What is the correct answer?

4

# Sensitiveness of the governor is defined as the ratio of the

Mean speed to the maximum equilibrium speed

Mean speed to the minimum equilibrium speed

Difference of the maximum and minimum equilibrium speeds to the mean speed

Sum of the maximum and minimum equilibrium speeds to the mean speed

### Correct Answer :

C. Difference of the maximum and minimum equilibrium speeds to the mean speed

### Related Questions

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4

# The equation of motion for a single degree of freedom system with viscous damping is 4(dx²/dt²) + 9(dx/dt) + 16x. The damping ratio of the system is

9/8

9/82

9/16

9/128

What is the correct answer?

4

# The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is

(1/2) μ W R cosec α

(2/3) μ W R cosec α

(3/4) μ W R cosec α

μ W R cosec α

What is the correct answer?

4

# In considering friction of a V-thread, the virtual coefficient of friction (μ₁) is given by

μ₁ = μ sinβ

μ₁ = μ cosβ

μ₁ = μ/sinβ

μ₁ = μ/cosβ

What is the correct answer?

4

# Sense of tangential acceleration of a link

Is same as that of velocity

Is opposite to that of velocity

Could be either same or opposite to velocity

Is perpendicular to that of velocity

What is the correct answer?

4

# One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)

2π. √(g/δ)

1/2π. √(g/δ)

2π. √(δ/g)

1/2π. √(δ/g)

What is the correct answer?

4

# The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

Static friction

Dynamic friction

Limiting friction

Coefficient of friction

What is the correct answer?

4

# The height of a Watt's governor (in metres) is equal to (where N = Speed of the arm and ball about the spindle axis)

8.95/N²

89.5/N²

895/N²

8950/N²

What is the correct answer?

4

# A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

fn/2

2 fn

4 fn

8 fn

What is the correct answer?

4

# The component of the acceleration, perpendicular to the velocity of the particle, at the given instant is called

Radial component

Tangential component

Coriolis component

None of these

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4

# Angle of descent of cam 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

What is the correct answer?

4

# The example of rolling pair is

Bolt and nut

Lead screw of a lathe

Ball and socket joint

Ball bearing and roller bearing

What is the correct answer?

4

# The inversion of a mechanism is

Changing of a higher pair to a lower pair

Turning its upside down

Obtained by fixing different links in a kinematic chain

Obtained by reversing the input and output motion

What is the correct answer?

4

# In a Hartnell governor, the lift of the sleeve is given by (where r₁ and r₂ = Max. and min. radii of rotation, x = Length of ball arm of the lever, and y = Length of sleeve arm of the lever)

(r₁ + r₂) (y/x)

(r₁ + r₂) (x/y)

(r₁ - r₂) (y/x)

(r₁ - r₂) (x/y)

What is the correct answer?

4

# In a single slider crank chain

Each of the four pairs is a turning pair

One is a turning pair and three are sliding pairs

Two are turning pairs and two are sliding pairs

Three are turning pairs and one is a sliding pair

What is the correct answer?

4

# Which of the following statement is correct for involute gears?

The interference is inherently absent.

The variation in centre distance of shafts increases radial force.

A convex flank is always in contact with concave flank.

The pressure angle is constant throughout the teeth engagement.

What is the correct answer?

4

# The frequency of oscillation at compared to earth will be

6 times more

6 times less

2.44 times more

2.44 times less

What is the correct answer?

4

# Module of a gear is

D/T

T/D

2D/T

2T/D

What is the correct answer?

4

# When the nature of contact between the elements of a pair is such that it can only slide relative to the other, the pair is known as a

Screw pair

Spherical pair

Turning pair

Sliding pair

What is the correct answer?

4

# In its simplest form, a cam mechanism consists of following number of links

1

2

3

4

What is the correct answer?

4

# In a radial cam, the follower moves

In a direction perpendicular to the cam axis

In a direction parallel to the cam axis

In any direction irrespective of the cam axis

Along the cam axis

What is the correct answer?

4

# The sense of coriolis component 2 ωv is same as that of the relative velocity vector v rotated at

45° in the direction of rotation of the link containing the path

45° in the direction opposite to the rotation of the link containing the path

90° in the direction of rotation of the link containing the path

180° in the direction opposite to the rotation of the link containing the path

What is the correct answer?

4

# The flank of the tooth is the surface of the tooth __________ the pitch surface.

Above

Below

At

None of these

What is the correct answer?

4

# In a gear having involute teeth, the normal to the involute is a tangent to the

Pitch circle

Base circle

Addendum circle

Dedendum circle

What is the correct answer?

4

# 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

What is the correct answer?

4

# Which of the following statement is wrong?

The difference between the maximum and minimum energies is called maximum fluctuation of energy

The coefficient of fluctuation of speed is the ratio of maximum fluctuation of speed to the mean speed

The variations of energy above and below the mean resisting torque line is known as fluctuation of energy

None of the above

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4

# The acceleration of the particle moving with simple harmonic motion is _________ at the mean position.

Zero

Minimum

Maximum

None of these

What is the correct answer?

4

# The displacement of the D-slide valve is __________ the steam lap by a distance known as lead of the valve.

Greater than

Less than

Equal to

None of these

What is the correct answer?

4

# The partial balancing of reciprocating parts in locomotives produces

Hammer blow

Swaying couple

Variation in tractive force along the line of stroke

All of the above

What is the correct answer?

4

# When two pulleys are connected by means of a cross belt drive, then both the pulleys will rotate in __________ directions.

Same

Opposite

Perpendicular

None of these

What is the correct answer?

4

v

(2/3). v

(3/2). v

(9/4). v