Hartnell governor
Hartung governor
Wilson-Hartnell governor
All of these
D. All of these
Dead weight governor
Pendulum type governor
Spring loaded governor
Inertia governor
Radius of rotation of balls increases as the equilibrium speed decreases
Radius of rotation of balls decreases as the equilibrium speed decreases
Radius of rotation of balls increases as the equilibrium speed increases
Radius of rotation of balls decreases as the equilibrium speed increases
θ/2
θ
2θ
4θ
2π. √(q/I)
2π qI
(1/2π). √(q/I)
1/2π
Line or point contact
Surface contact
Body contact
None of these
l = 2p - 2
l = 2p - 3
l = 2p - 4
l = 2p - 5
Primary unbalanced force
Secondary unbalanced force
Two cylinders of locomotive
Partial balancing
Equal to
Less than
Greater than
None of these
ω (r₁ r₂) sinθ
ω (r₁ + r₂) sinθ sec2θ
ω (r₁ r₂) cosθ
ω (r₁ + r₂) cosθ cosec2θ
Lower pairs
Higher pairs
Rolling pairs
Turning pairs
Quick return mechanism of shaper
Four bar chain mechanism
Slider crank mechanism
Both (A) and (C) above
Is a simplified version of instantaneous centre method
Utilises a quadrilateral similar to the diagram of mechanism for reciprocating engine
Enables determination of coriolis component
Is based on the acceleration diagram
15
28
30
8
l - 2
l - 1
l
l + 1
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
Completely constrained motion
Incompletely constrained motion
Successfully constrained motion
None of these
Turning pair
Rolling pair
Sliding pair
Spherical pair
90° and 180°
45° and 225°
180° and 270°
270° and 360°
cosθ = sinα
sinθ = ± tanα
tanθ = ± cosα
cotθ = cosα
A very thin film of lubricant between the journal and the bearing such that there is contact between the journal and the bearing
A thick film of lubricant between the journal and the bearing
No lubricant between the journal and the bearing
A forced lubricant between the journal and the bearing
Over damped
Under damped
Critically damped
Without vibrations
Turning pairs
Sliding pairs
Spherical pairs
Self-closed pairs
Fc = ar + b
Fc = ar - b
Fc = ar
Fc = a/r + b
Zero
Less than one
Greater than one
Infinity
Grasshopper mechanism
Watt mechanism
Peaucellier's mechanism
Tchebicheff mechanism
Upward
Downward
Forward
Backward
Hartnell governor
Hartung governor
Wilson-Hartnell governor
All of these
The system is critically damped
There is no critical speed in the system
The system is also statically balanced
There will absolutely no wear of bearings
4, 4
4, 5
5, 4
4, 6
12
14
18
24