BELT AND PULLEY DRIVE Flashcards
An engine is to be used to drive a
hammer mill to run at 3,000 rpm speed.
How would you couple the hammer mill to
the engine?
a. By directly connecting the engine to
the mill and increase the throttle rpm of
the engine.
b. By connecting the engine to the mill
using belt and pulley drive to reduce its
speed while running the mill at 3000 rpm.
c. By running the mill at the engine
optimum speed.
d. None of the above
By connecting the engine to the mill
using belt and pulley drive to reduce its
speed while running the mill at 3000 rpm.
If two shafts are perpendicular with
each other, what type of drive system
would you recommend?
a. Flat belt
b. V-belt
c. Sprocket and chain
d. All of the above
Flat belt
When one pulley is to be driven
horizontally and the other pulley is to be
driven vertically, what drive system would
you recommend?
a. Open drive
b. Quarter-turn drive
c. Cross drive
d. All of the above
Quarter-turn drive
If two parallel flat pulleys are to be
driven in opposite direction, what drive
would you recommend?
a. Open-belt drive
b. Cross drive
c. Quarter-turn drive
d. None of the above
Cross drive
The drive used to run perpendicular
shafts.
a. Open-belt drive
b. Cross drive
c. Quarter-turn drive
d. None of the above
Quarter-turn drive
A machine element used to drive flat
belts.
a. Pulley
b. Sprocket
c. Sheave
d. None of the above
PULLEY
A pulley that is used to tighten the belt
of a drive system.
a. Flat pulley
b. Idler pulley
c. V-pulley
d. None of the above
Idler pulley
Flat pulleys are usually provided with
crown to ___.
a. prevent the belt from slipping
b. tighten the belt
c. increase the strength of pulley
d. None of the above
prevent the belt from slipping
Flat pulleys are crowned by making
the center diameter larger than the edge
diameter by ___.
a. 1/8 in. per foot of face width
b. 1/8 in. per foot of the pulley diameter
c. 1/8 in. per foot of the belt with
d. None of the above
1/8 in. per foot of the pulley diameter
If the driver pulley diameter is
increased, the speed of the driven pulley
will___.
a. decrease
b. increase
c. rotate at the same speed
d. None of the above
increase
The commonly used belt drive for
engine-driven multi-pass rice mills.
a. Flat belt
b. V-belt
c. Groove belts
d. None of the above
FLAT BELT
The belt transmission suitable for
cross-drive system.
a. V-belt
b. Timing V-belt
c. Flat belt
d. None of the above
Flat belt
When buying flat belts, the common
parameters used are___.
a. width and thickness
b. width and ply number
c. width and weight
d. None of the above
width and ply number
The minimum allowance for face
width of a flat pulley with under 305-mm
belt width.
a. 25 mm
b. 51 mm
c. 76 mm
d. None of the above
25 mm
The minimum allowance for face
width of a flat pulley with over 610-mm
belt width.
a. 25 mm
b. 51 mm
c. 76 mm
d. None of the above
76 mm