Four bar linkage

6 bar linkage

8 bar linkage

3 bar linkage

A. Four bar linkage

2πk/r. √(g/l)

r/2πk. √(l/g)

2πr/k. √(g/l)

r/2πk. √(g/l)

10°

20°

30°

40°

2π. √(g/δ)

1/2π. √(g/δ)

2π. √(δ/g)

1/2π. √(δ/g)

Self-closed

Force-closed

Friction closed

None of these

(Length of the path of approach)/(Circular pitch)

(Length of path of recess)/(Circular pitch)

(Length of the arc of contact)/(Circular pitch)

(Length of the arc of approach)/cosφ

Less

More

Same

None of these

n = (l -1) - j

n = 2(l - 1) - 2j

n = 3(l - 1) - 2j

n = 4(l - 1) - 3j

Over damped

Under damped

Critically damped

Without vibrations

Radial component only

Tangential component only

Coriolis component only

Radial and tangential components both

Watt's mechanism

Grasshopper mechanism

Robert's mechanism

All of these

Base circle

Pitch circle

Prime circle

Outer circle

Pressure angle

Circular pitch

Diametral pitch

Pitch circle diameter

Mass and stiffness

Mass and damping coefficient

Mass and natural frequency

Damping coefficient and natural frequency

Perpendicular to its axis

Parallel to its axis

In a circle about its axis

None of these

Whitworth quick return mechanism

Elliptical trammels

Rotary engine

Universal joint

m₁r₂ = m₂r₁

m₁r₁ = m₂r₂

m₁m₂ = r₁r₂

None of these

Above

Below

At

None of these

All four pairs are turning

Three pairs turning and one pair sliding

Two pairs turning and two pairs sliding

One pair turning and three pairs sliding

Open pair

Closed pair

Sliding pair

Point contact pair

Sliding pairs

Turning pairs

Rolling pairs

Higher pairs

Thompson indicator

Richard indicator

Simplex indicator

Thomson indicator

_{G}/g)

_{G}/g)

_{G}/g)

_{G}/g)

n/2

n

n - 1

n(n - 1)/2

Sliding and turning pairs

Sliding and rotary pairs

Turning and rotary pairs

Sliding pairs only

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

[(r² + R²) cosφ]/2

[(r² + R²) sinφ]/2

[(r + R) cosφ]/2

[(r + R) sinφ]/2

Return to equilibrium position without oscillation

Oscillate with increasing time period

Oscillate with decreasing amplitude

Oscillate with constant amplitude

Dead weight governor

Pendulum type governor

Spring loaded governor

Inertia governor

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

Four

Five

Six

Seven