7.
Refer to Figure 1-2.
If the rheostat is adjusted for 2.00 volts
across AB, what is the value of the unknown EMF if the slider is set
at 125.2?
a.
1.252 volts
b.
0.1252 volts
c.
1.018 volts
d.
12.52 volts
8.
Refer to Figure 1-4.
Which switch is used to select either the 1.6 or
.16 volt range?
a.
K
b.
S2
c.
S1
d.
S3
9.
How are measurements
read
on
the
low
range
of
the
two
range
potentiometer?
a.
Dial
readings
are
multiplied by a factor of .01
b.
Dial
readings
are
read directly
c.
Dial
readings
are
multiplied by a factor of 10
d.
Dial
readings
are
multiplied by a factor of .1
10.
The accuracy of the potentiometer is dependent upon what relationship?
a.
The correct relationship of the resistors used
b.
The correct relationship of the actual values of resistance
employed
c.
The correct relationship of the standard cell to the unknown EMF
d.
The correct relationship of the unknown voltage to the standard
cell current
11.
If the potentiometer reading is 1.3 volts and the volt box tap being
used has a multiplication factor of 10, what is the applied voltage to
the volt box?
a.
.13 volts
b.
13 volts
c.
130 volts
d.
3 volts
12.
How is the loading effect of the volt box reduced?
a.
By
using
high ohmic value internal resistors
b.
By
using
coupling capacitors
c.
By
using
low ohmic value internal resistors
d.
By
using
current shunts
11
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