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. | The component of a force (P) at right angles to its direction will be |

A. | Zero [Correct Answer] |

B. | Half [Wrong Answer] |

C. | Same [Wrong Answer] |

D. | 1.414P [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss it below :Rahul Patil Said on 2018-05-09 07:58:46Cos90=0 !! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ The unit of power generally adopted is

Kg-m/sec

Joule

Newton-m/sec

Horse power

⇒ The distance from the axis of reference where the whole mass or area of a body is assumed to be concentrated is known

Lever arm

Moment of inertia

Centre of gravity

Radius of gyration

⇒ The S.I. unit of kinetic energy is

Newton

Erg

Joule

Kg-m/sec.

⇒ At the instantaneous centre, the velocity of the moving lamina at any instant is

zero

maximum

minimum

varying

⇒ One Newton is equivalent to

1 kg-wt

9.81 kg-wt

981 dyne

1/9.81 kg-wt

⇒ A stone is thrown up a slope of inclination 60° to the horizontal. At what angle to the slope must the stone be thrown so as to land as far as possible from the point of projection ?

15°

30°

45°

75°

⇒ A cube on a smooth horizontal surface

cannot be in stable equilibrium

cannot be in neutral equilibrium

cannot be in unstable equilibrium

can be in any of these states

⇒ Minimum potential energy of a system will be in the position of

stable equilibrium

unstable equilibrium

neutral equilibrium

all of the above

⇒ One horse power in metric system is equal to

75 kg-metre/second

75 kg-m/hour

4500 kg-m/second

4500 kg-m/hour

⇒ The condition of equilibrium for any system of forces in a plane is

The resultant couple must be zero

The polygon of forces must close

Both (A) and (B)

None of these

⇒ A shell travelling with a horizontal velocity of 100 m/sec explodes and splits into two parts, one of mass 10 kg and the other of 15 kg. The 15 kg mass drops vertically downward with initial velocity of 100 m/sec and the 10 kg mass begins to travel at an angle to the horizontal of tan"1 x, where x is

3/4

4/5

5/3

3/5

⇒ In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is

30

50

60

80

⇒ The number of funicular polygons which can be drawn to pass through two specified points in the space diagram are

zero

1

2

infinity

⇒ The main advantage of using worm gears is-

Ease of manufacture

High velocity ratio

Low power loss

Minimum cost

⇒ If D and d are the diameter of wheel and axle respectively of a Weston's differential pulley block then the velocity ratio of the block will be

D/d

2D/d

D/D-d

2D/D-d

⇒ It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f. If the maximum velocity during the oscillation is V, then V must be proportional to

f

1/f

1/f2

f2

⇒ The member forces in a statically in determinate truss

can be obtained by graphic statics

cannot be obtained by graphic statics

may be obtained by graphic statics

can be obtained by graphic statics by trial and error

⇒ The ratio of kinetic energy and potential energy of a simple harmonic oscillator, at a displacement equal to half its amplitude is given by

1:2

1:1

2:1

3:1

⇒ When a spring is loaded, the strain produced is

Longitudinal

Volumetric

Shearing

None of these

⇒ A heavy ladder resting on floor and against a vertical wall may not be in equilibrium if

floor is smooth and wall is rough

floor is rough and wall is rough

both floor and wall are rough

both floor and wall are smooth

⇒ Select the correct statement

The body centrode rolls on the space centrode.

The space centrode rolls on the body centrode.

Both body and space centrodes may role on each other.

The body centrode never touches space centrode.

⇒ A system of copianar forces is in equilibrium when

force polygon closes

funicular polygon closes

both force polygon" and funicular polygon close

all the forces are concurrent

⇒ A particle of mass 2 kg executes simple harmonic motion of frequency 6/71 Hz and amplitude 0.25 m. Its maximum kinetic energy is

4.5 J

9.0 J

12.0 J

18.0 J

⇒ Which of the following represents the state of neutral equilibrium ?

a cube resting on one edge

a smooth cylinder lying on a curved surface

a smooth cylinder lying on a convex surface

none of the above

⇒ The angle of projection at which the horizontal range and maximum height of a projectile are equal to

45°

tan-1 (2)

tan-' (4)

tan"1 (1/4)

⇒ The expression [ML

^{2}T

^{-2}] represents

Power

Kinetic energy

Momentum

Pressure

⇒ The total kinetic energy of a hoop of mass 2 kg and radius 4 m sliding with linear velocity 8 m/sec and angular velocity 5 radian/sec is

64 J

400 J

464 J

89 J

⇒ A ladder is resting on a smooth ground and leaning against a rough vertical wall, the force of friction acts

Towards the wall at its upper end

Downwards at its upper end

Upward at its upper end

Away from the wall at its upper end

⇒ The locus of all instantaneous centres is called as

Moment of inertia

Centrode

Centre of gravity

Centre of pressure

⇒ If a set of given forces are such that their free vectors build a closed polygon, then

the resultant force and resultant couple are always zero

the resultant force is zero but resultant couple is not zero

the resultant force is zero but resultant couple may not be zero

the resultant force and resultant couple both may not be zero