If a typical neuron can be represented by a cylinder 20 μ m in diameter and 80 μ m long, then how many might fit into a human brain?

Choose one answer.

	a. 1 Megacells
	b. 1 Kilocells
	c. 100 Teracells
	d. 100 Gigacells
	e. 1000 Teracells

Question 2

The legs of a right triangle are measured to be 12.2 +/- 0.1 and 2.8 +/- 0.1 mm. What is the area of the triangle?

Choose one answer.

	a. 17.1 +/- 0.82 mm ²
	b. 17.1 +/- 0.25 mm ²
	c. 17 +/- 0.5 mm ²
	d. 17.1 +/- 0.06 mm ²
	e. 17.1 +/- 0.63 mm ²

Question 3

Two gauge pressures P₁ and P₂ are measured in order to determine the difference pressure across an orifice, P_d. Several measurements are made of each and it is found that P₁ = 25 +/- 1.8 mm Hg and P2 = 12 +/- 0.6 mm Hg. What is the estimate of the difference pressure P_d (mm Hg) and its standard deviation?

Choose one answer.

	a. 13, 1.9
	b. 13, 1.4
	c. 12, 1.4
	d. 12, 1
	e. 1, 12

Question 4

The length of a pipe is measured with a meter stick. This measurement requires three uses since the pipe is more than 2 meters long. The first measurement is 1 m. The second measurement is 1m. The third measurement is 0.76m. The total length of the meter stick in the sum of the three measures. Each measurement can be made to +/- 0.15 cm. What is the total length and estimated error in m?

Choose one answer.

	a. 2.76 +/ 0.0026 m
	b. 2.75 +/- 0.026 m
	c. 2.76 +/- 0.0015 m
	d. 2.76 +/- 0.029 m
	e. 2.76 +/- 0.0045 m

Question 5

Calculate the approximate number of grains of sand in a layer 10 m deep covering the entire surface of the planet earth.

Choose one answer.

	a. 10¹⁰
	b. 10¹²
	c. 10²⁵
	d. 10³¹
	e. 10^{− 3}

Question 6

The masses of 8 nominally identical items were determined to be 4.23 g, 4.37 g, 3.98 g, 4.75 g, 4.12 g, 4.45 g, 4.71 g, and 3.35 g. What are the mean and standard deviation of the masses?

Choose one answer.

	a. 4.24, 0.45
	b. 4.2, 0.5
	c. 4.2, 0.4
	d. 0.4, 4.2
	e. 4.24, 0.43

Question 7

The volume of gasoline dispensed at a commercial gas station for a nominal 10 L volume was measured on five separate trials to be 9.89 L, 10.02 L, 10.3 L, 9.48 L, and 9.91 L. What are the mean and standard deviations of the volume dispensed for the five trials?

Choose one answer.

	a. 9.97, 0.11
	b. 9.92, 0.3
	c. 9.0, 0.2
	d. 1.00, 0.1
	e. 1.00, 0.15

Question 8

Compute the standard deviation of the following measures of bearing diameter: 5.80 mm, 5.83 mm, 5.82 mm, 6.11 mm, 5.80 mm.

Choose one answer.

	a. 0.13 mm
	b. 0.1 mm
	c. 0.15 mm
	d. 0.2 mm
	e. 0.03 mm

Question 9

A box measures 400 μm by 300 μm by 200 μm . How many such boxes of water would it take to fill a liter?

Choose one answer.

	a. 4.2x 10⁴
	b. 4.2x 10⁷
	c. 4.2x 10⁵
	d. 2.4x 10⁶
	e. 2.4x 10⁴

Question 10

A radio station broadcasts at 89.2 MHz. What is the duration of one cycle of the primary oscillation?

Choose one answer.

	a. 11.2 ns
	b. 112 ns
	c. 89.2 ps
	d. 89.2 ns
	e. 11.2 fs

Question 11

A typical incandescent light bulb consumes 0.1kW. How many such bulbs can a 400 MW source power?

Choose one answer.

	a. 4x10⁶
	b. 4x10³
	c. 400x10⁶
	d. 4x10⁴
	e. 4x10⁷

Question 12

A ping pong ball is 40 mm in diameter. Calculate the approximate number required to fill an empty swimming pool 60 yards x 30 yards x 6 feet deep.

Choose one answer.

	a. 1x10 ⁸
	b. 5x10¹⁰
	c. 5x10 ⁵
	d. 5x10¹¹
	e. 5000

Question 13

A set of new car tires has a tread depth of 10/32 ". The tires are declared unsafe by the owner at a tread depth of 2/32 ". The tires are expected to last 100,000 km. How many miles per 1/32 " of tread might the owner expect to use the tires?

Choose one answer.

	a. 7800
	b. 14000
	c. 3600
	d. 1200
	e. 5200

Question 14

The following data were recorded for the length of an elastic string (m) as a function of load (N): (0.51, 0.1), (0.52, 0.2), (0.6, 0.3), (0.8, 0.5), (0.9,0.6), (0.95, 0.7), (0.98, 0.8). Plot the length of the string versus load. Estimate the length of the string without a load.

Choose one answer.

	a. 0.5 m
	b. 0.6 m
	c. 1.0 m
	d. 0.75 m

Question 15

The following data were recorded for the length of an elastic string (m) as a function of load (N): (0.51, 0.1), (0.52, 0.2), (0.6, 0.3), (0.8, 0.5), (0.9,0.6), (0.95, 0.7), (0.98, 0.8). Plot length as a function of load. Estimate the length of the string at full extension.

Choose one answer.

	a. 1 m
	b. 0.75 m
	c. 0.5 m
	d. 0.8 m
	e. 0.95 m

Question 16

Choose one answer.

	a. 0.7 m
	b. 0.8 m
	c. 0.6 m
	d. 0.55 m
	e. 0.9 m

Question 17

The temperature of a sensor reads temperature (C) as a function of time (s) as (25,10), (60,30), (80,45), (92,55), (98,60), (102,90).
Plot ln ((T − 103)/(20 − 103)) versus t. What is the slope in s^-1?

Choose one answer.

	a. -0.057
	b. -0.57
	c. 0.57
	d. 5.7
	e. -0.0057

Question 18

The temperature of a sensor reads temperature (C) as a function of time (s) as (45,2), (60,5), (80,10), (92,25), (98,50), (102,100).
Plot ln ((T − 103)/(20 − 103)) versus t. What is the slope in s^{− 1} ?

Choose one answer.

	a. -0.039
	b. -0.39
	c. -.93
	d. 3.9
	e. -0.0039

Question 19

The depth of liquid in a container increases approximately linearly with time. The following measurements were taken for (t(s), d(depth cm)): (0,0), (10, 1), (30, 5), (60, 12), (120, 30), (200, 50). Find the average rate of increase in cm/s from the slope of a least-squares fit line.

Choose one answer.

	a. 0.26
	b. 0.29
	c. 0.23
	d. 0.30
	e. 4.0

Question 20

The depth of liquid in a container increases approximately linearly with time. The following measurements were taken for (t(s), d(depth cm)): (0,0), (10, 1), (30, 5), (60, 12), (120, 30), (200, 50). Estimate the height of the liquid in cm at 150s from a least-squares fit line.

Choose one answer.

	a. 37
	b. 35
	c. 39
	d. 33
	e. 40

Question 21

A temperature probe provides the following data as a function of time (T(C), t(s)): (99, 2.0), (95, 11.0), (91,13.5), (85,17.0), (78,41), (69, 45), (46, 68), (49,112). Plot the data. You may use a spreadsheet or other data analysis system. Extrapolate using a least-squares line to find the temperature at t=0s.

Choose one answer.

	a. 105 C
	b. 96 C
	c. 90 C
	d. 125 C
	e. 85 C

Question 22

Choose one answer.

	a. 90 C
	b. 65 C
	c. 22 C
	d. 45 C
	e. 40 C

Question 23

A temperature probe provides the following data as a function of time (T(C), t(s)): (99, 2.0), (95, 11.0), (91,13.5), (85,17.0), (78,41), (69, 45), (46, 68), (49,112). Plot the data. You may use a spreadsheet or other data analysis system. Which data pair deviates most from the least-squares line?

Choose one answer.

	a. 99, 2
	b. 95, 11
	c. 85, 17
	d. 46, 68
	e. 69, 45

Question 24

Choose one answer.

	a. 0.51 degrees C/s
	b. -0.51 degrees C/s
	c. 96 degrees C/s
	d. 1.7 degrees C/s
	e. -1.7 degrees C/s

Question 25

A sensor displays the following data as a function of time (s) (reading, time): (15, 2), (18,5), (32,10), (41,15), (53,25), (65,38). Plot the data.
Extrapolate to estimate the reading at t=0.

Choose one answer.

	a. 15
	b. 5
	c. 0
	d. 3
	e. 20

Question 26

A sensor displays the following data as a function of time (s) (reading, time): (15, 2), (18,5), (32,10), (41,15), (53,25), (65,38). Plot the data.
Interpolate to estimate the reading at t=20 s.

Choose one answer.

	a. 43
	b. 39
	c. 51
	d. 12
	e. 53

Question 27

A sensor displays the following data as a function of time (s) (reading, time): (15, 2), (18,5), (32,10), (41,15), (53,25), (65,38). Estimate the slope in s^-1 from a least-squares fit line.

Choose one answer.

	a. 1.4
	b. 1.8
	c. 1.2
	d. 1.0
	e. 2.0

Question 28

A sensor displays the following data as a function of time (s) (reading, time): (15, 2), (18,5), (32,10), (41,15), (53,25), (65,38). Plot the data.
Interpolate with a linear least-squares fit of all the data to estimate the reading at t=33s.

Choose one answer.

	a. 62
	b. 68
	c. 54
	d. 72
	e. 45

Question 29

A 12 bit ADC may have _____ unique output conditions.

Choose one answer.

	a. 2¹¹
	b. 2¹⁰
	c. 12²
	d. 12¹⁰
	e. 2¹²

Question 30

A 16 bit ADC may have ____ unique output conditions.

Choose one answer.

	a. 2¹⁶
	b. 16¹⁰
	c. 12¹⁶
	d. 10¹⁶
	e. 10²⁴

Question 31

A 24 bit ADC may have _____ unique output conditions.

Choose one answer.

	a. 2²⁴
	b. 2¹⁰
	c. 24²
	d. 12²⁴
	e. 24²⁴

Question 32

A 3dB attenuator and a 6dB attenuator in series provide a total attenuation of:

Choose one answer.

	a. 9dB
	b. 27dB
	c. 18dB
	d. 12dB
	e. None of the above

Question 33

A 6dB attenuator and a 50dB attenuator in series provide a total attenuation of:

Choose one answer.

	a. 300dB
	b. 56dB
	c. 5.4dB
	d. 50dB
	e. None of the above

Question 34

A bridge circuit __________________________.

Choose one answer.

	a. Is useful for comparing resistances.
	b. Permits current passage through a barrier.
	c. Measures the current bypassing a "bridge."
	d. Gates current flow periodically.
	e. None of the above.

Question 35

A current source __________________.

Choose one answer.

	a. Can supply an infinite current upon demand
	b. Supplies a constant current regardless of voltage within practical limits
	c. Is the source in use at the present
	d. Can supply AC or DC upon demand
	e. Supplies current varying linearly with the output voltage

Question 36

A digital signal __________________.

Choose one answer.

	a. Is represented by numbers ranging from 1 to 10
	b. Corresponds to the output of the digital-to-analog converter
	c. Is represented by 10 bits of data
	d. Takes on discrete values over a range
	e. None of the above

Question 37

A filter is an AC circuit that separates signals based upon ___________.

Choose one answer.

	a. Amplitude
	b. Voltage
	c. Frequency
	d. Time
	e. Duration

Question 38

A low-pass filter permits the passage of _________.

Choose one answer.

	a. Low frequency signals
	b. Small voltages
	c. Small currents
	d. DC signals
	e. All of the above

Question 39

A power gain of 3 dB corresponds to a factor of ___.

Choose one answer.

	a. 2
	b. 4
	c. 3
	d. 6
	e. 1000

Question 40

A power gain of 30 dB corresponds to a factor of ____.

Choose one answer.

	a. 10
	b. 30
	c. 100
	d. 1000
	e. 3000

Question 41

A rectifier is used to limit ____________.

Choose one answer.

	a. Current amplitude
	b. Current frequency
	c. Voltage amplitude
	d. Voltage noise
	e. Current direction

Question 42

A signal (in the context of this course) is ___________________.

Choose one answer.

	a. An indication to start or stop an activity
	b. An unexpected event
	c. An electrical current
	d. A detectable quantity used to communicate information
	e. None of the above

Question 43

A signal with a "live zero" is useful for detecting __________.

Choose one answer.

	a. Equipment malfunction
	b. A fluctuating digital readout
	c. A non-zero rest state for an analog signal
	d. A faulty digital readout
	e. None of the above

Question 44

A simple way to filter out high frequencies is to place _____________.

Choose one answer.

	a. An inductor in parallel with the load
	b. A capacitor in parallel with the load
	c. A capacitor in series with the load
	d. A rapid switch in series with the load
	e. None of the above

Question 45

A simple way to filter out high frequencies is to place _________________.

Choose one answer.

	a. An inductor in parallel with the load
	b. An inductor in series with the load
	c. A capacitor in series with the load
	d. A rapid switch in series with the load
	e. None of the above

Question 46

A simple way to filter out low frequencies is to place ______________.

Choose one answer.

	a. An inductor in series with the load
	b. A capacitor in parallel with the load
	c. A capacitor in series with the load
	d. A rapid switch in series with the load
	e. None of the above

Question 47

A simple way to filter out low frequencies is to place _________________.

Choose one answer.

	a. An inductor in series with the load
	b. A capacitor in parallel with the load
	c. An inductor in parallel with the load
	d. A rapid switch in series with the load
	e. None of the above

Question 48

A transformer permits the conversion of __________.

Choose one answer.

	a. AC current to DC current
	b. DC current to AC current
	c. Change of frequency
	d. Change of power consumed
	e. Voltage of AC current

Question 49

AC amplitude may be measured by ________________.

Choose one answer.

	a. Frequency
	b. Period
	c. Frequency and period
	d. Duration
	e. Peak-to-peak, RMS, or average amplitude

Question 50

Aliasing in signal digitization occurs when _____________.

Choose one answer.

	a. A signal is digitized too rapidly
	b. A signal is not digitized rapidly enough
	c. A signal is not digitized with enough amplitude resolution
	d. A connection is mislabeled
	e. All of the above

Question 51

Aliasing can be avoided by ____________.

Choose one answer.

	a. Rapid or over-sampling
	b. Using a band-pass filter before digitization
	c. Adjusting the amplifier gain appropriately
	d. Rapid over-sampling and/or using a band-pass filter before digitization
	e. Labeling all inputs correctly

Question 52

Alternating Current _________________.

Choose one answer.

	a. Oscillates at 60 Hz
	b. Changes amplitudeand/or direction with time
	c. Is always positive
	d. Decays with time
	e. None of the above

Question 53

An analog signal _______________.

Choose one answer.

	a. Is continuously variable over a range
	b. Takes on a finite number of discrete values
	c. Is measured in units of electrical current or flow rate
	d. Is measured by voltage
	e. Is determined continuously in time

Question 54

Frequency (f) is related to period (T) by __________.

Choose one answer.

	a. A reciprocal relationship f = 1/T
	b. A product relationship f = kT
	c. Counting the number of periods in a fixed time
	d. f = sin(T)
	e. None of the above

Question 55

An important disadvantage of voltage signals is:

Choose one answer.

	a. Voltage drop along the conductors
	b. Stray signals from lightning
	c. Difficulty measuring voltage accurately
	d. Radio-frequency interference
	e. None of the above

Question 56

Period( T) is related to frequency (f) by __________.

Choose one answer.

	a. A reciprocal relationship T = k/f
	b. A product relationship f = kT
	c. Counting the number of periods in a fixed time
	d. f = sin(T)
	e. None of the above

Question 57

The nomenclature "live zero" indicates ________.

Choose one answer.

	a. A drifting baseline
	b. A fluctuating digital readout
	c. A non-zero rest state for an analog signal
	d. A faulty digital readout
	e. None of the above

Question 58

The voltage across a 10 Ohm resistor is measured to be 4 Volts.
What is the power dissipated in that resistor?

Choose one answer.

	a. 1.6 Watts
	b. 0.16 Watts
	c. 4 Watts
	d. 0.4 Watts
	e. 400 Watts

Question 59

Three resistors (R₁, R₂, R₃) connected in parallel present a total resistance of:

Choose one answer.

	a. R₁+R₂ + R₃
	b. 1/R₁ + 1/R₂+1/R₃
	c. R₁xR₂xR₃/(R₁+R₂+R₃)
	d. R₁/R₂ + R₂/R₃ + R₃/R₁
	e. R1xR₂xR₃/(R₂xR₃ + R₁xR₃+R₁xR₂)

Question 60

Three resistors (R₁, R₂, R₃) in series present a total resistance of:

Choose one answer.

	a. R₁ + R₂ + R₃
	b. 1/R₁ + 1/R₂+1/R₃
	c. R₁xR₂xR₃/(R₁+R₂+R₃)
	d. R₁/R₂ + R₂/R₃ + R₃/R₁
	e. None of the above

Question 61

100 Angstroms is equivalent to:

Choose one answer.

	a. 10 nm
	b. 100 nm
	c. 1 μ m
	d. 0.1 μ m
	e. 100 nm

Question 62

Calipers enable measurements of lengths finer than ____.

Choose one answer.

	a. μ m
	b. mm
	c. nm
	d. cm
	e. fm

Question 63

Equipment may be machined to tolerances approaching ____.

Choose one answer.

	a. μ m
	b. mm
	c. nm
	d. cm
	e. pm

Question 64

Equipment may be machined to tolerances approaching ____.

Choose one answer.

	a. 10^{− 6} m
	b. 10^{− 1} m
	c. 10^{− 2} m
	d. 10^{− 3} m
	e. 10 ⁶ m

Question 65

Molecular dimensions are on the order of ____.

Choose one answer.

	a. nm
	b. mm
	c. cm
	d. pm
	e. fm

Question 66

Molecular dimensions are on the order of ____.

Choose one answer.

	a. 10⁻⁹ m
	b. 10⁻³ m
	c. 10⁻² m
	d. 10⁻¹² m
	e. 10⁻¹⁵ m

Question 67

A Vernier scale is useful for ____________.

Choose one answer.

	a. Reading subdivisions of gradations
	b. Using a magnifier
	c. Reading tenths of mm
	d. Reading tenths of cm
	e. Reading fractions of the entire scale

Question 68

Visible light microscopy can view features as small as a few ____.

Choose one answer.

	a. mm
	b. pm
	c. nm
	d. μ m
	e. fm

Question 69

A clock accurate to within one second per year has a possible drift of approximately on part in:

Choose one answer.

	a. 10⁷
	b. 10⁸
	c. 10⁶
	d. 10⁹
	e. 10¹⁰

Question 70

A human-operated stop watch may be expected to be precise to within _____.

Choose one answer.

	a. 10 ms
	b. 50 ms
	c. 300 ms
	d. 1 s
	e. 5 s

Question 71

A typical human reaction time is on the order of ______.

Choose one answer.

	a. 200 ms
	b. 500 ms
	c. 10 ms
	d. 50 ms
	e. 1 s

Question 72

The current standard for time measurement is accurate to one part in ___.

Choose one answer.

	a. 10 ⁵
	b. 10¹⁰
	c. 10¹⁵
	d. 10⁵⁰
	e. 10²⁵

Question 73

The fastest chemical reactions can take place on time scales of ___.

Choose one answer.

	a. ps
	b. ns
	c. ms
	d. μ s
	e. fs

Question 74

The time required for light or other electromagnetic signals to travel 1 m is approximately ________.

Choose one answer.

	a. 1 ms
	b. 1 x 10^-9 s
	c. 1 x 10^-23 s
	d. 1 x 10^-5 s
	e. 1 x 10^-60 s

Question 75

The time required for light or other electromagnetic radiation to travel a nm is approximately ______.

Choose one answer.

	a. 3 x 10⁻¹⁸ s
	b. 3 x 10⁻¹⁶ s
	c. 3 x 10⁻²⁰ s
	d. 3 x 10⁻¹⁰ s
	e. 3 fs

Question 76

A column of mercury 1 m high exerts a pressure equivalent to:

Choose one answer.

	a. 33 ft water
	b. 9.8 ft water
	c. 45 ft water
	d. 12 ft water
	e. 760 psi

Question 77

A column of vegetable oil 33 ft high exerts a pressure of:

Choose one answer.

	a. 0.9 atm
	b. 33 atm
	c. 1 psi
	d. 1.1 atm
	e. 1000 torr

Question 78

A column of water 33 ft high exerts a pressure of:

Choose one answer.

	a. 1 atm
	b. 33 atm
	c. 1 psi
	d. 13 psi
	e. 1000 torr

Question 79

A force of 1 Newton is approximately equal to:

Choose one answer.

	a. 9.8 lb_f
	b. 32.2 lb_f
	c. 0.225 lb_f
	d. 4.448 lb_f
	e. 0.138 lb_f

Question 80

A force of 5 N is applied at the end of a 20 cm wrench. The applied torque is ____.

Choose one answer.

	a. 0.10 Nm
	b. 244 Nm
	c. 1 Nm
	d. 2440 Nm
	e. 1220 Nm

Question 81

A mass of 60 lb_m at the end of a yard-long pipe accelerated by earth's gravity orthogonal to the pipe pivot exerts a torque of _____ at the pivot at the other end of the pipe.

Choose one answer.

	a. 122 Nm
	b. 244 Nm
	c. 980 Nm
	d. 2440 Nm
	e. 1220 Nm

Question 82

A pressure gauge reads 112 torr gauge at sea level. The total pressure is approximately ______.

Choose one answer.

	a. 872 torr
	b. 41 psi
	c. 1470 torr
	d. 1.12 atm
	e. 760 mm Hg

Question 83

A pressure gauge reads 24.3 psi gauge at sea level. The total pressure is approximately _______.

Choose one answer.

	a. 2.65 atm
	b. 45 psi
	c. 1470 torr
	d. 3.65 atm
	e. 760 mm Hg

Question 84

A strain gauge increases resistance by 0.08 Ohm/mm of extension at 20 degrees C. An increase of 0.023 Ohms in resistance indicates a strain of ____.

Choose one answer.

	a. 0.124 mm
	b. 0.288 mm
	c. 0.300 mm
	d. 0.385 mm
	e. 0.060 mm

Question 85

A strain gauge increases resistance by 0.043 Ohm/cm of strain. An increase in resistance of 0.019 Ohms corresponds to a strain of ____.

Choose one answer.

	a. 4.4 mm
	b. 4.4 cm
	c. 0.44 mm
	d. 0.44 m
	e. 0.44 μ m

Question 86

A strain gauge increases resistance by 0.093 Ohm/cm of strain. An increase in resistance of 0.012 Ohms corresponds to a strain of _____.

Choose one answer.

	a. 1.3 mm
	b. 1.3 cm
	c. 0.44 mm
	d. 0.44 m
	e. 0.44 μ m

Question 87

A torque of 25 lb-ft is equivalent to:

Choose one answer.

	a. 34 Nm
	b. 30 Nm
	c. 32 Nm
	d. 9.8 Nm
	e. 160 Nm

Question 88

A vendor reports that a vacuum pump can provide 25 psi of vacuum. What is wrong with this claim?

Choose one answer.

	a. The vendor does not specify gauge or absolute pressure.
	b. The vendor does not specify static of dynamic pressure.
	c. The vendor does not use SI units.
	d. The vendor claims a non-sensible specification.
	e. All of the above.

Question 89

Mattias's mass is 185 lb_m. His mass in kg is approximately ____.

Choose one answer.

	a. 85 kg
	b. 93 kg
	c. 95 kg
	d. 100 kg
	e. 185 kg

Question 90

Mattias's mass is 85.2 kg. His mass in lb_m is approximately ___.

Choose one answer.

	a. 188 lb_m
	b. 37.9 lb_m
	c. 32.2 lb_m
	d. 225 lb_m
	e. 204.5 lb_m

Question 91

A measurement of 212 degrees Rankine corresponds to ___________.

Choose one answer.

	a. 118 degrees Kelvin
	b. The boiling point of water
	c. − 12 degrees Fahrenheit
	d. 0 degrees Centigrade
	e. A physical impossibility

Question 92

A newscast reports that the temperature at the surface of a newly discovered planet orbiting a distant star is -502 degrees Fahrenheit. What is wrong with this claim?

Choose one answer.

	a. One cannot measure temperatures from a distance.
	b. There is no temperature measure in a vacuum.
	c. The reported temperature is below absolute zero.
	d. The temperature should be reported in degrees Kelvin.
	e. None of the above

Question 93

A temperature of 32 degrees Fahrenheit corresponds to ______.

Choose one answer.

	a. 273.15 degrees Kelvin
	b. 0 degrees Kelvin
	c. 212 degrees Centigrade
	d. 32 degerees Centigrade
	e. The boiling point of water

Question 94

A thermistor differs from a thermocouple in that:

Choose one answer.

	a. A thermistor requires a current souce whereas a thermocouple does not
	b. A thermocouple requires a current source whereas a thermistor does not
	c. A thermistor is smaller
	d. A thermocouple requires requires precise voltage measurements
	e. A thermocpule consists of two thermistors

Question 95

A thermistor has a ____________.

Choose one answer.

	a. Temperature-dependent resistance
	b. Temperature-dependent thermal conductivity
	c. Temperature-dependent voltage
	d. Temperature-dependent density
	e. Temperature-dependent resistance to heat transfer

Question 96

A thermocouple produces a _________________.

Choose one answer.

	a. Temperature-dependent voltage
	b. Temperature-dependent resistance
	c. Temperature-dependent mass
	d. Temperature-dependent capacitance
	e. None of the above

Question 97

An alcohol-in-glass thermometer typically relies upon _____ to reflect the temperature.

Choose one answer.

	a. Thermal expansion of the liquid
	b. Transfer of heat from the alcohol to the glass
	c. The amount of alcohol in the bulb
	d. The color of the dye used
	e. Evaporation of the alcohol

Question 98

Bimetallic thermometers typically work because of _____________.

Choose one answer.

	a. Differences in the thermal expansion of two different metals
	b. Fusion of two metals at a certain temperature
	c. Capacitance at the junction of two metals
	d. Electrtical resistance at the junction of two metals
	e. Inductance of a bimetal coil

Question 99

If we wish to have a very fast temperature sensor, we should be concerned with:

Choose one answer.

	a. The specific heat capacity of the materials used in constructing the sensor
	b. The rate at which the sensor output is sampled
	c. The mass of the sensor
	d. The thermal conductivity of the sensor
	e. All of the above

Question 100

The temperature of the healthy human body in degrees C is ____.

Choose one answer.

	a. 98.6
	b. 32
	c. 40
	d. 100
	e. 37