18
20
30
34
A. 18
Tip of the gear tooth and flank of pinion
Tip of the pinion and flank of gear
Flanks of both gear and pinion
Tip of both gear and pinion
Less
More
Equal
May be less or more depending on efficiency
1/24
1/8
4/15
12
(r₁² - r₂²)/(r₁ - r₂)
(r₁² - r₂²)/(r₁ + r₂)
(r₁³ - r₂³)/(r₁² - r₂²)
(r₁³ - r₂³)/(r₁ - r₂)
0°
90°
180°
360°
Sliding
Turning
Rolling
Screw
Spur gearing
Helical gearing
Bevel gearing
Spiral gearing
A rigid link rotates instantaneously relative to another link at the instantaneous centre for the configuration of the mechanism considered.
The two rigid links have no linear velocity relative to each other at the instantaneous centre.
The velocity of the instantaneous centre relative to any third rigid link is same whether the instantaneous centre is regarded as a point on the first rigid link or on the second rigid link.
All of the above
Mean force exerted at the sleeve for a given percentage change of speed
Workdone at the sleeve for maximum equilibrium speed
Mean force exerted at the sleeve for maximum equilibrium speed
None of the above
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
Journal bearing
Ball and Socket joint
Leave screw and nut
None of the above
A straight line
A circle
Involute
Cycloidal
(1/2) μ W R
(2/3) μ W R
(3/4) μ W R
μ W R
Thompson indicator
Richard indicator
Simplex indicator
Thomson indicator
2
3
4
5
Cross head
Slider crank
Connecting rod
Gudgeon pin
Ball bearing
Roller bearing
Needle roller bearing
Thrust bearing
The centre of the disc
The point of contact
An infinite distance on the plane surface
The point on the circumference situated vertically opposite to the contact point
Longitudinal vibrations
Transverse vibrations
Torsional vibrations
None of these
1/2π × √(s/m)
1/2π × √(g/δ)
0.4985/√δ
Any one of these
ω √(x² - r²)
ω √(r² - x²)
ω² √(x² - r²)
ω² √(r² - x²)
Pitch circle
Base circle
Pitch curve
Prime circle
90° and 180°
45° and 225°
180° and 270°
270° and 360°
Structure
Mechanism
Kinematic chain
Inversion
The mass of two are same
C.G. of two coincides
M.I. of two about an axis through e.g. is equal
All of the above
Velocity of slider
Angular velocity of the link
Both (A) and (B)
None of these
ωR cosθ
ω(R - r₁) cosθ
ω(R - r₁) sinθ
ωr₁ sinθ
One-half
Two-third
Three-fourth
Whole
Tension in the tight side of the belt
Tension in the slack side of the belt
Sum of the tensions on the tight side and slack side of the belt
Average tension of the tight side and slack side of the belt
Two links
Three links
Four or more than four links
All of these