Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | 108. 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 [Wrong Answer] |

B. | 50 [Correct Answer] |

C. | 100 [Wrong Answer] |

D. | 250 [Wrong Answer] |

E. | 500. [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ The weight of a body is due to

centripetal force of earth

gravitational pull exerted by the earth

forces experienced by body in atmos-phere

gravitational force of attraction towards the centre of the earth

⇒ 113. The C.G. of a solid hemisphere lies on the central radius 3r

at distance — from the plane base 3r

at distance — from the plane base 3r

at distance — from the plane base 3r

at distance — from the plane base or

⇒ 48. The units of moment of inertia of an area are

kg m2

m4

kg/m2

m3

⇒ 23. Which of the following is not a scalar quantity

time

mass

volume

density

⇒ 21. The forces, which meet at one point, but their lines of action do not lie in a plane, are called

coplanar non-concurrent forces

non-coplanar concurrent forces

non-coplanar non-concurrent forces

intersecting forces

⇒ 136. A cable with a uniformly distributed load per horizontal metre run will take the following shape

straight line

parabola

hyperbola

elliptical

⇒ If two equal forces of magnitude P act at an angle 9°, their resultant will be

P/2 cos(9/2)

P sin(9/2)

2P tan(9/2)

P cos(9/2)

⇒ The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of

balance of force

independence of forces

dependence of forces

resolution of forces

⇒ 5. Forces are called coplanar when all of them acting on body lie in

one point

one plane

different planes

perpendicular planes

⇒ 110. 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

ellipse

hyperbola

parabola

circle

⇒ 105. If three forces acting in different planes can be represented by a triangle, these will be in

non-equilibrium

partial equilibrium

full equilibrium

unpredictable

⇒ 47. Centre of gravity of a thin hollow cone lies on the axis at a height of

one-fourth of the total height above base

one-third of the total height above base

one-half of the total height above base

three-eighth of the total height above the base

⇒ 106. If n = number of members andy = number of joints, then for a perfect frame, n =

j-2

2j-l

2/-3

3/-2

⇒ When trying to turn a key into a lock, following is applied

coplanar force

non-coplanar forces

moment

couple

⇒ The units of moment of inertia of mass are

kg.m^2

kg/m^2

m2/kg

kg/m

⇒ 112. 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

density of metal can't be determined

metal is twice as dense as water

metal will float in water

metal is twice as dense as unknown fluid

⇒ 101. The maximum frictional force which comes into play when a body just begins to slide over another surface is called

limiting friction

sliding friction

rolling friction

kinematic friction

⇒ 127. A pair of smith's tongs is an example of the lever of

zeioth order

first order

second order

third order

⇒ Forces are called coplanar when all of them acting on body lie in

one point

one plane

different planes

perpendicular planes

⇒ 77. Coefficient of friction is the

angle between normal reaction and the resultant of normal reaction and the limiting friction

ratio of limiting friction and normal reaction

the friction force acting when the body is just about to move

the friction force acting when the body is in motion

⇒ 46. Centre of percussion is

the point of C.G.

the point of metacentre

the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis

point of suspension

⇒ Which of the following is not a vector quantity

Mass

velocity

acceleration

force

⇒ 108. A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

25

50

100

250

⇒ 9. Two coplanar couples having equal and op-posite moments

balance each other

produce a couple and an unbalanced force

are equivalent

produce a moment of couple

⇒ 26. The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60° produce resultant of Vl3 kg. These forces are

2 and V6

3 and 1 kg

V5andV5

2 and 5

⇒ 1. The unit of force in S.I. units is

kilogram

newton

watt

dyne

⇒ 59. The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be

r/2

2r/3

r/A

3r/2

⇒ 52. The possible loading in various members of framed structures are

compression or tension

buckling or shear

shear or tension

all of the above

⇒ 88. Limiting force of friction is the

tangent of angle between normal-reac-tion and the resultant of normal reac-tion and limiting friction

ratio of limiting friction and normal reaction

the friction force acting when the body is just about to move

the friction force acting when the body is in motion

⇒ 28. Two non-collinear parallel equal forces acting in opposite direction

balance each other

constitute a moment

constitute a couple

constitute a moment of couple