WorksheetsMechanical Systems 1 Review
Total questions: 17
Worksheet time: 11mins
In a mechanical system, it does not...
increase speed
increase torque
increase power
change direction of rotation
The most often used fastener used to attach a motor to a bedplate is a hex head bolt with...
one lock washer and one nut
one flat washer, one lock washer, and one nut
two flat washers, one lock washer, and one nut
two flat washers, two lock washers, and one nut
One revolution per second is equal to...
1 RPM
1000 RPM
60 RPM
6 RPM
As the torque on an electric motor increases, ...
current remains constant
current increases
current decreases
RPM increases
In a belt drive system, as the pulley ratio increases, shaft speed on the driven pulley will ___________ and shaft torque will ___________.
increase, increase
decrease, remain the same
increase, decrease
decrease, increase
A fractional horsepower (FHP) v-belt is used for...
low power, intermittent operation
constant running installations
conveyors
applications exceeding 100 HP
Pulley ratio is defined as the ratio of...
OD of the driven pulley to the OD of the driver pulley
pitch diameter of the driven to the pitch diameter of the driver
pitch diameter of the driver to the pitch diameter of the driven
shaft diameter of the driver to the shaft diameter of the driven
The sprocket ratio for a chain drive system having a driven sprocket with 54 teeth and a driver sprocket with 18 teeth is...
0.333
72
33
3
Diametral pitch is the ratio of ...
the pitch diameter to the outer diameter
outer diameter to the base circle diameter
pitch diameter to the pitch
number of teeth to the pitch diameter
Backlash is the...
distance between the bottom land and the top land of a gear
difference between the thickness of a tooth and the width of the tooth space
working depth of a gear
difference between the runout of two shafts having meshing gears installed on each shaft
Fill in the blanks
The ____________ ____________ __________ ________ Act in the United states covers workplace conditions for employees
(a)
The number of threads per inch, or pitch, of a screw or nut can be determined by the use of a __________ __________ ________.
(a)
Chrome plated steel shafts should be used ...
to improve the beauty of the machine
to resist rusting or corrosion
on shafts exceeding 6 inches in diameter
for flexibility
Name the two broad classifications of bearings
(a)
The pressure that is built up in most plain bearings and forms the oil film that makes possible their operation under heavy loads is called (a) action or hydromatic lubrication.
The types of loads placed on bearings are
radial
thrust
transaxial
coaxial
On a scale of 1-4, four being the most useful, how useful was this time spent
1
2
3
4
