Exam
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1)
Pico is what relation to micro?
1)
A)
1/10th
B)
1/100th
C)
1/1,000th
D)
1/1,000,000th
2)
86,000 expressed in scientific notation equals ________.
2)
A)
860 × 102
B)
8.6 × 10–4
C)
8.6 × 103
D)
8.6 × 104
3)
If your calculator displays 3.5 –06, the equivalent metric value is ________.
3)
A)
3.5 pico
B)
35 milli
C)
3.5 Meg
D)
3.5 micro
E)
35 micro
4)
Add 21 mA and 8000 µA and express the result in milliamperes.
4)
A)
218 mA
B)
21.8 mA
C)
29 mA
D)
290 mA
5)
The metric value 16 mA can be expressed as ________.
5)
A)
16 × 103 A
B)
16 × 10–6 A
C)
16 × 10–3 A
D)
16 × 100 A
1
6)
Determine the correct calculation.
6)
A)
4.7 m ÷ 1.24 = .379 m
B)
5600 × (9.6 × 10–7) = 5.376 milli
C)
89.4 k × 1.2 m = 1.072 km
D)
5.6 ÷ 17 m = 32.9 m
7)
Multiply 3 mA by 1000 × 10–6 and express the result in microamperes.
7)
A)
3000 µA
B)
3 µA
C)
30 µA
D)
300 µA
8)
Convert 0.00047 microfarads (µF) to the equivalent picofarads (pF).
8)
A)
4.7 pF
B)
47 pF
C)
470 pF
D)
0.47 pF
9)
The electrical symbol for voltage is ________.
9)
A)
R
B)
I
C)
C
D)
V
10)
To enter 0.00000056 into your calculator, use the entry ________.
10)
A)
5.6 –08
B)
00056 –05
C)
56 –06
D)
56 –08
11)
Express these two calculator displays in correct metric units:
5.6 –07 2.2 05
11)
A)
0.56 micro, 220 kilo
B)
56 micro, 22 kilo
C)
0.56 micro, 0.022 Meg
D)
56 micro, 220 kilo
2
12)
If you are trying to enter the number 16,000 into your calculator, a correct entry is ________.
12)
A)
1.6 02
B)
1.6 03
C)
1.6 04
D)
1.6 05
13)
The difference between scientific and engineering notation is ________.
13)
A)
single vs multiple digits before decimal point
B)
groupings of multiple of three digits
C)
powers of ten representation
D)
all of these
14)
0.6 kV is equal to ________.
14)
A)
6 V
B)
600 V
C)
60 V
D)
0.6 V
15)
Express 7.5 × 10–4 in milli, basic units, and micro.
15)
A)
75 milli, 0.075, 7500 micro
B)
7.5 milli, 0.075, 75000 micro
C)
0.75 milli, 0.00075, 750 micro
D)
75 milli, 0.0075, 750 micro
16)
Express 5.6 × 10–2 in milli, basic units, and micro.
16)
A)
5.6 milli, 0.056, 56000 micro
B)
5600 milli, 56, 560
C)
560 milli, 5.600, 5600 micro
D)
56 milli, 0.056, 56000 micro
3
17)
The electrical symbol for inductance is ________.
17)
A)
C
B)
V
C)
L
D)
I
18)
The metric prefix µ (micro) is normally associated with ________ measurements.
18)
A)
large
B)
small
C)
extremely large
D)
extremely small
19)
The value 1.2 × 10–6 can be expressed as ________.
19)
A)
0.00012
B)
1.2 M or Meg
C)
1.2 m or milli
D)
1.2 µ or micro
20)
The correct metric expression for 8.54 × 10–5 is ________.
20)
A)
85.4 kilo
B)
85.4 micro
C)
85.4 milli
D)
854 pico
21)
The symbol for electrical charge is ________.
21)
A)
V
B)
I
C)
Q
D)
C
22)
500 mA is equal to ________.
22)
A)
0.5 Amps
B)
0.0005 kA
C)
500,000 µA
D)
all of the above
4
23)
If your calculator displays 3.45607 × 106, the equivalent metric value with 4 significant digits is
________.
23)
A)
3.456 kilo
B)
3.456 Mega
C)
3.456 micro
D)
34.56 Mega
24)
Mega is what relation to kilo?
24)
A)
10 times
B)
100 times
C)
1000 times
D)
1,000,000 times
TRUE/FALSE. Write ‘T’ if the statement is true and ‘F’ if the statement is false.
25)
In engineering notation, 82,500 is expressed as 8.25 × 103.
25)
26)
0.00015 can be expressed in powers of ten as 1.5 × 10–4.
26)
27)
Scientific notation is the most widely used form of technical notation in electronics.
27)
28)
0.0047 amps can be expressed in metric units as 47 µA.
28)
29)
In engineering notation 0.0047 is expressed as 4.7 × 10–3.
29)
30)
The symbol µ is an abbreviation for 10–6 or micro.
30)
31)
Engineering notation is typically used in the expression of extremely large and small quantities in
the electronics field.
31)
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Answer Key
Testname: C1
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