Rad135 Ch1 Basic Mathematics Question Preview (ID: 55283)


This Content Covers Chapter 1 (Basic Mathematics) From The Text To Help You Prepare For The Midterm Exam In Rad135. TEACHERS: click here for quick copy question ID numbers.

What is the SI unit for measuring electric current?
a) ampere
b) volt
c) potential difference
d) frequency

Using dimensional analysis, convert the speed of light from 3 x 10^8 m/s to mph.
a) 3 x 10^5 mph
b) 6.71 x 10^8 mph
c) 609.34 mpm
d) 6.71 x 10^5 mph

Given 1/RT = 1/R1 + 1/R2 + 1/R3 . Solve for RT, if R1=7, R2 = 3 and R3 = 5.
a) 0.67
b) 1.48
c) 6
d) 15

2/3 + 1/2 = ?
a) 3/5
b) 2/6
c) 7/6
d) 5/3

Round 82.1591 to four significant digits.
a) 82.00
b) 82.15
c) 82.16
d) 83.00

If the primary voltage is 120 volts and 3 amperes, what will the secondary voltage be if the turns ratio is 1000:1?
a) 3 mA
b) 36 kV
c) 120 kV
d) 120 V

How many significant digits does 45.04 have?
a) 0
b) 1
c) 4
d) depends on the units

Which unit is equal to 10 to the 6th power?
a) deca
b) milli
c) nano
d) mega

What would the exposure time in milliseconds (ms) at 55 mAs using 100 mA?
a) 0.55 ms
b) 5.5 ms
c) 55 ms
d) 550 ms

The maximum number of electrons that can occupy a given electron shell is equal to 2n^2, where n is the principal quantum. How many electrons can occupy the Q shell? Hint: in K shell n=1, in L shell n=2, in M shell n=3 ...
a) 14 e-
b) 16 e-
c) 64 e-
d) 98 e-

Simplify in terms of x: ( (3x^2)^2) + x^3 x) / 2x
a) 41x^3
b) 10x^3
c) 10x^2
d) 5x^3

What must be done first in the order of operations?
a) unary minus (-) or unary plus (+)
b) exponents
c) multipication and division
d) perform all operations inside grouping symbols

What is the prefix for 10^6?
a) micro
b) pico
c) mega
d) hecto

What is the standard unit of time?
a) minute
b) second
c) hour
d) millisecond

Round 45.04167 to 2 decimals.
a) 45
b) 45.0
c) 45.04
d) 45.042

1,825 / 0.2 = ?
a) 9,125
b) 81.25
c) 8,125
d) 912.5

2(3 + 5) + 1 -17 = ?
a) -5
b) 14
c) 0
d) 5

Solve for R: 2/3 + 1/2 = 1/R
a) 6/7
b) 7/6
c) 1.66
d) 0.66

4/5 x 1/3 = ?
a) 1/3
b) 22/15
c) 15/22
d) 4/15

What is the prefix for 10^-9?
a) kilo
b) nano
c) hecto
d) deci

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