YOUR TEST IS VERSION 2
Mccill University CHEE 291 - brstrumentation MeasurementsLaboratory Fall2008 - Midterm 1 Name ID
YOURTESTIS VERSION2
MULTIPLE CHOICE. 25 Questions eachworth one point Answer on the Multiple Choice Exam Scanner. Enter your Student ID number and version number on the left hand side.
1) The strength of a linear association is described by A) the explanatory variable. B) the slope. C) a response variable. D) the y-intercept. correlation. @*"
12V
16( )
Figure7.1 2) ln the abovefig,r*, what is the total resistanceRT? A) 6.4 O B)4.8O
c) 2.4O
@a.zo
3) In the above figure, what is the current through the 3C)resistor?
A) 0.33A
@ 1.33A
c) 1.0A
D) 2.0A
4) kr the above figure, what is the vo Itage dropped acrossthe 12 ohm resistor? A) 3 volts C) 0.L2volts @ 12 volts
D) 1.2volts
5) In the abovefigure, what power is dissipatedacrossthe 15 ohm resistor? B) 0.9watts C) 12watts @ I *unr
D) 90 watts
6) Find the standard deviation of 24.5, 23.2, 39.1, 33.0,78.9,19.5
c) 36.0
@l8.03
A) Me3.8
D) 4171.2
10K()
rcKa
10K0
Figure 19-2 7) If the inputs are-7.'1.V and 12 V in Figure 19*2(a),what is the output voltage? B) -19.1V c) 1e.1v @-+.rv
D) 4.eV
8) If the two input voltages are9.2V and 0.7V in Figure 19-2(a),what is the output voltage?_
A) e.ev
B)-s.5v
c) 8.5v
@ -e.ov
9) What changecausesthe circuit in Figure 19-2@)to ou@ut the averageof the threeinput voltages? A) Changethe input resistorsto 3.3kO, @ Chang* the feedbackresistorto 3.3kO. C) Changethe feedbackresistorto 10kO. D) Changeto a different type of op-amp. 10) If the inputs are 4.1V, -0.7 V and 3.1V in Figure 19-Zb), the output voltage equals
(S -13v
B)13v
D)6,sv
c) -6.sv
11) If the inputs are 8.4 V and 1.2 V in Figure 79-2(a), the output voltage equals
A) 10.osv
B)7.2V
'
@
-s.6v
12) Find the z-scores for which 90o/o of the distribution's area lies between -z and z. A) (-1.96,1..96) c) (-2.33,2.33) {-t.e+s,teas)
@
13) The sum of the seriesIR drops around a closedloop must: A) Equal 120volts C) Equal infinfty
Dle.6V
D) (-0.e9,0.99) 7: x- M .f
B) Bethesame @)qual
the apptied voltage
14) Displacementtransducersmake useof which of the following? A) capacitance B)light C) magnetism
@*t
of the above
15) A scatterplot is sketchedusing the data given. Determine whether there is a positive linear correlation, negative linear correlation,or no linear correlation.
x
l-sl-31 4 I 1 | -11-21 0 | 2 | 3 l-4
v 111
,3 1 -2 | l tst-s
A) positive linear correlation
617
B) negative linear correlation
O "o
Unearcorrelation
16) The data below are the temperatures on randomly chosen days during a summer class and the number of absenceson *rose days. Find the equation of the regression line for the given data.
A)y =0.449x+30.27
B)y =30.27x-0.449
C )Y = 34.27x+ 0.M9
6;
=o.*,ex-so.zz
17)Comparedwithadigitalscalethatgivesreadingsas--.--E,ascalethatgivesreadingsas--.---gis A) not necessarily more precise or more accurate. C) more precise and more accurate.
precise, but not necessarily more accurate. @*ot" D) more accurate, but not necessarily more precise.
18) One method of providing an accuratethermocoupleinterfaceis: A) to use a swamping resistor. to use a referencethermocouple. @ C) to use a referencevoltagein the feedbackcircuit. D) capacitivecoupling. 19) Aszume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $34,000 and a standard deviation of $2000. What is the cutoff salary for teachers in the boftom 10olo?
A) $37,290
B) $36,S00
c) $30,710
$37,4N
20) The distribution of room and board expensesper year at a four-year collegeis normally distributed with a mean of $5850and standarddeviation of $1125.Randomsamplesof size20 are drawn from this population and the mean of eachsampleis determined. Which of the following mean expenseswould be considered unusual? A) $6180 B)$63s0 D) none of these ssrao
@
21) A tire comPany finds the lifespan for one brand of its tires is normally distributed with a mean of 47,500 miles and a standard deviation of 3000 miles. If the manufacturer is willing to replace no more than 10% of the tires, what should be the approximate number of miles for a warranty?
0 +s,ooo
B)s2,43s
c) 42,565
D) 5L,340
22) [r statistical language,a scoopof water drawn from a fish tank full of tropical saltr,vaterfish to detennine the
exactsaltcontentof thewateris a A) population. C) populationdishibution.
@ sample. D) parameter.
23)Whatistheresistanceofacircuitifavoltagedrangefrom5Vto12Vdrangesthecurrentfrom2Ato4A?
A,) 6 c J
@so
c)12o
D) 2 o
24) Using the percentageapproximations for the nonnal curve, the percentageof scoresbetween the mean and one standard deviation below the mean is B) 5070. C) 1.4o/". D)6ovo.
@uu-
25) The defomration of a material due to force acting on it is called: B) stress. C) pressure.
D) compression.
(5pointa)
QPegtion2-
Explain the seebeck effect
--fl
I t\.a_
s
YOURTESTIS VERSION2
MULTIPLE CHOICE. 25 Questions eachworth one point Answer on the Multiple Choice Exam Scanner. Enter your Student ID number and version number on the left hand side.
1) The strength of a linear association is described by A) the explanatory variable. B) the slope. C) a response variable. D) the y-intercept. correlation. @*"
12V
16( )
Figure7.1 2) ln the abovefig,r*, what is the total resistanceRT? A) 6.4 O B)4.8O
c) 2.4O
@a.zo
3) In the above figure, what is the current through the 3C)resistor?
A) 0.33A
@ 1.33A
c) 1.0A
D) 2.0A
4) kr the above figure, what is the vo Itage dropped acrossthe 12 ohm resistor? A) 3 volts C) 0.L2volts @ 12 volts
D) 1.2volts
5) In the abovefigure, what power is dissipatedacrossthe 15 ohm resistor? B) 0.9watts C) 12watts @ I *unr
D) 90 watts
6) Find the standard deviation of 24.5, 23.2, 39.1, 33.0,78.9,19.5
c) 36.0
@l8.03
A) Me3.8
D) 4171.2
10K()
rcKa
10K0
Figure 19-2 7) If the inputs are-7.'1.V and 12 V in Figure 19*2(a),what is the output voltage? B) -19.1V c) 1e.1v @-+.rv
D) 4.eV
8) If the two input voltages are9.2V and 0.7V in Figure 19-2(a),what is the output voltage?_
A) e.ev
B)-s.5v
c) 8.5v
@ -e.ov
9) What changecausesthe circuit in Figure 19-2@)to ou@ut the averageof the threeinput voltages? A) Changethe input resistorsto 3.3kO, @ Chang* the feedbackresistorto 3.3kO. C) Changethe feedbackresistorto 10kO. D) Changeto a different type of op-amp. 10) If the inputs are 4.1V, -0.7 V and 3.1V in Figure 19-Zb), the output voltage equals
(S -13v
B)13v
D)6,sv
c) -6.sv
11) If the inputs are 8.4 V and 1.2 V in Figure 79-2(a), the output voltage equals
A) 10.osv
B)7.2V
'
@
-s.6v
12) Find the z-scores for which 90o/o of the distribution's area lies between -z and z. A) (-1.96,1..96) c) (-2.33,2.33) {-t.e+s,teas)
@
13) The sum of the seriesIR drops around a closedloop must: A) Equal 120volts C) Equal infinfty
Dle.6V
D) (-0.e9,0.99) 7: x- M .f
B) Bethesame @)qual
the apptied voltage
14) Displacementtransducersmake useof which of the following? A) capacitance B)light C) magnetism
@*t
of the above
15) A scatterplot is sketchedusing the data given. Determine whether there is a positive linear correlation, negative linear correlation,or no linear correlation.
x
l-sl-31 4 I 1 | -11-21 0 | 2 | 3 l-4
v 111
,3 1 -2 | l tst-s
A) positive linear correlation
617
B) negative linear correlation
O "o
Unearcorrelation
16) The data below are the temperatures on randomly chosen days during a summer class and the number of absenceson *rose days. Find the equation of the regression line for the given data.
A)y =0.449x+30.27
B)y =30.27x-0.449
C )Y = 34.27x+ 0.M9
6;
=o.*,ex-so.zz
17)Comparedwithadigitalscalethatgivesreadingsas--.--E,ascalethatgivesreadingsas--.---gis A) not necessarily more precise or more accurate. C) more precise and more accurate.
precise, but not necessarily more accurate. @*ot" D) more accurate, but not necessarily more precise.
18) One method of providing an accuratethermocoupleinterfaceis: A) to use a swamping resistor. to use a referencethermocouple. @ C) to use a referencevoltagein the feedbackcircuit. D) capacitivecoupling. 19) Aszume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $34,000 and a standard deviation of $2000. What is the cutoff salary for teachers in the boftom 10olo?
A) $37,290
B) $36,S00
c) $30,710
$37,4N
20) The distribution of room and board expensesper year at a four-year collegeis normally distributed with a mean of $5850and standarddeviation of $1125.Randomsamplesof size20 are drawn from this population and the mean of eachsampleis determined. Which of the following mean expenseswould be considered unusual? A) $6180 B)$63s0 D) none of these ssrao
@
21) A tire comPany finds the lifespan for one brand of its tires is normally distributed with a mean of 47,500 miles and a standard deviation of 3000 miles. If the manufacturer is willing to replace no more than 10% of the tires, what should be the approximate number of miles for a warranty?
0 +s,ooo
B)s2,43s
c) 42,565
D) 5L,340
22) [r statistical language,a scoopof water drawn from a fish tank full of tropical saltr,vaterfish to detennine the
exactsaltcontentof thewateris a A) population. C) populationdishibution.
@ sample. D) parameter.
23)Whatistheresistanceofacircuitifavoltagedrangefrom5Vto12Vdrangesthecurrentfrom2Ato4A?
A,) 6 c J
@so
c)12o
D) 2 o
24) Using the percentageapproximations for the nonnal curve, the percentageof scoresbetween the mean and one standard deviation below the mean is B) 5070. C) 1.4o/". D)6ovo.
@uu-
25) The defomration of a material due to force acting on it is called: B) stress. C) pressure.
D) compression.
(5pointa)
QPegtion2-
Explain the seebeck effect
--fl
I t\.a_
s
