Related Questions

Two advantages of using helical gears rather than spur gears in a transmission system are
A Strength and cost
B Strength and less end thrust
C Noise level and strength
D Noise level and economy
The term backlash is associated with
A servomotors
B induction relays
C gear trains
D any of the above
In a stable control system backlash can cause which of the following ?
A Underdamping
B Overdamping
C Poor stability at reduced values of open loop gain
D Low-level oscillations
which type of gears has point contact between two mating gears?
A helical gears
B spiral gears
C both (a) and (b)
D none of these
The other gears are the ............... gears which are those most used in normal driving.
A front
B onward
C abvance
D ahead
The gears are termed as medium velocity gears, if their peripheral velocity is
A 1-3 m/s
B 3-15 m/s
C 15-30 m/s
D 30-50 m/s
at the spur of the moment-
A difficult moment
B without delay
C great moment
D beautiful moment
Spur gear design normally begins with selecting this:
A Rack size
B Tooth size
C Gear size
D Pitch diameter
Smoking tells upon our body .Here 'tell upon' means ____ .
A benefits
B harms
C indicates
D strengthens
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is $$\tau $$. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be
A $$\frac{\tau }{2}$$
B $$\tau $$
C $$2\tau $$
D $$4\tau $$

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