MECHDRIVES ALL MODULES WITH VERIFIED ANSWERS GRADED A+
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Course
MECHDRIVES
Institution
MECHDRIVES
MECHDRIVES ALL MODULES WITH VERIFIED ANSWERS GRADED A+
1. A mechanical power transmission system re-
ceives power from .
2. The most common fastener used to attach a
motor to a bedplate is a hex head bolt with
.
Driver & Prime Mover
two flat washers, a
lock washer, and a nut
3. An adjustab...
MECHDRIVES ALL MODULES WITH VERIFIED ANSWERS GRADED A+
1. A mechanical power transmission system re- Driver & Prime Mover
ceives power from .
2. The most common fastener used to attach a two flat washers, a
motor to a bedplate is a hex head bolt with lock washer, and a nut
.
3. An adjustable motor base is used . when it is necessary to
change the tension on
a belt or chain drive
4. A machine foundation should be designed to absorb any vibration
support the load of the machine, maintain created by the ma-
the alignment of coupled components, and chine
.
5. may remove a lockout on the power Only the person who
source of a piece of mechanical equipment. installed the lockout
6. To measure RPM, the rubber-tipped shaft on a end of the spinning
handheld tachometer must be held against the motor shaft
.
7. The grade of a bolt can be determined by the marking on the
. head of the bolt
8. In addition to dress rules, another rule to follow do not work on wet
with machinery is . floors
9. A device most often used to orient a surface so it Spirit level
is either parallel or perpendicular to the ground is
a .
10. Some rules for safe dress to wear around machin- wear tight fitting cloth-
ery when it is running are . ing and heavy duty
shoes
11. A spirit level can be used . in a vertical or horizon-
tal position
, MECHDRIVES ALL MODULES WITH VERIFIED ANSWERS GRADED A+
12. A soft foot condition on a motor mount should be shimming one foot
corrected by . only
13. The three types of shaft-to-adjacent-shaft power belt drive, chain drive,
transmission are . and gear drive
14. One revolution per second is equal to 60 RPM
.
15. The purpose of having a clutch connecting two allow the two shafts to
shafts together is to . be disconnected while
running
16. The groove in a shaft for a key is called a Keyseat
.
17. Two common methods used to load a mechani- Prony brake
cal drive system are using a dynamometer or a
.
18. The nominal height of a key is the height of the Tolerance
keystock without accounting for .
19. The best instrument to use when measuring the Dial caliper
inside width of a keyseat or the depth of the key-
seat is a .
20. As the torque on an electric motor increases Current increases
.
21. A motor shaft producing 4 ft-lb torque at 1313 1
RPM has Hp.
Use the formula P(out) = (TxS/5252)
22. Mechanical Power Efficiency is defined as the ratio of power out
. to power in
23. A ammeter is opened and placed clamp-on
around a wire to measure the current.
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