What is the correct answer?

4

# The height of a Watt's governor is

Directly proportional to speed

Directly proportional to (speed)²

Inversely proportional to speed

Inversely proportional to (speed)²

### Correct Answer :

D. Inversely proportional to (speed)²

### Related Questions

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4

# The dedendum circle diameter is equal to (where, φ = Pressure angle)

Pitch circle dia. × cosφ

Addendum circle dia. × cosφ

Clearance circle dia. × cosφ

Pitch circle dia. × sinφ

What is the correct answer?

4

# In vibration isolation system, the transmissibility will be equal to unity, for all values of damping factor, if ω/ωn is

Equal to 1

Equal to 2

Less than 2

Greater than 2

What is the correct answer?

4

# For an isochronous Hartnell governor (where r₁ and r₂ = Maximum and minimum radius of rotation of balls respectively, S₁ and S₂ = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve)

(m.g + S₁)/(m.g + S₂) = r₁/r₂

(m.g - S₁)/(m.g - S₂) = r₂/r₁

S₁/S₂ = r₁/r₂

S₂/S₁ = r₁/r₂

What is the correct answer?

4

# Critical damping is a function of

Mass and stiffness

Mass and damping coefficient

Mass and natural frequency

Damping coefficient and natural frequency

What is the correct answer?

4

# In S.H.M., acceleration is proportional to

Velocity

Displacement

Rate of change of velocity

All of the above

What is the correct answer?

4

# A universal joint is an example of

Higher pair

Lower pair

Rolling pair

Sliding pair

What is the correct answer?

4

# In under damped vibrating system, if x₁ and x₂ are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to

x₁/x₂

log(x₁/x₂)

loge(x₁/x₂)

log(x₁.x₂)

What is the correct answer?

4

# The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

m.ω².r sinθ

m.ω².r cosθ

m.ω².r (sin 2θ/n)

m.ω².r (cos 2θ/n)

What is the correct answer?

4

# Pitch point of a cam is

A point on the pitch curve having minimum pressure angle

A point on the pitch curve having maximum pressure angle

Any point on the pitch curve

Any point on the pitch circle

What is the correct answer?

4

# The number of links and instantaneous centers in a reciprocating engine mechanism are

4, 4

4, 5

5, 4

4, 6

What is the correct answer?

4

# Which of the following mechanism is obtained from lower pair?

Gyroscope

Pantograph

Valve and valve gears

All of the above

What is the correct answer?

4

# Power of a governor is the

Mean force exerted at the sleeve for a given percentage change of speed

Workdone at the sleeve for maximum equilibrium speed

Mean force exerted at the sleeve for maximum equilibrium speed

None of the above

What is the correct answer?

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

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

# In a coupling rod of a locomotive, each of the four pairs is a ________ pair.

Sliding

Turning

Rolling

Screw

What is the correct answer?

4

# Which of the following disciplines provides study of relative motion between the parts of a machine?

Theory of machines

Applied mechanics

Mechanisms

Kinematics

What is the correct answer?

4

# In a simple harmonic motion, the velocity vector with respect to displacement vector

Is in phase

Lags by 90°

What is the correct answer?

4

# A pulley and belt in a belt drive form a

Cylindrical pair

Turning pair

Rolling pair

Sliding pair

What is the correct answer?

4

# Angle of dwell of cam is defined as the angle

During which the follower returns to its initial position

Of rotation of the cam for 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

# If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the

0.5

1

1.5

2

What is the correct answer?

4

# If there are L number of links in a mechanism, then number of possible inversions is equal to

L + 1

L - 1

L

L + 2

What is the correct answer?

4

# Ackermann steering gear consists of

Sliding pairs

Turning pairs

Rolling pairs

Higher pairs

What is the correct answer?

4

# Which of the following is a higher pair?

Turning pair

Screw pair

Belt and pulley

None of the above

What is the correct answer?

4

# Which gear is used for connecting two coplanar and intersecting shafts?

Spur gear

Helical gear

Bevel gear

None of the above

What is the correct answer?

4

# Which of the following is a higher pair?

Belt and pulley

Turning pair

Screw pair

Sliding pair

What is the correct answer?

4

# The centre distance between two meshing involute gears is equal to

Sum of base circle radii/cosφ

Difference of base circle radii/ cosφ

Sum of pitch circle radii/ cosφ

Difference of pitch circle radii/ cosφ

What is the correct answer?

4

# The unbalanced force due to revolving masses

Varies in magnitude but constant in direction

Varies in direction but constant in magnitude

Varies in magnitude and direction both

Constant in magnitude and direction both

What is the correct answer?

4

# A point on a connecting link (excluding end points) of a double slider crank mechanism traces a

Straight line path

Hyperbolic path

Parabolic path

Elliptical path

What is the correct answer?

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

What is the correct answer?

4

2 mm

2.22 mm

2.50 mm

3.0 mm