ESAS OBJECTIVE TYPE ORANGE BOOK

Kilogram

SI unit of mass

all of theses, INDEPENDENT OF THE AREA OF CONTACT BETWEEN TWO SURFACES IT ALWAYS ACTS IN A DIRECTION OOPOSITE TO THAT IN WHICH THE BODY TENDS TO MOVE ITS BEARS A CONSTANT RATIIO TO THE NORMAL REACTION BETWEEN TWO SURFACES IN CONTACT

Which one refers to static friction?

ALL OF THESE, MAGNITUDE, DIRECTION, POINT OF APPLICATION,

a force is completely defined by defining which of the following?

the ground is a rough surface and the wall is smooth surface

a heavy ladder resting on the floor and leaning against a vertical wall may not be in equilibrium for which of the following reasons?

to reduce the required energy

a pulley is used to move a load for all of the following reasons execpt?

two

a rigid body is subjected to three concurrent, coplanar forces. what is the minimum number of independent equations that are necessary to establish the equilibrium conditions?

it is the same at eery point in its line of action

according to the principle of transmissibility of forces, what is the effect of a force on a given body?

dummy unit load method

all of the following are acceptable methods for determining loads in a statically determinate truss except which one?

compressive and tensile forces holding the body together

all of the following are sources of the external forces on a rigid body EXCEPT ONE

between bodies having relative motion

columb friction is the friction between which of the following?

gravity

example of a force which acts at a distance without contact?

triangles

for a truss to be stable, all structural cells must be in what geometrcial shape?

angle of repose

how do you call the angle which an inclined plane makes the horizontal when a body place on it is about to move DOWN

collinear forces

how do you call the forces whose line of actions lie on the same line?

dynamic friction

how do you call the frictional forces encountered after the tart of motion?

non coplanar concurrent forces

how do you call the system of forces which meet at one point but their lines of action do not lie in the same vertical plane?

resultant

how do you call the vector that represents the sum of a group of force vectors?

only one reaction

how many reaction are there in a link or cable support?

only one reaction

how many reaction are there in a roller support?

the forces must be CONCURRENT

if THREE NON PARALLEL FORCES HOLD A RIGID BODY IN EQUILIBRIUM WHICH ONE IS TRUE?

180degrees

if the resultant between two coplanar forces is minimum, how much is the angle between them?

120 degree

if the resultant of two equal forces has the same magnitude as their of the forces, the what is the angle between the two forces?

ALL OF THESE, MAGNITUDE OF THE FORCE, LINE OF ACTION OF THE FORCE, NATURE OF THE FORCE

in order to determine the effects of a force acting on a body, which of the following must be known first?

it is the ratio of the load lifter to the effort applied.

mechanical advantage of lifting machine

acceleration

not a scalar quantity

center of rotation

one of the following is not an attribute that defines a force, which one?

coefficient of friction

refers to the tangent of the angle of friction

net force

resultant of all forces acting on a body is sometimes called which one?

newton

si unit of force

resolution of forces

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 statement refers?

at the midpoint of its axis

the center of gravitiy of a uniform lamina lies where?

type of surfaces in contact

the coefficient of friction is dependent on which of the following?

ALL OF THESE, MAGNITUDE OF THE FORCES, DIRECTION OF THE FORCE, LINE OF A CTION OF THE FORCE

the effect of a force on a body depends on which of the following item?

parallelogram law

two forces acting on an object may be replaced by a single force called resultant which is equal to the diagonal line of a parallelogram with the sides equal to the given two forces, this statement is called which one?

triangle law of forces

two forces acting simultaneously on a object can be represented by the two sides of a triangle taken in order so that the third side represents the resultant in the opposite orderd. what is this statement called?

forces whose line of action meet in one point

what are concurrent forces?

it is a couple

what is a free moment?

velocity

what is a quantity that has both magnitude and direction?

meter

what is the SI unit of length?

it will reduce the applied force

what is the advantage of applying lever to lift a load?

0 degree

what is the angle between two forces when the resultant is maximum?

unlimited

what is the maximum number of component that a single force can be resovlved into?

Wtantheta

what is the minimum force required to slide a body of weight W on a rough horizontal plane?

continuous beam

what is the name of a beam with more than one support?

free body diagram

what is the name of a diagram showing a sketch of a body completely isolated from all other bodies?

limitating friction

what is the name of the maximimum frictional force which come into play when a body just begins to slide over the surface of another body?

vector

what is the product of a vector and scalar?

it is always greater than one

what is the ratio of the static frictional force to the dynamic frictional force?

reaction in any direction with no moment

what is the reaction of a friction less hinge, pin connection or rough surface?

normal to the rail, with no moment

what is the reaction of a frictionless guide or collar?

equal to the area under the loading curve

what is the resultant force of a distributed load?

parabola

what is the shape of cable carrying uniform load per unit lenght with respect to the horizontal axis?

catenary

what is the shaped of cable carrying a constant uniform load per unit length along the lenght of the cable?

equilibrant force

what refers to a force that balances the effect of a given resultant force?

like parallel forces

what refers to a forces whose lines of action are parallel to each other and act in the same directions?

truss

what refers to a framework composed of members joined at their ends to form a rigid structure?

SCALAR

what refers to a quantity that has magnitude only with no direction

coplanar concurrent force

what refers to forces which meet at one point and their lines of action lie on the same plane?

moment

what type of loads is not resisted by a pinned joint?

both forces are equal, opposite and collinear

when can a two froce member be in a statis equilibrium?

anywhere on the rigid body

where can a couple be moved on a rigid body to have an equivalent effect?

in the intersection of its altitudes

where is the centroid of a given triangular area?

to determine the location of the centroid

which of following is an application of Varignons theorem?

a force but not a moment

which of the following can be support by a hinge?

It is a pai of forces, equal, opposite and parallel

which of the following defines couple?

the sum of the external forces acting on the system must be ZERO

which of the following is TRUE regarding a system which is in equilibrium?

energy

which of the following is a scalar quantity?

couple

which of the following is applied when trying to turn a key into a lock?

speed

which of the following is not a vector quantity?

van der Waal's forces

which of the following is not an external force?

dot product

which of the following is sometimes called a scalar product?

kilogram-meter per second squared

which of the following is the fundamental unit for a force of one newton?

forces that do not meet at one point but theirs lines of action lie on the same plane

which of the following refers to coplanaro non concurrent forces?

if three forces action at a point are in equilibrium, each force is proportional to the SINE OF THE ANGLE BETWEEN THE OTHER TWO

which of the following refers to lamis theorem?

if a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero

which of the following refers to the princeiple of moments?

the horizontal loads in cable segments will be unequal

which of the following statements about the analysis of ideal cables carrying concentrated load is not correct?

it is a two force body

which of the following statements is true about a truss member?

the line of action of the force passes the center of rotation

which one is a reason why the moment of an applied force on body is ZERO

the forces must be concurrent

which one is true regarding three nonparallel non zero forces acting on a rigid body and causing the body to be in equilibrium?

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

which one refers to angle of friction?

internal forces

which one refers to forces that hold a rigid body together?

the forces do not meet at one point and their lines of action do not lie on the same plane

which one refers to non coplanar, non concurrent forces?

moment arm

which one refers to the distance from a point around in which a body will rotate?

coefficient of friction

which one refers to the ratio of the limiting friction and the normal reaction?

statics

which one refers to the study of rigid bodies that are stationary?