SM0486
ACCP SUBCOURSE NUMBER SM0486
MECHANICAL AND ELECTRO-MECHANICAL MEASUREMENT PRINCIPLES
EXERCISES FOR LESSON 3
1.
Three ways to measure angular rotation are
a.
degrees, revolutions, and radians.
b.
RPM, radians and revolutions.
c.
radians, velocity, and RPM.
d.
degrees, revolutions, and velocity.
2.
A radian is equal to approximately
360.
60.3.
a.
c.
90.
57.3.
b.
d.
3
The output of any shaft can be increased or decreased by means of
a.
speed converters.
c.
transducers.
b.
mechanical reducers.
d.
rotary reducers.
4.
The pulses of light which contact the photocell are generated by
a.
a mechanical tachometer.
b.
a disc with evenly spaced sections of reflective material.
c.
light generated by the unit under test.
d.
a solid white disc.
5.
You are using an optical tachometer with a disc that has 4 reflective
segments. 400 pulses are counted each second. The shaft is rotating at
a.
100 rpm.
c.
1600 rpm.
b.
400 rpm.
d.
6000 rpm.
103
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