Universal joint
Knuckle joint
Oldham's coupling
Flexible coupling
C. Oldham's coupling
Whitworth quick return mechanism
Elliptical trammels
Rotary engine
Universal joint
Minimum
Maximum
Zero
Infinity
Weak material of the belt
Weak material of the pulley
Uneven extensions and contractions of the belt when it passes from tight side to slack side
Expansion of the belt
30° V-engine
60° V-engine
120° V-engine
150° V-engine
The net dynamic force acting on the shaft is equal to zero
The net couple due to the dynamic forces acting on the shaft is equal to zero
Both (A) and (B)
None of the above
Inner edge
Outer edge
Corners
None of these
Mean speed to the maximum equilibrium speed
Mean speed to the minimum equilibrium speed
Difference of the maximum and minimum equilibrium speeds to the mean speed
Sum of the maximum and minimum equilibrium speeds to the mean speed
Belt, rope and chain drives
Gears, cams
Ball and roller bearings
All of the above
Not exist
Exist
Depend on position of crank
None of the above
Compound gears
Worm and wheel method
Hooke's joint
Crown gear
0°
90°
180°
270°
Radial component only
Tangential component only
Coriolis component only
Radial and tangential components both
Wear is less
Power absorbed is less
Both wear and power absorbed are low
The pressure developed being high provides tight sealing
Directly proportional to the distance from the points to the instantaneous centre and is parallel to the line joining the point to the instantaneous centre
Directly proportional to the distance from the points to the instantaneous centre and is perpendicular to the line joining the point to the instantaneous centre
Inversely proportional to the distance from the points to the instantaneous centre and is parallel to the line joining the point to the instantaneous centre
Inversely proportional to the distance from the points to the instantaneous centre and is perpendicular to the line joining the point to the instantaneous centre
1
2
3
4
n₁ + n₂
n₁ + n₂ + 1
n₁ + n₂ - 1
n₁ + n₂ - 2
Turning pairs
Sliding pairs
Spherical pairs
Self-closed pairs
h/(kG² + h²)
(kG² + h²)/h
h²/(kG² + h²)
(kG² + h²)/h²
Deep groove ball bearing
Double row self aligning ball bearing
Double row spherical roller bearing
Cylindrical roller bearing
Perpendicular to sliding surfaces
Along sliding surfaces
Somewhere in between above two
None of the above
ω (r₁ r₂) sinθ
ω (r₁ + r₂) sinθ sec2θ
ω (r₁ r₂) cosθ
ω (r₁ + r₂) cosθ cosec2θ
Free vibration
Forced vibration
Damped vibration
Under damped vibration
a is +ve and b = 0
a = 0 and b is +ve
a is +ve and b is -ve
a is +ve and b is also +ve
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
For constant velocity ratio transmission between two gears, the common normal at the point of contact must always pass through a fixed point on the line joining the centres of rotation of gears.
For involute gears, the pressure angle changes with the change in centre distance between gears.
The epicyclic gear trains involve rotation of atleast one gear axis about some other gear axis.
All of the above
Pendulum type governor
Dead weight governor
Spring loaded governor
Inertia governor
Along PO
Perpendicular to PO
At 45° to PO
None of the above
Return to equilibrium position without oscillation
Oscillate with increasing time period
Oscillate with decreasing amplitude
Oscillate with constant amplitude
Watt governor
Porter governor
Hartnell governor
None of these
Remains constant
Decreases
Increases
None of these