2001 Questions in

Machine Design


CORNELIO G. DUASO
Registered Mechanical Engineer
Kinematics

 Test 1
1. ME Board October 1999
It deals only with the motion of bodies
without reference to the forces that cause them.

A. Kinetics
B. Motion
C. Kinematics
D. Acceleration

ANSWER: C
2. ME Board October 1999
Progressive change in position of a body is
called:

A. Acceleration
B. Motion
C. Force
D. Momentum
ANSWER: B
3. ME Board April 1998
Cam in general maybe divided into two
classes; uniform motion and __________

A. Reverse
B. Gravity
C. Decelerated
D. Accelerated

ANSWER: D
4. ME Board October 1997
Product of mass and linear velocity is
known as:

A. Impulse
B. Linear Momentum
C. Angular Momentum
D. Impact

ANSWER: B
5. ME Board April 1997
It is a motion of an object
diminished/decreased speed.

A. Deceleration
B. Retarded motion
C. Negative Impulse
D. All of these
ANSWER: B
6. ME Board October 1996
It is a property of matter, which causes is
to resist any change in its motion or state of
rest. 
A. Brakes
B. Friction
C. Inertia
D. Impulse
ANSWER: C
7. ME Board October 1996
If the velocity of mass is the same all the
time during which motion takes place is called:

A. Deceleration
B. Uniform Motion
C. Acceleration
D. None of these

ANSWER: B
8. ME Board April 1996
Statement that a given body in static
equilibrium means that the body cannot

A. have any type of motion
B. be acted upon by more than one force
C. undergo any displacement
D. have any type of acceleration
ANSWER: A
9. ME Board April 1996

solved in 
It is the science of motion that can be
terms of scalar or vector algebra.

A. Kinematics
B. Curvilinear translation
C. Projectile
D. Acceleration
ANSWER: A
10. ME Board October 1995
An object thrown upward will return to
earth the magnitude of the terminal velocity
equal to 
A. zero
B. one-half the initial velocity
C. twice the initial velocity
D. initial velocity
ANSWER: D
11. ME Board October 1993
The follower reciprocates or oscillates in a
plane perpendicular to the axis of rotation
of the cam. 
A. Radial cam
B. Cylindrical cam
C. Cam curves
D. Tangential cam
ANSWER: A
12. ME Board October 1993
The follower reciprocates or oscillates in a
plane parallel to the axis of rotation.

A. Cam curves
B. Cylindrical cam
C. Tangential cam
D. Radial cam
ANSWER: B
13. ME Board April 1993
A cone formed by elements, which are
perpendicular to the elements of the pitch cone
at the large end. 
A. Cone distance
B. Back cone
C. Root cone
D. Cone center
ANSWER: B
14. ME Board April 1992
The ability of moving body to perform work
is called:

A. Internal energy
B. Potential energy
C. Kinetic energy
D. Flow work
ANSWER: C
15. A slider crank chain is made up of

A.
B. 
one turning and one sliding pair
one turning and two sliding pairs
C. two turning and one sliding pair
D. three turning and one sliding pair

ANSWER: D
16. A Scott-Russell mechanism is made up of

A. 
rotating pair only
B. sliding and turning pairs
C. turning and rotary pairs
D. turning pairs only

ANSWER: B
17. Ackerman steering gear is made up of

A. 
rolling and sliding pairs
B. rolling pairs
C. sliding and rotary pairs
D. turning pairs

ANSWER: D
18. A cam where the follower reciprocates or
oscillates in a plane to the axis of the cam is
called:

A. Circular cam
B. Cylindrical cam
C. Reciprocating cam
D. Tangential cam
ANSWER: B
19. Instantaneous center of rotation of a link in
a four bar mechanism lies on


A. a point obtained by intersection of
extending adjoinining links
B. left side pivot of this link
C. right side pivot of this link
D. any of the choices above
ANSWER: A
20. A vector quantity that describes both how
fast it is moving and the direction in which
it is heated.

A. Acceleration
B. Displacement
C. Motion
D. Velocity

ANSWER: D
21. Which of the following is the rate at which
the velocity is changing?

A. Acceleration 
B. Linear
C. Motion
D. Vertical

ANSWER: A
22. The direction of the _______ is toward the
center of the circle in which, the study
moves.

A. centripetal acceleration
B. centrifugal acceleration
C. radial cam
D. tangential

ANSWER: A
23. It is a device that change the magnitude,
direction or mode of application of a
torque or force while transmitting it for a
particular purpose. 
A. Frame
B. Machine
C. Mechanism
D. Structure
ANSWER: B
24. The process of obtaining the resultant of
any number of vectors.


A. Scalar quantity
B. Vector composition
C. Vector quantity
D. Vector resolution

ANSWER: B
25. It has magnitude, direction and sense.

A.
B. 
Scalar quantity
Absolute quantity
C. Vector quantity
D. Relative velocity

ANSWER: C
26. A plate, cylinder or other solid with a
surface of contact so designed as to cause or
modify the motion of the piece.

A. Cam
B. Disc
C. Gear
D. Pulley
ANSWER: A
27. When acceleration is zero, the


A. Velocity is constant
B. Velocity is negative
C. Velocity is variable
D. Velocity is zero

ANSWERS: A
28. When the velocity is changing, the
acceleration is


A. Constant
B. Not constant
C. Variable
D. Zero

ANSWER: A
29. Klein’s construction is used to determine
the


A. Acceleration is various parts
B. Angular acceleration of various parts
C. Displacement of various parts
D. Velocity of various parts

ANSWER: A
30. Klein’s construction can be used when


A. crank has a uniform angular
acceleration
B. crank has a uniform angular velocity
C. crank has a none uniform angular
velocity
D. B and C above

ANSWER: D
31. The cam angle is
A. The angle subtended by live portion of
cam at the cam’s center

B. The angle of rotation of the cam for a
definite displacement of the follower
C. The angle subtended at the cam’s
center by the portion of cam during which the
follower moves
D. The angle subtended by the cam at
the cam center when the follower dwells
ANSWER: B
32. The pitch point on a cam refers to


A. any point on pitch curve
B. a point at a distance equal to pitch
circle radius from the center
C. the point of cam pitch circle that has
the maximum pressure angle
D. none of the above
ANSWER: C
33. For a kinematics chain to be considered as
mechanism,


A. None of the links should be fixed
B. One link should be fixed
C. There is no such criterion
D. Two links should be fixed
ANSWER: B
34. Hart mechanism has how many links?

A. 4 
B. 6
C. 8
D. 12

ANSWER: B
35. Peaucellier mechanism has how many
links?


A. 4
B. 5
C. 6
D. 8
ANSWER: D
36. A cam with a roller follower would
constitute which type of pair?

A. Close pair 
B. Higher pair
C. Lower pair
D. Open pair

ANSWER: B
37. Kinematics pairs are those pairs that have


A. Elements of pairs not held together
mechanically
B. Point or line contact between the
elements when in motion
C. Surface contact between the two
elements when in motion
D. Elements that allow relative motion
ANSWER: D
38. A Pantograph is a mechanism having


A. Higher pairs
B. Lower pairs
C. Rolling pairs
D. Spherical pairs
ANSWER: B
39. The number of links in a pantograph is
equal to


A. 3
B. 4
C. 5
D. 6
ANSWER: B
40. In elliptical trammels,

A. 
All four pairs are turning
B. One pair turning and three pairs sliding
C. Three pairs turning and one pair sliding
D. Two pairs and two pairs sliding

ANSWER: D
41. The Klein’s method of construction for
reciprocating engine mechanism


A. Enables determination of Coriolis
Component
B. Is a simplified form of instantaneous
center method
C. Is based on acceleration diagram
D. Utilizes a quadrilateral similar to
diagram of mechanism for reciprocating engine
ANSWER: D
42. If a particle of a link has a velocity that
changes both in magnitude and direction at
any instant, then

A. It must have only unidirectional
acceleration
B. It must have two components of
acceleration e.g. centripetal and tangential
C. It must have three components of
acceleration e.g. centripetal, centrifugal and
tangential
D. It must have three components of
acceleration e.g. centripetal, centrifugal and
gravitational
ANSWER: B
43. Select the one that is the higher pair.


A. Crosby indicator mechanism
B. Hart’s straight line mechanism
C. Thomson indicator mechanism
D. Both gearing mechanism

ANSWER: D
44. A shaft revolving in a bearing forms a


A. cylindrical pair
B. higher pair
C. lower pair
D. sliding pair
ANSWER: C
45. The total number of instantaneous center
for a mechanism of N links is equal to


A. 2N
B. (N-1)(N+1)
C. 2N(N-1)
D. N(N-1)/2
ANSWER: D
46. A kinematics chain needs a minimum of


A. 2 links and 2 turning pairs
B. 3 links and 3 turning pairs
C. 3 links and 2 turning pairs
D. 4 links and 4 turning pairs
ANSWER: D
47. For kinematics chains formed by lower pair
the relation between the number of joint J is
given by

A. L =2/3(J+2)
B. L =3/2(J+2)
C. L =2/3(L+2)
D. J =3/2(L+2)
ANSWER: A
48. In case of an elliptical trammel,


A. One pair turns and two pairs slide
B. Two pairs turn and two pairs slide
C. Three pairs turn and one pairs slide
D. All four pairs turn
ANSWER: B
49. Coriolis component of acceleration is found
in


A. Four bar mechanism
B. Mechanism of steam engine
C. Higher pair
D. Whitworth-quick-return mechanism
ANSWER: D
50. It is one that is not appreciably deformed
by the action of any external force or load


A. Rigid body
B. Structure
C. Frame
D. Mechanism
ANSWER: A