Engineering Quiz & Practice Tests - Test Your Skills

As opposed to countries in which a specific worldview strongly dominates, countries allowing cultural pluralism benefit from competition which results in more rapid social and technological evolution Obecome unproductive and distracted by strife over social issues O speed market growth but hamper technology development have higher than normal unemployment and economic stagnation
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Consider a combined gas-steam power plant. Water for the steam cycle is heated in a well-insulated heat exchanger by the exhaust gases of the gas turbine that enter at 800 K at a rate of 110 kg/s and leave at 380 K. Water enters the heat exchanger at 200?C and 8 MPa and leaves at 350?C and 8 MPa. If the exhaust gases from the gas turbine are treated as air with constant specific heats at room temperature, the mass flow rate of water through the heat exchanger is?
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You can write an algorithm to find the factorial of a non-negative integer using an iterative control structure.True or False?
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Consider a work consuming system operating not at steady-state with two mass inputs, two mass outputs, two heat inputs, and one heat output. a) Write out the full Energy Balance for this system in rate form? (2 pts] b) Write out the full Entropy Balance for this system in rate form?
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a 1.5 mhz clock signal is applied to an eight flip-flop binary counter. which of the following indicates the proper mod number, maximum number of counts, maximum count, and output frequency of the circuit?
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the array newvals will not contain any values because the code segment does not compile. {true, false, true, true} {false, true, false, false} {false, false, true, false} {true, true, false, true}
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perform the following binary subtraction. a. ( 100001 )2 b. ( 100010 )2 c. ( 100011 )2 d. ( 100100 )2 e. ( 100101 )2
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if the time set for trial for ignition (tfi) is exceeded, the ignition control module places the furnace in lockout.
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Sample A is 100, ml. of a clear liquid. The liquid is heated in a flask until it boils. The vapor that rises off the boiling liquid is collected for 10 minutes and cooled until it condenses into a separate beaker. The density of the liquid that remains in the flask is then measured, and turns out to be 1.04 g/ml. The density of the liquid that boiled off turns out to be 0.77 g/ml. Sample B is 100. g of a coarse grey powder with a faint unpleasant smell. 15. mg of the powder are put into a very thin tube and heated. The powder begins melting at 66.2 C. The temperature stays constant as the powder slowly melts. After the last of the powder melts, the temperature starts to rise again, eventually reaching 76.0 "C. Opure substance X ? Is sample A made from a pure substance or a mixture? If the description of the substance and the outcome of the experiment isn't enough to decide, choose "can't decide." mixture (can't decide) pure substance is sample B made from a pure substance or a mixture? If the description of the substance and the outcome of the experiment isn't enough to decide, choose "can't decide." mixture (can't decide)
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one method of creating an electromotive force is by the action of certain acids on dissimilar metals, as found in the storage battery. t/f
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If each of the three links of the mechanism has a weight of 20lb, determine the angle for equilibrium of the spring, which, due to the roller guide, always remains horizontal and is unstretched when angle=0 Using energy formulation find angle for equilibrium. The answer should be 0, 36.9
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A class design requires that a particular member variable must be accessible by any subclasses of this class, but otherwise not by classes which are not members of the same package. What should be done to achieve this?Question 18 options:A) The variable should have no special access modifier.B) The variable should be marked protected.C) The variable should be marked private.D) The variable should be marked public.E) The variable should be marked private and an accessor method provided.
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A shell-and-tube heat exchanger is to heat 10,000 kg/h of water from 16 to 84degreeC by hot engine oil flowing through the shell. The oil makes a single shell pass, entering at 160degreeC and leaving at 94'C, with an average heat transfer coefficient of 400 W/m2/K. The water flows through 11 brass tubes of 22.9 mm inside diameter and 25.4 mm outside diameter, with each tube making four passes through the shell. Assuming fully developed flow determine the required tube length per pass. For the tube length found in part (1), plot the effectiveness, fluid outlet temperatures, and water-side convection coefficient as a function of water flow rate for 5000 15,000 kg/h, with all other conditions remaining the same.
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Diagram (Fig. 6) below shows the creep test of a 2.25Cr-1Mo Steel at temperature of 600C under test stress of 95 MPa. After checking the diagram, an engineer believes the strain change linearly at times between 400 and 800 hours. When use a 3 inch long rod made of this material, how long in inch will it be before it fractured under 95 MPa stress at 600C? 30 25 2 20 Creep strain, & (%) 15 10 5 ......... 0 200 400 600 800 1000 1200 1400 1600 1800 Time, t/h 01. 3.80 O II 3.25 O 13.00 O IV 3.08
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IN C++!!!!!! Compute greatest common divisor using recursion) The gcd(m, n) can also be defined recursively as follows: If m % n is 0, gcd (m, n) is n. Otherwise, gcd(m, n) is gcd(n, m % n). Write a recursive function to find the GCD. Write a test program that prompts the user to enter two integers and displays their GCD.
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For this assignment you will program a Sequence Logo calculator/display using the pyseqlogo module and the sequence conservation program we have been building during class. The program should take a multiple sequence alignment file of any size as input. The output of the program should be a file that computes the information content li per site i and also the heights for each of the RNA nucleotides in the sequence at position i. Recall that the heights (e.g. nucleotide A) are computed as: fi(A) Hi(A) = 1 15 (1) Ne{A,C,U,G) fi(N) These values are saved in the file using the same format as shown in class. For this program you can use the program that calculates information and heights discussed in class or you can use your own program. You will then have to modify this program and use pyseqlogo code to display the sequence Logo (you can use the sample in class as a template) computed with the sequence alignment file. The requirements are the following: You need to compute logo letter heights and use them as input in pyseqlogo For all the columns in the alignment create an input list with the correct format to be used in pyseqlogo Display the Logo including axes and select Bits as the Y-axis Save an output file with the Information content and the letter heights for each alignment column.
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the sequence {fn} starts with an index of 0 and is defined so that fn is the smallest integer k such that k^2 >
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an npn bjt is made of a semiconductor with electron and hole mobility of 1000 and 500 cm2/vs, and carrier lifetime of 1 micro-second for both electrons and holes for all regions regardless of doping levels. if the doping concentration of the emitter is 10x that of the base, and effective base width is 4 microns, what is the emitter injection efficiency of the transistor?
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When you trace errors in a workbook, what types of cells does Excel identify? Select all the options that apply. a. independent cells on the current worksheet b. dependent cells on the current worksheet c. precedent cells on the current worksheet d. precedent cells on other worksheets
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Select from the choices below those that are network baseline statistics. (note select only the correct choices)Peak utilizationDMZ failuresData leakageRouter hopsAverage utilizationTotal collisions, runts, giantsCRC errorsMinimum utilization
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consider a system consisting of four resources of the same type that are shared by three threads, each of which needs at most two resources. show that the system is deadlock free.
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build the photo liker app, using your activity guide to help you plan. when you're done, submit your work.
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transition zone in concrete is * 1 point time where concrete gets converted from the wet form to the dry form cement particles taking part in hydration process the process in which concrete shrinks when allowed to dry in air at low relative humidity zone between aggregate and hydrated cement paste
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Prompt the user for a day of the week (e.g., Sunday, Monday, etc.) Display the dates for that day of the week for the next year (see examples below). Do not use any built-in date functions. Don't use anything that we haven't covered in this class. If you do, you will get a zero for the assignment. You can solve this just with lists and loops, etc. If your program is more than 50 lines, you're doing it wrong! (See hint at the bottom.) What to submit: - Your Python program (a .py file) (Only submit one program, not 7!) - Four screen shots of your program working with three different sets of inputs, showing various results. Three of these data sets must match those shown below; the other data set should be one you construct (i.e., you choose a different day of the week).
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