SM0486
ACCP SUBCOURSE NUMBER SM0486
MECHANICAL AND ELECTRO-MECHANICAL MEASUREMENT PRINCIPLES
EXERCISES FOR LESSON 4
1.
A major cause of vibration is the
a.
strobscope.
b.
imbalance of the rotating parts.
c.
displacement of the rotating parts.
d.
weight added to the counterpoise.
2.
A velocity pickup is used to
a.
measure the velocity of a moving object.
b.
connect the vibration meter to the cylindrical magnet.
c.
measure the revolutions per minute (RPM) of a rotating shaft.
d.
translate vibrations into electrical signals.
3.
The input impedance of a vibration meter is
a.
10 kilohms.
c.
600 ohms.
b.
1 kilohm.
d.
50 ohms.
4.
The vibration meter 1-117 has
a.
a variable frequency filter.
b.
an average velocity filter.
c.
four input channels.
d.
three external monitor jacks.
5.
The meter reading obtained from the vibration meter
a.
is direct reading.
b.
must be multiplied by the factor indicated on the operation selector.
c.
is direct reading for peak-to-peak displacement.
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