Ultimate Engineering Study Guide - Questions & Answers

refrigerant 134a enters a water-jacketed compressor operating at steady state at -10 c, 1.4 bar, with a mass flow rate of 22.2 kg/s, and exits at 50 c, 12 bar. the compressor power required is 792.9 kw. neglecting kinetic and potential energy effects, determine the magnitude of the rate of heat transfer to the cooling water circulating through the water jacket, in kw.
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technician a says large, low-speed industrial diesels require a high-quality and highly volatile fuel because they cannot tolerate excessive carbon deposits that result from low-volatile fuels. technician b says the small, high-speed diesel engines found in passenger cars are relatively unaffected by carbon deposits and can run on low-quality fuel. who is correct?
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a household iron has a stainless-steel sole plate that weights 3 lb and has a surface area of 0.5 ft2 . the iron is rated at 500 w. if the surroundings are at a temperature of 80 f, and the convective heat-transfer coefficient between the sole plate and surroundings is 3 btu/h ft2 f, how long will it take for the iron to reach 240 f after it is plugged in?
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1.19 for the design of their gliders in 1900 and 1901, the wright brothers used the lilienthal table given in figure 1.65 for their aerodynamic data. based on these data, they chose a design angle of attack of 3 degrees, and made all their calculations of size, weight, etc., based on this design angle of attack. why do you think they chose three degrees?
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Create a program inrange.py that has a function that takes one integer argument. The function will print a list of all values between 3000 and 5000 that is divisible by: the integer argument the integer argument + 7 the integer argument ^ 2For example, if the integer argument is 6, it should print:[3276, 3744, 4212, 4680]
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Which type of warehouse provides outsourced warehousing services?
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compare the unsigned integer type vs the signed 2's complement integer type. assuming that the number of bits is the same for both types, select all statements below that are true. group of answer choices unsigned integers can represent a larger value than signed integers. signed integers have a smaller minimum value than unsigned integers. signed integers can represent more values than unsigned integers. unsigned integers take less memory than signed integers.
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Problem Description and Given Info You must write a program that take as in input, a String containing the information for a course. This course information will always be a String formatted like this: Here is an example: CSE 110 11178 Principles of Programming Note that the four pieces of information in this String are each separated by a single space character. You can safely assume (for this assignment) that the input to your program will always follow this format. Your program must collect and store this full course information in a single String variable. You should use the Scanner nextLine method to collect the input as a single String. Your program must then extract the four pieces of information and store each in separate variables. The subject and title must be stored in String variables. The course number and section number must be stored in int variables. Finally, you program must print out the four pieces of information on separate lines, as show in the examples below. Here are some examples of what the user should see when the program runs. Example 1 Enter course info : CSE 110 11178 Principles of Programming Subject : CSE Course Number : 110 Section Number : 11178 Course Title : Principles of Programming Example 2 Enter course info : FSE 100 12187 Introduction to Engineering 21 ty
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What impact does this new technology have on outage reporting and response time? What are the two apps that are being used by the utilities department? How could this technology approach be used in other settings
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given the transfer function , evaluate settling time and rise time for the following values of : 1,2,3,4. also, plot the poles.
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Problem 3 The exothermic reaction of stillbene (A) to form the economically important trospophene (B) and methane (C), i. E. , A B+C was carried out adiabatically and the following data recorded: X 0 0. 2 0. 4 0. 45 0. 5 0. 6 0. 8 0. 9 -ra (mol/dm3-min) 1. 0 1. 67 5. 0 5. 0 5. 0 5. 0 1. 25 0. 91 The entering molar flow rate of A was 300 mol/min. Answer and draw the Levenspiel plots for the followings. (a) What are the PFR and CSTR volumes necessary to achieve 40% conversion? (VPFR 72 dm3, VCSTR = 24 dm3) (b) Over what range of conversions would the CSTR and PFR reactor volumes be identical? (c) What is the maximum conversion that can be achieved in a 105-dm3 CSTR?(d) What conversion can be achieved if a 72-dm3 PFR is followed in series by a 24-dm CSTR? (e) What conversion can be achieved if a 24-dm3 CSTR is followed in a series by a 72-dm PFR?
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A coder F, used to record in digital form the rotation of shaft A, is connected to the shaft by means of the gear train shown, which consists of four gears and three solid steel shafts each of diameter d. Two of the gears have a radius r and the other two a radius nr. The rotation of the coder F is prevented. Determine the angle through which end A rotates when T = 5.2 lbin., l = 2.4 in., d = 1/16 in., G= 11.2 106 psi, and n = 2
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What are the advantages of 2022 Sentra's available 7-inch Advanced Drive-Assist Display?- Provides easy recognition of vehicle information and warnings- Customizable color display- Quick reaction
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At cruising speed, 2022 Sentra's Xtronic CVT with D-step tuning can immediately change ratios for ________.A) During rapid acceleration, the transmission simulates shifts at higher rpmB) The steering wheel is easy to turnC) Quick acceleration, such as when passing another vehicle
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What should you point out when demonstrating 2022 Sentra's confident handling?-Quick response to steering input-Vehicle stays level when cornering-Tires provide a confident grip-both off all answer
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What is the effect of D-step tuning on 2022 Sentra's Xtronic CVT?A) During rapid acceleration, the transmission simulates shifts at higher rpmB) The steering wheel is easy to turnC) Quick acceleration, such as when passing another vehicle
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The allowable shearing stress is 15 ksi In the 1.5-in.-diameter steel rod AB and 7.6 ksi In the 1.8-in.-diameter brass rod BC. Neglecting the effect of stress concentrations, determine the largest torque T that can be applied at A. (Round the final answer to two decimal places.) Steel The largest torque T that can be applied at As k ip-in.
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An object weighs 75 N when submerged in oil (S 100 N is required to hold it submerged in mercury. Determine a. Weight of the object, in N. B. Volume of the object, in m3 c. Specific gravity of the object 0. 80) and a force of
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A smooth 3-in. -diameter hole is punched into the side of a large chamber where oxygenis stored at 500R and 150 psia. Assume frictionless flow. (a) Compute the initial mass flow rate from the chamber if the surrounding pressure is15. 0 psia. (b) What is the flow rate if the pressure of the surroundings is lowered to zero?(c) What is the flow rate if the chamber pressure is raised to 300 psia?Answers:(a) 26. 5 lbm/sec; (b) no change; (c) 53. 0 lbm/sec
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Show that if n is an integer and n3 + 5 is odd, then n is even using a proof by contraposition. State the contrapositive statement Proof proper
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Decision VariablesParameters/DataThe Objective Function (in English words)The Constraints (in English words)Design Situation AA contractor can sell several classes of concrete at a different price per-ton for each class. The materials specification for each class of concrete allows the percentage by weight of cement, sand, and gravel to range between certain upper and lower bounds. The contractor knows the unit cost (cost per-pound) to the company for each of the three components of concrete, and how much of each component that is available for the company to purchase. The amount of concrete of each type that the contractor can sell is limited but known. (Hint: This problem has a maximization objective function, not minimization.)
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The springs BA and BC each have a stiffness of 500 N/m and an unstretched length of 3 m. Determine the displacement d of the cord from the wall when a force F=175N is applied to the cord
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A certain article is manufactured in batches of 100. The direct material cost is 250,direct labour cost rs. 400 and factory overheads rs. 290. If the selling on cost is 40% of prime cost, what should be the selling price of each product to obtain a profit of 20%(i. E profit is 20% of the selling price)
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A hot coffee cup is placed in a cold room. Which of the following statements is true? 1. Heat will transfer from the coffee to the room because the coffee has a higher temperature. II. Internal energy will transfer from the coffee to the room because the coffee has a greater internal energy. III. The coffee and the room are in thermal equilibrium Choose one answer O II III I and III
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