μwr
¾μWR
(2/3) μWR
½μWR
D. ½μWR
Have a surface contact when in motion
Have a line or point contact when in motion
Are kept in contact by the action of external forces, when in motion
Are not held together mechanically
Four times the first one
Same as the first one
One fourth of the first one
One and a half times the first one
Toothed gearing
Belt and rope drive
Ball and roller bearing
All of these
Motion of a piston in the cylinder of a steam engine
Motion of a square bar in a square hole
Motion of a shaft with collars at each end in a circular hole
All of the above
Slider crank mechanism
Four bar chain mechanism
Quick return motion mechanism
All of these
Turning pair
Rolling pair
Screw pair
Spherical pair
Permanent instantaneous centres
Fixed instantaneous centres
Neither fixed nor permanent instantaneous centres
None of the above
P = W tan α
P = W tan (α + φ)
P = W (sin α + μ cos α)
P = W (cos α + μ sin α)
ω/2π
2π/ω
ω × 2π
π/ω
(1/2). μ W cosecα (r₁ + r₂)
(2/3). μ W cosecα (r₁ + r₂)
(1/2). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)]
(2/3). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)]
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
I.ω.(ω₁ - ω₂)
I.ω².CS
2.E.CS
All of these
Diameter of disc
Span of shaft
Eccentricity
All of these
One binary joint
Two binary joints
Three binary joints
Four binary joints
One-half
Two-third
Three-fourth
Whole
Increases power transmitted
Decreases power transmitted
Have no effect on power transmitted
Increases power transmitted upto a certain speed and then decreases
Pressure angle
Circular pitch
Diametral pitch
Pitch circle diameter
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
Rack and pinion
Worm and wheel
Spiral gears
None of the above
Between I₁, and I₂ but nearer I₁
Between I₁, and I₂ but nearer to I₂
Exactly in the middle of the shaft
Nearer to I₁ but outside
Radial component
Tangential component
Coriolis component
None of these
Flat pivot bearing
Flat collar bearing
Conical pivot bearing
Truncated conical pivot bearing
2πk/r. √(g/l)
r/2πk. √(l/g)
2πr/k. √(g/l)
r/2πk. √(g/l)
l = 2p - 2
l = 2p - 3
l = 2p - 4
l = 2p - 5
Whitworth quick return mechanism
Hand pump
Oscillating cylinder engine
All of the above
Yes
No
Unpredictable
None of these
ω². (r₁ r₂). (1 - cos² θ)
ω². (r₁ + r₂). (1 + cos² θ)
ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ]
ω². (r₁ - r₂). (1 - sin² θ)
To move the ship towards starboard
To move the ship towards port side
To raise the bow and lower the stern
To raise the stern and lower the bow
No acceleration
Only linear acceleration
Only angular acceleration
Both linear and angular acceleration
T = W.r tan(φ - α)
T = W.r tan(φ + α)
T = W.r tanα
T = W.r tanφ