum calculated value
   B. minimum calculated value
   C. mean value
   D. extreme value
   E. none of the above

7. The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is_______________?

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

8. The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight________________?

   A. of same magnitude as that of bar and applied at the lower end
   B. half the weight of bar applied at lower end
   C. half of the square of weight of bar applied at lower end
   D. one-fourth of weight of bar applied at lower end
   E. none of the above

9. A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under_________________?

   A. uniform throughout
   B. increase uniformly
   C. first increase and then decrease
   D. increase uniformly first and then increase rapidly
   E. increase rapidly first and then uniformly

10. It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called______________________?

    A. internal resistanpe
    B. tensile stress
    C. transverse stress
    D. compressive stress
    E. working stress