4

Halved

Doubled

None of these

4

# The partial balancing means

Balancing partially revolving masses

Balancing partially reciprocating masses

Best balancing of engines

All of these

4

Sliding pair

Rolling pair

Lower pair

Higher pair

4

# Bifilar suspension method is used to find the

Angular acceleration of the body

Moment of inertia of the body

Periodic time of the body

Frequency of vibration of the body

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

# For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that

Governor A is more sensitive than governor B

Governor B is more sensitive than governor A

Both governors A and B are equally sensitive

None of the above

4

# The steering of a ship means

Movement of a complete ship up and down in vertical plane about transverse axis

Turning of a complete ship in a curve towards right or left, while it moves forward

Rolling of a complete ship sideways

None of the above

4

# Creep in belt drive is due to

Material of the pulley

Material of the belt

Larger size of the driver pulley

Uneven extensions and contractions due to varying tension

4

# The Klein's method of construction for reciprocating engine mechanism

Is based on acceleration diagram

Is a simplified form of instantaneous center method

Utilises a quadrilateral similar to the diagram of mechanism for reciprocating engine

Enables determination of Carioles component

4

Same

Opposite

Perpendicular

None of these

4

# Which of the following governor is used to drive a gramophone?

Watt governor

Porter governor

Pickering governor

Hartnell governor

4

# Angular acceleration of a link can be determined by dividing the

Centripetal component of acceleration with length of link

Tangential component of acceleration with length of link

Resultant acceleration with length of link

All of the above

4

50°-60°

60°-70°

70°-80°

80°-90°

4

Steering

Pitching

Rolling

All of the above

4

Pitch circle

Base circle

Pitch curve

Prime circle

4

# When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

[(r² + R²) cosφ]/2

[(r² + R²) sinφ]/2

[(r + R) cosφ]/2

[(r + R) sinφ]/2

4

90°

180°

360°

4

# Which one of the following is an exact straight line mechanism using lower pairs?

Watts mechanism

Grasshopper mechanism

Roberts mechanism

Peaucelliers mechanism

4

12

16

25

32

4

l₁ = kG

l₂ = kG

l₁l₂ = kG

l₁l₂ = kG²

4

Cylindrical pair

Turning pair

Rolling pair

Sliding pair

4

1

2

3

4

4

# The Klein's diagram is useful to find

Displacement of various parts

Velocity of various parts

Acceleration of various parts

Angular acceleration of various parts

4

# Klein's construction can be used to determine acceleration of various parts when the crank is at

Right angles to the link of the stroke

All of the above

4

# The pitching of a ship produces forces on the bearings which act __________ to the motion of the ship.

Vertically and parallel

Vertically and perpendicular

Horizontally and parallel

Horizontally and perpendicular

4

x₁/x₂

log(x₁/x₂)

loge(x₁/x₂)

log(x₁.x₂)

4

# Cam angle is defined as the angle

During which the follower returns to its initial position

Of rotation of the cam for a definite displacement of the follower

Through which, the cam rotates during the period in which the follower remains in the highest position

Moved by the cam from the instant the follower begins to rise, till it reaches its highest position

4

# The lower pair is a

Open pair

Closed pair

Sliding pair

Point contact pair

4

# Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of a cross belt drive. The length of the belt is

π (r₁ + r₂) + [(r₁ + r₂)²/x] + 2x

π (r₁ + r₂) + [(r₁ - r₂)²/x] + 2x

π (r₁ - r₂) + [(r₁ - r₂)²/x] + 2x

π (r₁ - r₂) + [(r₁ + r₂)²/x] + 2x

4

# In a four stroke I.C. engine, the turning moment during the compression stroke is

Positive throughout

Negative throughout

Positive during major portion of the stroke

Negative during major portion of the stroke