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WorksheetsTECHNICAL QUIZ
Total questions: 40
Worksheet time: 20mins
According to Lami's theorem
Three forces acting at a point will be in equilibrium
Three forces acting at a point can be represented by a triangle, each side being proportional to force
If three forces acting upon a particle are represented in magnitude and direction by the sides of a
triangle, taken in order, they will be in equilibrium
If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle
between the other two
The center of gravity of a triangle lies at the point of
Concurrence of the medians
Intersection of its altitudes
Intersection of bisector of angles
Intersection of diagonals
In a parallelogram of forces, the resultant is represented by
The diagonal of the parallelogram
The sum of the two forces
The difference of the two forces
The average of the two forces
Which of the following statements is true regarding the centroid of a triangle?
It is always located outside the triangle
It divides each median into a ratio of 2:1
It is the point where the altitudes intersect
It is the same as the orthocenter of the triangle
What is the relationship between the centroid and the area of a triangle?
The centroid is the point that minimizes the area of the triangle
The centroid divides the triangle into two regions of equal area
The centroid is the point where the area of the triangle is maximized
The centroid has no relation to the area of the triangle
In the context of forces, what does the term 'resultant' refer to?
The sum of all forces acting on an object
The force that opposes motion
The average of all forces acting on an object
The force that causes an object to accelerate
In the context of machining, cutting force refers to
The force exerted by the tool on the workpiece
The force required to move the tool
The force exerted by the workpiece on the tool
The force required to maintain tool temperature
Which of the following materials is most commonly used in the manufacturing of gears?
Copper
Aluminum
Steel
Plastic
In the context of thermodynamics, what does the term "enthalpy" refer to?
The heat content of a system
The work done by a system
The internal energy of a system
The entropy of a system
Which principle is used to calculate the force exerted by a fluid in hydraulic systems?
Bernoulli's Principle
Pascal's Principle
Archimedes' Principle
Newton's Law of Cooling
In the context of material science, what does the term "ductility" refer to?
The ability of a material to withstand deformation
The ability of a material to be drawn into wires
The ability of a material to resist fracture
The ability of a material to conduct electricity
What is the term for the ratio of the output torque to the input torque in a mechanical system?
Torque Ratio
Mechanical Advantage
Gear Ratio
Power Ratio
In a piston-cylinder arrangement, what term is used to describe the distance the piston travels in one complete stroke?
Stroke Length
Bore Diameter
Displacement Volume
Clearance Volume
When the two elements of a pair have _____________ when in motion, it is said to a lower pair.
line or point contact
surface contact
permit relative motion
none of the mentioned
The forces, whose lines of action are parallel to each other and act in the same directions, are known as ?
coplanar concurrent forces
coplanar non-concurrent forces
like parallel forces
unlike parallel forces
One joule means that ?
work is done by a force of 1 N when it displaces a body through 1 m
work is done by a force of 1 kg when it displaces a body through 1 m
work is done by a force of 1 dyne when it displaces a body through 1 cm
work is done by a force of 1 g when it displaces a body through 1 cm
The angle of inclination of the plane at which the body begins to move down the plane, is called ?
angle of friction
angle of repose
angle of projection
none of these
The wheels of a moving car possess ?
potential energy only
kinetic energy of translation only
kinetic energy of rotation only
kinetic energy of translation and rotation both
The centre of gravity of the volume of the liquid displaced is called ?
centre of pressure
centre of buoyancy
metacentre
none of these
A notch is used to measure ............. of liquids ?
pressure
discharge
velocity
volume
The condition that causes vapor locking in a brake system is
overheating of the fluid due to frequent brake application
overcooling of the brakes during high speed driving
keeping the vehicle without use for an extended period
an excessively high engine speed on a downhill road
Which of the following indicates a multigrade oil ?
SAE 30
API SF
SAE 20 W-50
API 50
What is the term for the maximum angle at which a body can remain at rest on an inclined plane without sliding?
angle of friction
angle of repose
angle of inclination
none of these
Which type of energy is associated with the motion of an object?
potential energy
kinetic energy
thermal energy
chemical energy
In the context of fluid mechanics, what does the term "viscosity" refer to?
The resistance of a fluid to flow
The density of a fluid
The pressure exerted by a fluid
The temperature of a fluid
What is the term for the force that opposes the relative motion of solid surfaces, fluid layers, and material elements sliding against each other?
Friction
Inertia
Momentum
Viscosity
In a mechanical system, what is the term used to describe the energy stored due to an object's position or configuration?
Kinetic Energy
Potential Energy
Thermal Energy
Mechanical Energy
Which of the following best describes the principle of conservation of energy?
Energy can be created and destroyed
Energy can only be transformed from one form to another
Energy is always lost in any transformation
Energy is constant and cannot change form
A screw jack used for lifting the loads is ?
a reversible machine
a non-reversible machine
an ideal machine
none of these
The force, by which the body is attracted, towards the centre of the earth, is called ?
impulsive force
mass
weight
momentum
Which of the following best describes the term 'moment of inertia'?
The resistance of an object to changes in its rotational motion
The force required to rotate an object
The torque applied to an object
The energy stored in a rotating object
Carnot cycle has maximum efficiency for ?
petrol engine
diesel engine
reversible engine
irreversible engine
One molecule of oxygen consists of ...... atoms of oxygen ?
2
4
8
16
The self ignition temperature of Diesel as compared to petrol is ?
higher
lower
same
depends on fuel quality
An oil filter bypass valve opens when the ?
engine is cold
engine overheats
oil filter becomes clogged
engine runs at high speed
The ignition coil is used to ?
step up current
step down current
step up voltage
step down voltage
The function of a governor in automobiles is to ?
limit the power
limit the vehicle speed
maintain constant engine speed
maximize the fuel economy
Two advantages of using helical gears rather than spur gears in a transmission system are ?
strength and cost
strength and less end thrust
noise level and strength
noise level and economy
In mechanics, what is the term for the rate of change of velocity of an object?
Acceleration
Velocity
Momentum
Force
Which of the following is a measure of the average kinetic energy of the particles in a substance?
Temperature
Pressure
Volume
Density
