A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to___________________?
A. 25
B. 50
C. 100
D. 250
E. 500
Engineering Mechanics
A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly_________________?
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
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___________________?
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
The C.G. of a solid hemisphere lies on the central radius 3r________________?
The C.G. of a solid hemisphere lies on the central radius 3r________________?
A. at distance — from the plane base 3r
B. at distance — from the plane base 3r
C. at distance — from the plane base 3r
D. at distance — from the plane base or
E. at distance — from the plane base
Which of the following is not the unit of energy_________________?
Which of the following is not the unit of energy_________________?
A. kg m
B. kcal
C. wattr
D. watt hours
E. kg m x (m/sec)2
A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal_________________?
A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal_________________?
A. density of metal can’t be determined
B. metal is twice as dense as water
C. metal will float in water
D. metal is twice as dense as unknown fluid
E. none of the above
The C.G. of a right circular solid cone of height h lies at the following distance from the base______________?
The C.G. of a right circular solid cone of height h lies at the following distance from the base______________?
A. h/2
B. J/3
C. h/6
D. h/4
E. 3/i/5
The C.G. of a plane lamina will not be at its geometrical centre in the case of a__________________?
The C.G. of a plane lamina will not be at its geometrical centre in the case of a__________________?
A. right angled triangle
B. equilateral triangle
C. square
D. circle
E. rectangle
The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is__________________?
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
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_______________?
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