Shoe brake
Band brake
Band and block brake
Internal expanding brake
A. Shoe brake
Free vibration with damping
Free vibration without damping
Forced vibration with damping
Forced vibration without damping
The primary unbalanced force is less than the secondary unbalanced force.
The primary unbalanced force is maximum twice in one revolution of the crank.
The unbalanced force due to reciprocating masses varies in magnitude and direction both.
The magnitude of swaying couple in locomotives is inversely proportional to the distance between the two cylinder centre lines
Acceleration and velocity of the piston P is zero
Acceleration and velocity of the piston P is maximum
Acceleration of the piston P is zero and its velocity is maximum
Acceleration of the piston P is maximum and its velocity is zero
Positive throughout
Negative throughout
Positive during major portion of the stroke
Negative during major portion of the stroke
Quick return mechanism of shaper
Four bar chain mechanism
Slider crank mechanism
Both (A) and (C) above
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
T = W.r tan(φ - α)
T = W.r tan(φ + α)
T = W.r tanα
T = W.r tanφ
Bulky
Wears rapidly
Difficult to manufacture
Both (A) and (B) above
0° and 90°
180° and 360°
Both (A) and (B)
None of these
2
3
4
5
T₁/T₂ = μ. θ. n
T₁/T₂ = [(1 - μ tanθ)/(1 + μ tanθ)]n
T₁/T₂ = (μ θ)n
T₁/T₂ = [(1 + μ tanθ)/(1 - μ tanθ)]n
Directly proportional to the distance from the points to the instantaneous centre and is parallel to the line joining the point to the instantaneous centre
Directly proportional to the distance from the points to the instantaneous centre and is perpendicular to the line joining the point to the instantaneous centre
Inversely proportional to the distance from the points to the instantaneous centre and is parallel to the line joining the point to the instantaneous centre
Inversely proportional to the distance from the points to the instantaneous centre and is perpendicular to the line joining the point to the instantaneous centre
Decreases linearly with time
Increases linearly with time
Decreases exponentially with time
Increases exponentially with time
Base circle
Pitch circle
Root circle
Prime circle
Less
More
Same
Data are insufficient to determine same
(r₁² - r₂²)/(r₁ - r₂)
(r₁² - r₂²)/(r₁ + r₂)
(r₁³ - r₂³)/(r₁² - r₂²)
(r₁³ - r₂³)/(r₁ - r₂)
Incompletely constrained motion
Partially constrained motion
Completely constrained motion
Successfully constrained motion
m.ω².r cosθ
c.m.ω².r sinθ
(1 - c).m.ω².r (cosθ - sinθ)
m.ω².r (cosθ - sinθ)
Structure
Mechanism
Kinematic chain
Inversion
± c.m.ω².r
± a (1 - c) m.ω².r
± (a/√2) (1 - c) m.ω².r
± 2a (1 - c) m.ω².r
Equal to 1
Less than 2
Equal to 2
Greater than 2
ω² × OQ
ω² × OQ sinθ
ω² × OQ cosθ
ω² × OQ tanθ
0.2
0.4
0.6
0.8
Incompletely constrained motion
Partially constrained motion
Completely constrained motion
Successfully constrained motion
None of the links is fixed
One of the links is fixed
Two of the links are fixed
None of these
60 to 80 r.p.m.
80 to 100 r.p.m.
100 to 200 r.p.m.
200 to 300 r.p.m.
A small value of pressure angle
A large value of pressure angle
There is no such relation with pressure angle
Something else
0.5
1
1.5
2
All points of the disc have the same velocity
The centre of the disc has zero acceleration
The centre of the disc has centrifugal acceleration
The point on the disc making contact with the plane surface has zero acceleration
Completely constrained motion
Partially constrained motion
Incompletely constrained motion
Freely constrained motion