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Unformatted text preview: 7. S'
ECE 3041 LAB //0 Name: A ”M Baal Summer 2006
Quiz #1 1. (2pts) Name two types of meters used to make electrical measurements in Labl L
SIMPSON mam. 2. (2pts) Consider the following circuit
a: i. Which resistors are in parallel? EA ‘ \ FZ‘l' TC 3 ii. Which resistors are in series? E Z + E 3 3. (4pts) Given R1=6.0kohm, R2=1.0kohm, R3=2.0kohm, V=6.0volts
i. Calculate the equivalent resistance of the circuit Rm: .2 til ii. Calculate the voltage across each resistor VR1= LlSVg VR2= 2V VR3ZL 4. (2pts) Consider the potentiometer below. For a given setting, come up with a possible
combination of resistance values R12 and R23 ' 1
R12: “3er
15Kohm 2
R23: gkﬂ
3 ECE 3041 LAB g/l 0 Summer 2006
Quiz #5 1. (4pts) Determine the time constant (I) and the break frequency (f0) for the following
circuit. R = 1.2KQ, C = 0.1 uF I: 2] L2 O\iZ—"1© l
C fozi—‘ﬁﬂév ’32 G, 3 2. (2pts) If a square wave is input into the circuit above (at break frequency), draw a
rough sketch of What the output wave would look like (you don’t need to specify voltage
nor time values, I’m only interested in the shape). 1 X m ,.,._4 3.‘ (4pts) Determine the time interval (At) corresponding to the phase shift between the
following two waveforms. Also calculate the phase shift in degrees. (1 ms/div)
r — T — Summer 2006
Quiz #6 ECE 3041 LAB 3/[0 Name: 2101 2&4: 1. (4pts) Determine dc gain (KL), inﬁnite frequency gain (KH), pole frequency, and zero
frequency of the following low pass shelving ﬁlter 100Hz lKHz IOKHz 100KHz 1MHz
0
—10
—20
—30
 —40
KL: 1: dB £10: [:5 Hz
KH= 3* dB f2: [0k Hz 03 1: L2) :1" I; 3. (3pts) Free (’35 f—Jl/W/ﬂ Summer 2006
Quiz #7 ECE 3041 LAB ll Name: OW»
”0 KM ? :1: C 1. (2 pts) What is the formula for Q factor (Theoretical)? waL
”75”“ 2. (2 pts) What is the formula for Q factor (Experimental)? E3 ———\ Sz 7%
3. (3 pts) In a RLC circuit composed of a re\sistance of IkQ, an inductor of lmH, and a
capacitor of 10nF, what will be the resonant frequency of this system? f0: 30‘ 33 Eilk 4. (2 pts) For the same RLC circuit in question 3, calculate the decay constant (or) O. = 3000;? CD ZL
5. (1 pt) If the output voltage of a RLC circuit is 5V at resonant frequency, how much
voltage is across the resistance? {V 3. (Extra Credit, 2 pts) In a real engineering design, What is typically the desired Q factor
(high or low)? Support your answer. ~  . . N ' M a ’ ,‘L’Wzb w/WL,
W) 1W 4.654% “84ny {MW u 144/0 72.? \ ”W J] 4—2 ECE 3041 LAB IO/ﬂ Name: ‘ i 4/? Summer 2006
Quiz #8 1. (3 pts) If a 4000026009 transformer is connected in the following way, what is the
resistance measured by the ohmmeter? (assume an ideal transformer) Ohmmeter s /C3049_Q R1
150
4 TRANSFORMER 2. (3 pts) Draw the dot in the appropriate side. Given that after the switch is turned on we
see a negative voltage ﬂuctuation in the voltmeter. TCLOSE=0 T1
1 2 1 v1 U1
12Vdc ’_ .
 4 TRANSFORMER Voltmeter 3. (3 pts) What is the voltage measured by the voltmeter in the circuit below? Voltmeter TRANSFORMER
N1=10,000 turns
N2=1,000 turns 4. (1 pt) Give an example of were we use transformers in our daily life. ECE 3041 LAB 340 Name: K MK gmﬁm Summer 2006
Quiz #9 l. (4 pts) Identify the third and fifth harmonic for the following spectral representation of
a signal with frequency lKHZ 3. (2 pts) What aspects of lab this semester did you ﬁnd helpful? %( 7?? /¢ 4. (2 pts) What aspects of lab this semester could be improved upon? ﬂdﬁa MW mgwwbrW ...
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 Fall '07
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