Exam
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1)
What does the unit prefix Tequal?
1)
A)
109
B)
1015
C)
10–9
D)
1012
2)
Documentation is critical in electronics
2)
A)
so that critical results could be reproduced.
B)
so that someone else can follow and understand your work.
C)
so errors in calculations can be detected.
D)
All of the above
3)
To understand standards and ratings, you must
3)
A)
read the operator’s manual.
B)
ask the salesperson.
C)
first understand electricity.
D)
None of the above
4)
Round 89.1 to 1significantdigit.
4)
A)
89
B)
90
C)
89.0
D)
90.0
5)
Round 0.06234 to 2significantdigits.
5)
A)
0.1
B)
0.0623
C)
0.06
D)
0.062
1
6)
The number 100has
6)
A)
2significant digits.
B)
1significant digit.
C)
3significant digits.
D)
1, 2, or 3significant digits.
7)
Convert 12.250 inches to cm.
7)
A)
31 cm
B)
311.1 cm
C)
0.3 m
D)
31.115 cm
8)
Precision is
8)
A)
how accurate the measurement is.
B)
how close to the target value you get.
C)
how repeatableanumber is.
D)
apublished specification.
9)
2.625 x103/4.125 =
9)
A)
2.621 x103
B)
636.4
C)
636.364
D)
10.83 x103
10)
11 x104 + 10. x102 =
10)
A)
110x103
B)
10 x104
C)
111x103
D)
0.11 x104
11)
Convert 28.6 mm to inches.
11)
A)
1.126 inches
B)
1.12 inches
C)
1.13 inches
D)
11.1 inches
2
12)
If agroup of light bulbs were made with anominal average power of 100.0 watts with a
measurement accuracy of 5%, the range of the actual power would be
12)
A)
90 watts to 100watts.
B)
90.0 watts to 100. watts.
C)
95.0 watts to 105. watts.
D)
95 watts to 100watts.
13)
Electrical conductors
13)
A)
are often made of copper.
B)
can be air.
C)
connect the source to the load.
D)
All of the above
14)
Electricity is
14)
A)
current.
B)
alife force.
C)
aform of energy.
D)
voltage.
15)
Which of the following rules applies to significant figures?
15)
A)
Zeros between nonzero digitsare significant.
B)
The calculator will always display the correct number of significant digits.
C)
Leading zeros are significant.
D)
Zeros at the end of anumber are always significant.
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
16)
If you purchase 10 kgs of fish at $1.50/lb, the total cost is ________.
16)
17)
An electric motor is 4hp, or ________ watts.
17)
3
18)
If your motorcycle is traveling at avelocity of 65 mph, it is traveling at ________ ft/second.
18)
19)
In 12 hours adriver has traveled 625km. The average speed is ________ mph.
19)
Answer:
20)
Awaffle maker converts ________ energy to ________ energy.
20)
Answer:
electrical, heat
21)
You swim in a25–meter pool. It takes you 32 minutes to swim 500meters. Your speed in
mph is ________.
21)
Answer:
22)
The load and the source are connected with ________.
22)
Answer:
23)
Abasic electric circuit must consist of aset of ________, a________, and a(n) ________.
23)
Answer:
24)
The systematic problem solution procedure detailed in chapter one is
________, ________, ________, and ________.
24)
Answer:
25)
You are traveling in acar that obtains 40 mpg. Your trip is 831miles and gas is $1.29/liter.
Your cost for gas on the trip is ________.
25)
Answer:
26)
If you are walking at avelocity of 2ft/second, you are walking ________ mph.
26)
Answer:
27)
If gas is $1.29/liter and you need to fill a12 gallon tank, your bill is ________.
27)
Answer:
28)
Awind turbine converts ________ energy to ________ energy.
28)
Answer:
29)
Abattery converts ________ energy to ________ energy.
29)
Answer:
4
Answer:
Explanation:
30)
The energy conversion for asolar cell is ________ energy to ________ energy.
30)
TRUE/FALSE. Write ‘T’ if the statement is true and ‘F’ if the statement is false.
31)
Zeros between nonzero digitsare not significant.
31)
32)
Like charges attract and unlike charges repel.
32)
33)
The load converts one form of energy into electrical energy.
33)
34)
The input energy from all sources is electrical.
34)
35)
The source converts adifferent form of energy into electrical energy.
35)
36)
Accuracy quantifies how close aquantity is to some absolute standard.
36)
37)
Round down if the next digit to the right is 0to 4.
37)
38)
One kilometer equals 100meters.
38)
39)
Electrical energy transfers from the source to the load.
39)
40)
12 inches equal 1yard.
40)
41)
Electricity is aform of energy.
41)
5
42)
The force between electric charges can be used to perform work.
42)
43)
The input energy to all loads is electrical.
43)
44)
The electrical conductors guide the electrical energy from the source to the load.
44)
45)
Significant digitsrule is not required when performing unit conversions.
45)
6
Answer Key
Testname: C1
7