. Each question is repeated for clarity and some general commentary concerningthe results of each is given. Page 11.22.3Q-2 How many years have you been attending Northeastern University? Q-2 TOTAL Average 3.84375 Median 3 Maximum 12 Minimum 0 EET Average 4.025 Median 3 Maximum 12 Minimum 0.25 MET Average 4.543478
Page 11.748.7 f0 1 L Selectivity Factor ? Q ? ? B R CThe quantity B is the 3-dB bandwidth.Assume that the circuit is initially relaxed and excited at t ? 0 at the resonant frequency by aninput sinusoid of the form vi (t ) ? Vi sin 2r f 0tBy either Laplace transform analysis or by solving the differential equation, the voltage vo (t )across the output resistor can be determined as Vi e /r Bt vo (t ) ? Vi sin 2r f 0t / sin 2r f 0 Ç 1 / (1/ 2Q) 2 t
transmitter section Page 11.41.3digitizes an analog input signal into 8-bit parallel values. For BPSK modulation, these values Fig. 2. Data Recovery Circuit Boardare multiplexed into a single output stream. For QPSK modulation, the values are multiplexedinto parallel I and Q output streams of even and odd bits.The receiver section performs the reverse operation. A phase locked loop extracts a clock fromthe incoming digital bit stream(s). For BPSK, a single incoming bit stream is converted to8-bit parallel values. For QPSK, two bit streams are first recombined into a single stream andthen parallelized. The parallel
. Page 11.395.4The other equation that are used in this VI are equations to calculate the RMS values of voltageand current, the maximum value of current from voltage and impedance information, and the realpower (P), reactive power (Q), and total power (S). Vm Im V m ∠θ vV = ...... I = ......I m = ............(6) 2 2 Z∠θ zP = V I cos θ .........Q = V I sin θ .............S = P + jQ................(7)θ = θ v − θ i ....................................................................(8)The front panel of this VI consists of (a) the user inputs (controls) such as maximum voltage,angle of the voltage, impedance, angle of the
Final Examination Question Number Avg. Max.Obj. Learning Objective Method Q-1 Q-2 Q-3 Q-4 Q-5 Q-6 10 Perform kinematic analysis of particle FinalO1 motion for rectilinear and curvilinear motion Exam. 6.79 7.23 7.01 Calculate the position, velocity andO2 acceleration at an instant given the expressions for the displacement 6.79 7.23 7.01 Draw motion diagrams and solve kinematicO3 problems
theprojectile. Typically the comparator was set to switch at approximately 2.5 volts. The output ofthe analog comparator is open collector; this open collector output is connected to the +5voltsupply through a 10k ohm resistor. The output of the first analog comparator is used as a startsignal for the counter. The first sensor pair executes the start, and the second pair executes thestop. This start / stop is accomplished by the use of a J-K flip-flop. The start sensor wasconnected to the J input of the flip-flop and the stop sensor was connected to the K input. Whenthe start sensor was triggered high it sends the J input high and sets the flip-flop output 'Q' to alogic high. When the flip-flop's output is high the 1 MHz clock signal is then passed
software of the profile of a two dimensional plate cam. Figure 1 P r o b l e m 3 -4 6 s u m X --> A (8 . 8 4 ) + C ( 3 . 7 5 ) + B ( 1 3 ) = 2 5 . 5 9 s u m Y --> A ( 8 . 8 4 ) + C ( -6 . 5 ) + B (-7 . 5 ) = -5 . 1 6 R = s q r t (2 5 . 5 9 ^ 2 + 5 . 1 6 ^ 2 ) = 2 6 . 1 t h e t a = i n v t a n ( -5 . 1 6 / 2 5 . 5 9 ) = -1 1 . 4 d e g Page 11.1334.4 Figure 2
students carefully explained the refrigeration cycle from athermodynamic point of view. They also describe the cycle using the first law ofthermodynamics. They provided T-s diagrams for the real and ideal cycles and identifiedopportunities for efficiency improvements based on the Carnot Cycle. The group alsopresented the appropriate metric, COPrefrigeration for a household refrigerator as shownbelow: Q% evaporator COPREFRIGERATION ? W% electric _ motorWhere,Q% evaporator = Evaporator load, kWW% = Electric motor load, kW electric _ motorExperimental Design: The students outlined in detail all the necessary steps to measurethe proposed metric. The outlined steps
the student presentations, instructors worked with each student group to adjust andfinalize the project scope and schedule. With refined goals and objectives, as well as scope ofwork and a schedule, the projects went on at full speed.The second checkpoint was a final presentation of the project, which accounted for 30% of theproject grade. The presentation was group-based, fifteen minutes long, and was followed by tenminute Q&A. It was required that the final presentations should involve external audiences,including project sponsors, other interested faculty members and students. The presentationswere video-taped and archived as a reference for future learning activities. The presentationswere graded by the self-performance of each
F re q u e n c y - H z P has e R es pons e 0 Angle of Av = Vo/Vi in Radians -0 . 5 -1 -1 . 5 0 1 2 3 10 10 10 10 F re q u e n c y - H z Figure 6. Amplitude and Phase Responses of a Low-Pass FilterExample 3. A