4

One-half

Two-third

n times

1/n times

D. 1/n times

4

tp /16

tp /4

4 tp

16 tp

4

Straight line

Circle

Ellipse

Parabola

4

# The pair is known as a higher pair, when the relative motion between the elements of a pair is

Turning only

Sliding only

Rolling only

Partly turning and partly sliding

4

# The mechanism in which two are turning pairs and two are sliding pairs, is called a

Double slider crank chain

Elliptical trammel

Scotch yoke mechanism

All of these

4

# A foot step bearing and rotor of a vertical turbine form examples of

Incompletely constrained motion

Partially constrained motion

Completely constrained motion

Successfully constrained motion

4

# In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines,

The algebraic sum of the primary forces must be equal to zero

The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero

Both (A) and (B)

None of these

4

# Governor is used in automobile to

Decrease the variation of speed

Maximize the fuel economy

Limit the vehicle speed

Maintain constant engine speed

4

# Under logarithmic decrement, the amplitude of successive vibrations are

Constant

In arithmetic progression

In geometric progression

In logarithmic progression

4

Equal to 1

Less than 2

Equal to 2

Greater than 2

4

2

3

4

5

4

0

2

4

6

4

# The swaying couple is due to the

Primary unbalanced force

Secondary unbalanced force

Two cylinders of locomotive

Partial balancing

4

# Rectangular bar in a rectangular hole is the following type of pair

Completely constrained motion

Partially constrained motion

Incompletely constrained motion

Freely constrained motion

4

30° V-engine

60° V-engine

120° V-engine

150° V-engine

4

Open pair

Kinematic pair

Sliding pair

None of these

4

# When the two elements of a pair have __________ when in motion, it is said to a lower pair.

Line or point contact

Surface contact

Body contact

None of these

4

# Length of arc of contact is given by

Arc of approach - Arc of recess

Arc of approach + Arc of recess

Arc of approach / Arc of recess

Arc of approach × Arc of recess

4

2π. √(g/l)

(1/2π). √(g/l)

2π. √(l/g)

(1/2π). √(l/g)

4

# Higher pairs are those which have

Point or line contact between the two elements when in motion

Surface contact between the two elements when in motion

Elements of pairs not held together mechanically

Two elements that permit relative motion

4

Self-closed

Force-closed

Friction closed

None of these

4

Steering

Pitching

Rolling

All of the above

4

D/T

T/D

2D/T

2T/D

4

# The direction of Coriolis component of acceleration is the direction

Of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link

Along the centripetal acceleration

Along tangential acceleration

Along perpendicular to angular velocity

4

# In multi V-belt transmission, if one of the belt is broken, we have to change the

Broken belt

Broken belt and its adjacent belts

All the belts

There is no need of changing any one as remaining belts can take care of transmission of load

4

kG + l₁

kG² + l₁

(kG² + l₁²)/ l₁

(kG + l₁²)/ l₁

4

ω/2π

2π/ω

ω × 2π

π/ω

4

# A higher pair has__________.

Point contact

Surface contact

No contact

None of the above

4

1, 3

2, 2

3, 1

4, 0

4

Rotating

Oscillating

Reciprocating

All of the above