Upward
Downward
Forward
Backward
B. Downward
Static friction
Dynamic friction
Limiting friction
Coefficient of friction
Resultant force is equal to zero
Resultant couple is equal to zero
Resultant force and resultant couple are both equal to zero
Resultant force is numerically equal to the resultant couple, but neither of them need necessarily be zero
Screw pair
Spherical pair
Turning pair
Sliding pair
Transmit motion
Guide other links
Act as a support
All 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
Bolt and nut
Lead screw of a lathe
Ball and socket joint
Ball bearing and roller bearing
50°-60°
60°-70°
70°-80°
80°-90°
Along the angular velocity
Opposite to angular velocity
May be any one of these
Perpendicular to angular velocity
Longitudinal vibrations
Transverse vibrations
Torsional vibrations
None of these
Simple gear train
Compound gear train
Reverted gear train
Epicyclic gear train
Varies in magnitude but constant in direction
Varies in direction but constant in magnitude
Varies in magnitude and direction both
Constant in magnitude and direction both
Varies in magnitude but constant in direction
Varies in direction but constant in magnitude
Varies in magnitude and direction both
Constant in magnitude and direction both
Sliding pair
Rolling pair
Lower pair
Higher pair
A triangle
A point
Two lines
A straight line
Rotating
Oscillating
Reciprocating
All of the above
Lower pair
Higher pair
Turning pair
Sliding pair
l₁ = kG
l₂ = kG
l₁l₂ = kG
l₁l₂ = kG²
Two forks
One fork
Three forks
Four forks
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
fn/2
2 fn
4 fn
8 fn
Inner dead centre
Outer dead centre
Right angles to the link of the stroke
All of the above
Shaft revolving in a bearing
Straight line motion mechanisms
Automobile steering gear
All of the above
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
P = W tan(α - φ)
P = W tan(α + φ)
P = W tan(φ - α)
P = W cos(α + φ)
m₁r₂ = m₂r₁
m₁r₁ = m₂r₂
m₁m₂ = r₁r₂
None of these
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
Parallel
Perpendicular
Both A and B
None of these
A small value of pressure angle
A large value of pressure angle
There is no such relation with pressure angle
Something else
Two links should be fixed
One link should be fixed
None of the links should be fixed
There is no such criterion
(1/2) μ W R
(2/3) μ W R
(3/4) μ W R
μ W R