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Aerospace & Aeronautical Engineering MCQ

What is the radius of the base circle?

12.5mm

50mm

25mm

Answer

Correct Answer: 50mm

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What are mechanisms that move along a straight line without being guided by a plane surface?

Sliding mechanisms

Spiral motion mechanisms

Curved line motion mechanisms

Straight line motion mechanisms

Answer

Correct Answer: Straight line motion mechanisms

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What is the time direction of the cutting stroke?

Anti-clockwise

Random

Clockwise

Neither

Answer

Correct Answer: Anti-clockwise

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What is the input link of the four bar mechanism?

Link 3

Link 4

Link 2

Answer

Correct Answer: Link 2

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When do you use a quick return mechanism?

When you are finished with the work item

When you need to make a quick adjustment

When you need to return part of the work item for another job

Machine tools such as shapers and power driven saw

Answer

Correct Answer: Machine tools such as shapers and power driven saw

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Which type of machine tool uses quick return mechanisms?

Shapers and power driven saws

Machinists and precision turning machines

Manual Machines

CNC machines

Answer

Correct Answer: Shapers and power driven saws

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What is used to connect two parallel shafts whose axes are offset by a small amount?

Adjustable coupling

Snap ring

Insulation

Inversion of double slider crank mechanism

Answer

Correct Answer: Inversion of double slider crank mechanism

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What type of kinematic chain is a single slider crank?

Triple slider crank

Quadruple slider crank

Double slider crank

Answer

Correct Answer: Double slider crank

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What type of chains have two turning pairs and two sliding pairs?

Disc wheel chain

Hub gear chain

Double slider crank chain

Single slider crank chain

Answer

Correct Answer: Double slider crank chain

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What are the links of the slider crank in an inversion?

2, 3 and 4

2 and 4

1, 2 and 5

1 and 5

Answer

Correct Answer: 2, 3 and 4

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What is the name of the chain with the four links?

Worm gear chain

Sprocket chain

V-belt

Slider crank chain

Answer

Correct Answer: Slider crank chain

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What has got combined rotary and reciprocating motion?

Helicopter

Pulley

Wrench

Link 3

Answer

Correct Answer: Link 3

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What is the purpose of link 4?

Fixed

Broadcast

To help users find content

To provide connectivity

Answer

Correct Answer: Fixed

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What is the name of the crankshaft type that uses two equal cranks on each side of the axle?

Double crank mechanism

Quadricycle

Quadruple crank mechanism

Single crank mechanism

Answer

Correct Answer: Double crank mechanism

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What type of drag link mechanism has links 1&3 are equal and parallel and links 2&4 are equal and parallel?

Worm gear

Screw mechanism

Delta mechanism

Crank mechanism

Answer

Correct Answer: Crank mechanism

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Hat direction does link 1 make rotation?

Along the x-axis

Both directions

In the same direction

With different velocities

Answer

Correct Answer: With different velocities

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What is the name of the mechanism that allows links to rotate but with different velocities?

Rotating link mechanism

Drag link mechanism

Hot link mechanism

Swivelling link mechanism

Answer

Correct Answer: Drag link mechanism

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What is the name of the oscillating link in a crank-rocker mechanism?

Link 5

Link 1

Link 4

Link 2

Answer

Correct Answer: Link 4

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Which of the links rotates completely in the crank-rocker mechanism?

Link 2

Link 1

Link 3

Answer

Correct Answer: Link 2

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Which one is fixed in a crank-rocker mechanism?

Link 1

Link 2

Link 3

Answer

Correct Answer: Link 1

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A chain with one link fixed is called an what?

Spring

Mechanism

Slinky

Fence

Answer

Correct Answer: Mechanism

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What is a mechanism?

A machine that can produce a variety of items by manipulating parts

A system in which energy is transferred through a medium

A system of interconnected parts

One in which one of the links of a kinematic chain is fixed

Answer

Correct Answer: One in which one of the links of a kinematic chain is fixed

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What is the term for the number of inputs required to describe the configuration or position of all the links of a mechanism?

Number of links in a mechanism

Number of links/mechanism

Torque

Degrees of freedom/mobility of a mechanism

Answer

Correct Answer: Degrees of freedom/mobility of a mechanism

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When all the links of a mechanism have plane motion, it is called what?

A mechanism with linear motion

A mechanism with no links

A mechanism with curved links

A mechanism with circular motion

As a planar mechanism

Answer

Correct Answer: As a planar mechanism

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What is a planar mechanism?

When all the links of a mechanism have plane motion

A way to make money

When the links are rotational

A machine that prints pictures

When the links have linear motion

Answer

Correct Answer: When all the links of a mechanism have plane motion

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In addition to being a mechanism, a machine also transmits what?

Force

Energy

Messages

Information

Answer

Correct Answer: Force

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What are examples of instruments that are not machines?

Mechanical clock, drafter

Musical instrument

Harpsichord

Violin, cello

Answer

Correct Answer: Mechanical clock, drafter

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What are constrained kinematic chains called?

Machine

Mechanism

Gearbox

Answer

Correct Answer: Mechanism

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What is the definition of a constrained kinematic chain?

A system

A mechanism

A set of linked parts

A machine

Answer

Correct Answer: A mechanism

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A kinematic chain is a group of what?

Links

Gears

Screws

Chains

Answer

Correct Answer: Links

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What does incompletely constrained motion mean?

That the constraints are not necessary

No relative motion

Relative motion between the object and the observer

That the motion is uncontrolled

Relative motion between pairing elements

Answer

Correct Answer: Relative motion between pairing elements

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What kind of motion is incompletely constrained?

Angular

Absolute

Linear

Relative

Answer

Correct Answer: Relative

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What's the term for relative motion between two elements that are in more than one direction?

Motion with constant velocity

Motion with alternating velocities

Relative translational motion

Completely constrained motion

Incompletely constrained motion

Answer

Correct Answer: Incompletely constrained motion

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What is the term for motion that is not achieved by the pairing elements themselves?

Rigid motion

Free motion

Inelastic motion

Successfully constrained motion

Controlling motion

Answer

Correct Answer: Successfully constrained motion

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What type of motion is successfully constrained?

Imbalanced motion

Change in motion

Constrained motion

Free motion

Unconstrained motion

Answer

Correct Answer: Constrained motion

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How is completely constrained motion achieved?

By imposing an external force

By the use of dampers

By the pairing elements themselves

By using a visco-fluid damper

By the use of springs

Answer

Correct Answer: By the pairing elements themselves

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What does it mean for the constrained motion to be achieved by the pairing elements themselves?

Semi-constrained motion

Limited motion

No constraint at all

Completely constrained motion

Answer

Correct Answer: Completely constrained motion

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What does constrained motion mean?

In a kinematic pair, if one element has got only one definite motion relative to the other

The ability to change the position of an object without affecting its velocity

It means that two or more points in space have the same position and orientation

The ability to move an object in a certain direction and at a certain speed

It means that there is a definite relationship between the displacement vectors of two or more objects

Answer

Correct Answer: In a kinematic pair, if one element has got only one definite motion relative to the other

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What is the motion of the element that is the object of the pair called?

No motion

Free fall

Inertial motion

Free motion

Constrained motion

Answer

Correct Answer: Constrained motion

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What are examples of force closed pairs in a machine?

Crank and pulley

Screw and nut

Disk and arm

Cam and follower

Tappet and valve

Answer

Correct Answer: Cam and follower

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What are elements of pairs held together due to their geometry called?

Intersecting pair

Open pair

Closed pair

Closed triangle

Answer

Correct Answer: Closed pair

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What are closed pairs called?

Domain-closed or range-closed pair

Form-closed or self-closed pair

Set-closed or subsets-closed pair

Function-closed or inverse-closed pair

Answer

Correct Answer: Form-closed or self-closed pair

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Closed pair are also called what?

Open pair

Self-closed pair

Closed circle

Unrelated pairs

Answer

Correct Answer: Self-closed pair

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What does the length of screw pair refer to?

Diameter

Pitch length

DOF

Pitch

Size

Answer

Correct Answer: DOF

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What type of pair is a nut and a bolt?

Nut and bolt

Nail pair

Spring pair

Screw pair

Wrench pair

Answer

Correct Answer: Screw pair

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How many degrees of freedom does a spherical pair have?

Three

Eight

One

Five

Two

Answer

Correct Answer: Three

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What is the total number of degrees of freedom for a rolling pair?

Answer

Correct Answer: 1

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What is the motion between the pairing elements if it is a cylindrical pair?

Twisting

Rotating

Turning and sliding

Rolling

Gliding

Answer

Correct Answer: Turning and sliding

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What is the term for a single element that has two connections?

Turning pair

Y-junction

Bridge

Branch

Switch

Answer

Correct Answer: Turning pair

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How many elements make up a Siding Pair?

Six

Three

Two

Four

Answer

Correct Answer: Two

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What is the type of contact that occurs when the contact points are along a line?

Mid-pair

Low pair

Mid point

Higher pair

Answer

Correct Answer: Higher pair

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What is the name of the pair of members connected by the joint that has surface contact?

Upper pair

Right pair

Lower pair

Opposite pair

Answer

Correct Answer: Lower pair

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What does it mean for a body to be in space?

Free

Floating

In orbit

On the moon

Answer

Correct Answer: Free

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What is the number of independent coordinates required to describe the position of a body in space?

Cartesian coordinates

Degrees of freedom

Polar coordinates

Answer

Correct Answer: Degrees of freedom

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What are two members of a mechanism joined together so that the relative motion between the two is consistent?

Linkages

Parts of a machine

Bearings

Sliding elements

Pairing elements

Answer

Correct Answer: Pairing elements

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What does the Quaternary link consist of?

A triangle

Four points

A square

A line

A parallelogram

Answer

Correct Answer: Four points

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What has four connections?

Octet

Binary system

Quaternary link

Ternary link

Binary link

Answer

Correct Answer: Quaternary link

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Ternary links use three of what?

Points

Filaments

Wires

Electricity

Potentials

Answer

Correct Answer: Points

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What kind of link is a ternary link?

Link which references a document on the web

Link which is connected to other links at three points

Link which connects two pages

Link which connects one page and a search engine

Link which contains text

Answer

Correct Answer: Link which is connected to other links at three points

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Which type of link has three points of contact?

Ternary link

Quadruple link

Tetrahedral link

Binary link

Octahedral link

Answer

Correct Answer: Ternary link

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What is a binary link connected to?

A router

A hub

What is a link that is connected to other links at two points?

Loop link

Binary link

Nonexistent link

File

Hyperlink

Answer

Correct Answer: Binary link

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What is the name given to any body that has motion relative to another?

Tube

Cord

Satellite

Orbit

Link

Answer

Correct Answer: Link

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What is exhibited by machine parts?

Translation and rotation

Assembly

Function

Movement

Energy storage and release

Answer

Correct Answer: Translation and rotation

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What two parts of movement are demonstrated by machine parts?

Position and translation

Translation and rotation

Rotation and position

Rotation and translation

Answer

Correct Answer: Translation and rotation

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What is the line that points in a body remain at fixed distances from?

A curve

An angle

A line

A point

Answer

Correct Answer: A line

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What type of translation is a slider in a slider crank?

Octagonal

Rectilinear

Concentric

Linear

Curvilinear

Answer

Correct Answer: Rectilinear

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What is the term for a motion that all points of the body move in straight line paths?

Rotational translation

Angular translation

Angular velocity

Linear velocity

Rectilinear translation

Answer

Correct Answer: Rectilinear translation

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A body has plane motion, if all its points move in planes which are what?

Parallel to some reference plane

Perpendicular to some reference plane

At right angles to some reference plane

In a circle around a center

Answer

Correct Answer: Parallel to some reference plane

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What type of study is dynamics?

Chemistry in motion

Mechanics of materials

Forces acting on the objects in the machine

Forces acting on the machine parts

Forces acting on the machine

Answer

Correct Answer: Forces acting on the machine parts

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What is the name of the field that studies forces acting on machine parts?

Mechanical engineering

Dynamics of machines

Mechanics of materials

Automotive engineering

Mechanics

Answer

Correct Answer: Dynamics of machines

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The study of machines is called what?

Kinematics

Robotics

Mechanics

Engineering

Answer

Correct Answer: Kinematics

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What type of science is mechanics?

Mechanical engineering

Mathematics

Physics

Scientific

Engineering

Answer

Correct Answer: Scientific

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What is the field of science that studies movement, time, and force?

Astronomy

Mechanics

Biology

Physics

Answer

Correct Answer: Mechanics

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What sort of motion is periodic that can be described by position functions?

Circular motion

Simple harmonic motion

Oscillatory motion

Answer

Correct Answer: Simple harmonic motion

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What can be described by a position function?

Periodic motion

Direction of motion

Position of an object in space

Change in momentum

Acceleration

Answer

Correct Answer: Periodic motion

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The value of a function at each point represents the rate of what with respect to time?

Change in magnitude

Duration

Change

Change in direction

Motion

Answer

Correct Answer: Change

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What does the acceleration function give for an object?

The magnitude of the acceleration

The value of the acceleration

The direction of the acceleration

Answer

Correct Answer: The value of the acceleration

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What is the second time-derivative of the position function?

Second derivative of velocity

Divergence of the velocity field

Second derivative of position

Acceleration function

Answer

Correct Answer: Acceleration function

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What does the Velocity function give us?

The velocity of an object

The velocity of a sound

How fast an object is moving

The direction of an object's motion

The velocity of light

Answer

Correct Answer: The velocity of an object

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What is the time derivative of the position function?

Acceleration function

Differential operator

Velocity function

Derivative of position function

Position function

Answer

Correct Answer: Velocity function

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What is a position function called when motion occurs in one dimension?

Vector-valued

Wave

Scalar-valued

Position

Answer

Correct Answer: Scalar-valued

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A function that outputs vectors is called what?

Matrix-valued function

Scalar-valued function

Vector-valued function

Vector magnitude function

Answer

Correct Answer: Vector-valued function

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What are scalars?

Vectors

Real numbers

Matrices

Complex numbers

Regular numbers

Answer

Correct Answer: Regular numbers

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Most common functions are what?

Vector-valued functions

Matrix-valued functions

Scalar-valued functions

Answer

Correct Answer: Scalar-valued functions

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What does the gravitational acceleration of objects near the earth's surface depend on?

The mass of the object

Diameter of object

Mass

Distance from the earth

Answer

Correct Answer: Mass

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What is the gravitational acceleration of objects near Earth's surface?

9.8m/s2

11.3m/s2

10.7m/s2

Answer

Correct Answer: 9.8m/s2

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What does the term instantaneous velocity mean?

The velocity of an object at any given moment

The value of the velocity function at a particular instant in time

The magnitude of the velocity vector at a particular instant in time

The distance travelled by the object in one second

A change in velocity over a short period of time

Answer

Correct Answer: The value of the velocity function at a particular instant in time

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What is the time interval over which the average velocity is calculated?

Seconds

None specified

Unspecified

A single instant

Specified

Answer

Correct Answer: Specified

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What does the term "speed" describe?

How fast an object is moving

How fast a signal travels

How quickly something happens

How quickly a person can think

How fast the computer can communicate

Answer

Correct Answer: How fast an object is moving

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What is an example of a measure of how fast an object is moving?

Time

Distance

Speed

Answer

Correct Answer: Speed

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What is the frame used to describe motion?

Graph

Kinetic energy

Velocity vector

Timeline

Coordinate system

Answer

Correct Answer: Coordinate system

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The coordinate system with respect to which motion is being described is known as what?

Frame

Cartesian coordinate system

Cartesian

Polar coordinate system

Metric

Answer

Correct Answer: Frame

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What type of motion is studied by dynamics?

Object

Energy

Force

Answer

Correct Answer: Object

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What does dynamics study?

How bodies interact with each other

The way things interact with each other

The principles that govern how particles move

How to make things move

Why objects move the way they do

Answer

Correct Answer: Why objects move the way they do

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A man ran a distance of how many meters?

400

1,600

800

1000

Answer

Correct Answer: 400

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What did the man

-2000 kg

-1000 kg

Answer

Correct Answer: 0

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An objects total change in position is called what?

Displacement

Angular momentum

Acceleration

Velocity

Answer

Correct Answer: Displacement

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What is Kinematics concerned with describing?

The motion of a group of particles

The motion of a particle

The forces that affect object's movement

The laws that govern object's motion

The way in which objects move

Answer

Correct Answer: The way in which objects move

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What area of physics deals with the movement of objects?

Kinematics

Thermodynamics

Optics

Mechanics

Answer

Correct Answer: Kinematics

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