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
B. Length of arc of contact to the circular pitch
(1/2) μ W R cosecα
(2/3) μ W R cosecα
(3/4) μ W R cosecα
μ W R cosecα
(ω₁ + ω₂)y
(ω₁/ω₂)y
(ω₁ × ω₂)y
(ω₁ + ω₂)/y
Equal to
Directly proportional to
Inversely proportional to
Independent of
μwr
¾μWR
(2/3) μWR
½μWR
Ball and socket i
Piston and cylinder
Cam and follower
Both (A) and (B) above
Rack and pinion
Worm and wheel
Spiral gears
None of the above
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
Zero
Less than one
Greater than one
Infinity
Displacement diagram
Velocity diagram
Acceleration diagram
All of the above
Belt and pulley
Turning pair
Screw pair
Sliding pair
Parallel to OA
Perpendicular to OA
At 45° to OA
Along AO
Less than unity
Equal to unity
Greater than unity
Zero
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
Slider crank mechanism
Four bar chain mechanism
Quick return motion mechanism
All of these
A single mass in different planes
Two masses in any two planes
A single mass in one of the planes of the revolving masses
Two equal masses in any two planes
Knife edge follower
Flat faced follower
Spherical faced follower
Roller follower
Equal to 1
Equal to 2
Less than 2
Greater than 2
Two links should be fixed
One link should be fixed
None of the links should be fixed
There is no such criterion
2
3
4
5
Is in phase
Leads by 90°
Leads by 180°
Lags by 90°
Cause withdrawing or throttling of steam
Reduce length of effective stroke of piston
Reduce maximum opening of port to steam
All of these
Lower pair
Higher pair
Turning pair
Sliding pair
Less
More
Equal
May be less or more depending on efficiency
The tip of a tooth of a mating gear digs into the portion between base and root circles
Gears do not move smoothly in the absence of lubrication
Pitch of the gears is not same
Gear teeth are undercut
Perpendicular to the acceleration force
Along the direction of acceleration force
Opposite to the direction of acceleration force
None of the above
2
4
3
None of the above
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
m₁r₂ = m₂r₁
m₁r₁ = m₂r₂
m₁m₂ = r₁r₂
None of these
Spur gearing
Helical gearing
Bevel gearing
Spiral gearing
Free vibration with damping
Free vibration without damping
Forced vibration with damping
Forced vibration without damping