Sliding pair
Rolling pair
Lower pair
Higher pair
D. Higher pair
0°
90°
180°
270°
The difference between the maximum and minimum energies is called maximum fluctuation of energy
The coefficient of fluctuation of speed is the ratio of maximum fluctuation of speed to the mean speed
The variations of energy above and below the mean resisting torque line is known as fluctuation of energy
None of the above
One
Two
Four
Six
sinα = b/c
cosα = c/b
tanα = c/2b
cotα = c/2b
Two links
Three links
Four or more than four links
All of these
The friction force is dependent on the materials of the contact surfaces.
The friction force is directly proportional to the normal force.
The friction force is independent of me area of contact.
All of the above
Bolt and nut
Lead screw of a lathe
Ball and socket joint
Ball bearing and roller bearing
Inertia
Momentum
Moment of momentum
Torque
Length of pair of contact to the circular pitch
Length of arc of contact to the circular pitch
Length of arc of approach to the circular pitch
Length of arc of recess to the circular pitch
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
Stable
Unstable
Isochronous
None of these
Belt and pulley
Turning pair
Screw pair
Sliding pair
(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)]
Of rotation of the cam for a 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
Moved by the cam from beginning of ascent to the termination of descent
Pendulum pump
Oscillating cylinder engine
Rotary internal combustion engine
All of these
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
Spur gear
Bevel gear
Spiral gear
None of the above
l - 2
l - 1
l
l + 1
Along the angular velocity
Opposite to angular velocity
May be any one of these
Perpendicular to angular velocity
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
Is same as that of velocity
Is opposite to that of velocity
Could be either same or opposite to velocity
Is perpendicular to that of velocity
0.4985/ √δS
0.5615/ √δS
0.571/ √δS
0.6253/ √δS
Surface of the top of tooth
Surface of tooth above the pitch surface
Width of tooth below the pitch surface
Width of tooth measured along the pitch circle
Slider crank mechanism
Four bar chain mechanism
Quick return motion mechanism
All of these
tan (α + φ)/tanα
tanα/tan (α +φ)
tan (α - φ)/tanα
tanα/tan (α - φ)
Simple gear train
Compound gear train
Reverted gear train
Epicyclic gear train
Worm and worm wheel
Spur gears
Bevel gears
Hooke's joint
P = W tan(α - φ)
P = W tan(α + φ)
P = W tan(φ - α)
P = W cos(α + φ)
(l₁ + l₂ + l₃)/3
l = l₁ + l₂.(d₁/d₂)³ + l₂.(d₁/d₃)³
l = l₁ + l₂.(d₁/d₂)⁴ + l₃.(d₁/d₃)⁴
l₁ + l₂ + l₃
Remain in the same place for all configurations of the mechanism
Vary with the configuration of the mechanism
Moves as the mechanism moves, but joints are of permanent nature
None of the above