Shafts are arranged parallel and rotate in the opposite directions
Shafts are arranged parallel and rotate in the same directions
Shafts are arranged at right angles and rotate in one definite direction
Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft
D. Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft
Same in both cases
2 times more
3 times more
4 times more
(Kf + 1)/ (Kt + 1)
(Kf - 1)/ (Kt - 1)
(Kt + 1)/ (Kf + 1)
(Kt - 1)/ (Kf - 1)
One-fourth
One-third
One-half
Double
Pulley is made the weakest
Key is made the weakest
Key is made the strongest
All the three are designed for equal strength
Dynamic loading
Static loading
Combined static and dynamic loading
Completely reversed loading
0.5 times
Equal to
2 times
Double
On both the sides
On one side only
On none of the sides
May be provided anywhere
Reduce vibration
Reduce slip
Ensure uniform loading
Ensure proper alignment
Provide cushioning effect
Provide bearing area
Absorb shocks and vibrations
Provide smooth surface in place of rough surface
Load is in between the fulcrum and effort
Effort is in between the fulcrum and load
Fulcrum is in between the load and effort
None of these
To produce torque
For speed reduction
To obtain variable speeds
To increase efficiency of system
Rectangular
Elliptical
I-section
Any one of these
Nil or lightest
Maximum
Average
Any one of the above
0.5 to 1
1 to 2
3 to 5
5 to 10
Increasing its shank diameter
Increasing its length
Decreasing its shank diameter
Decreasing its length
The pitch circle diameter is equal to the product of module and number of teeth
The addendum is less than dedendum
The pitch circle is always greater than the base circle
All of the above
0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside
0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
0.75 t for both the straps on the inside and outside
0.625 t for both the straps on the inside and outside
There is a thick film of lubricant between the journal and the bearing
There is a thin film of lubricant between the journal and the bearing
The lubricant is forced between the journal and the bearing, by external pressure
There is no lubricant between the journal and the bearing
Increases the fatigue strength
Decreases the fatigue strength
Has no influence on fatigue strength
Alone has no influence on fatigue strength
2
4
8
16
Which are perfectly aligned
Which are not in exact alignment
Have lateral misalignment
Whose axes intersect at a small angle
50°C above upper critical temperature
50°C below upper critical temperature
50°C above lower critical temperature
50°C below lower critical temperature
Free from corrosion
Stronger in tension
Free from stress
Leak-proof
T sec3φ
T sec²φ
T/sec3φ
T cosecφ
14 ½° composite and full depth involute system
20° full depth involute system
20° stub system
None of the above
Ratio of coil diameter to wire diameter
Load required to produce unit deflection
Its capability of storing energy
Indication of quality of spring
F/bh
3F/2bh
2F/bh
4F/bh
Equal to
Less than
Greater than
None of these
Normal pitch
Axial pitch
Diametral pitch
Module
More
Less
Same
None of these