Deck 5: Scientific Notation and Metric Prefixes

Question 1

When rounding off to three significant digits, if the fourth digit is ____ or greater, the third digit should be rounded off to the next higher number.

A)4
B)5
C)6
D)7

Answer 1

B

Question 2

The numbers involved in calculations in the field of electricity and electronics are often extremely large or extremely small.

Answer 2

True

Question 3

The term quantum notation refers to a special way of using powers of 10.

Answer 3

False

Question 4

____ (M) equals 1,000,000.

A)Micro
B)Milli
C)Macro
D)Mega

Question 5

The advantage of using engineering notation is that the calculator will display scientific notation in steps of 10,000 only, which corresponds to common engineering prefixes.

Question 6

Prefixes called engineering units or engineering notation are in steps of 100 instead of 10.

Question 7

To overcome the inherent inconvenience of dealing with very large or very small numbers, it is customary to modify the basic measuring units by attaching a prefix to their multiples or submultiples.

Question 8

The ____ method demands that a decimal point be placed behind the first significant digit when the number is changed into powers of 10.

A)electronic notation
B)digital notation
C)scientific notation
D)metric notation

Question 9

When powers of 10 are to be divided, divide their exponents.

Question 10

For more than a generation, electrical technicians made use of a tool known as the ____, which requires knowledge and application of the powers of 10 principle.

A)schematic
B)slide rule
C)calculator
D)abacus

Question 11

When converting the number 0.00020543 to scientific notation, it is important to recognize that the numeral ____ is the first significant digit to be retained.

A)0
B)2
C)4
D)5

Question 12

The invention and widespread use of modern electronic calculators has relieved us of the need to manipulate numbers in scientific notation.

Question 13

Zeros are not considered to be significant unless they are preceded by a number other than zero.

Question 14

Many scientific calculators have a function indicated as ____ that displays the answers in engineering units.

A)EN
B)ENG
C)EGR
D)UEN

Question 15

Most practical calculations are generally limited to only ___ significant digits.

A)one
B)two
C)three
D)four

Question 16

One kilo means ____ times a unit.

A)10
B)100
C)1,000
D)10,000

Question 17

One thousand volts can be called one ____.

A)decivolt
B)hectovolt
C)kilovolt
D)megavolt

Question 18

In order to determine the scientific notation for a number, count the number of spaces that the decimal point has to be moved in order to appear behind the first digit.This count, the number of spaces moved, becomes your exponent in the power of 10.

Question 19

Personnel working in the field of electricity and electronics are frequently called upon to perform mathematical calculations in order to predict or confirm proper circuit operation.

Question 20

When powers of 10 are to be multiplied, ____ their exponents.

A)add
B)subtract
C)multiply
D)divide