Free Engineering Practice Questions - Improve Your Skills

Which is the best description of power? A. the amount of kinetic energy lost during motion B. a measure of how fast an object can travel C. the amount of energy transfer during motion D. a measure of how fast a machine performs work
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Which statement about fluid power systems is true? A. Fluid power systems do not need any form of lubrication B. Fluid power systems can only transmit forces over short distances.C Fluid power systems can only transmit forces in one directionD. Fluid power systems can transmit forces over long distances.
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12. According to the zeroth law of thermodynamics, which of the following cannot occur? A room being heated by an air conditioner. A temperature below the coldest item in an area. A cooler full of ice chilling a soda sitting on top of it.
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Please help i really don't understand.A farmer has a field at the front of his farm in which he has reared cattle for a number of years. He wants to make it into a more aesthetically pleasing area which can also earn income without blocking his view of the roadway passing in front of hs property. What advice would you give him?
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why you so mean to me? leave my questions please. answer them
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Which statement describes a possible limitation on a experimental design? A. Collecting samples to analyze is expensive B. The experiment has a very simple procedure C. The subject of the experiment has been studied by other scientist's D. There is a large number of constants
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What are the 5 different components of the four-stroke engine?
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How can historical design elements be added to modern building plans?
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5. When thinking about cleaning and maintaining tools, the primary goal is
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Suggest how the following requirements might be rewritten in aquantitative way:a. The library system shall be easy-to-use.b. The library system shall provide reliable service to all classes ofuser.c. The library system shall provide a rapid response to all userrequests for book information.
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which among the four that doesn't use an elbow in wiring installation a.EMT b. CPC c.PVC d.RSC
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what is the foundation
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write any four factors that may hamper the unity in diversity feature of Nepal and the Nepalese .
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Click this link to view O*NETs Work Activities section for Graphic Designers. Note that common activities are listed toward the top, and less common activities are listed toward the bottom. According to O*NET, what are common work activities performed by Graphic Designers? Check all that apply. assisting and caring for others performing general physical activities interacting with computers maintaining mechanical equipment thinking creatively getting information
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NatGas Corporation obtains a federal license to operate a gas pipeline through a certain area of Oregon. The Oregon state legislature enacts a law that bans gas pipelines in that area. Most likely, the state law violates:________ a. the due process clause. b. the supremacy clause. c. the U.S. Constitution. d. the commerce clause.
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A watershed near Van Horn, Texas, has an area of 5500 acres. Land cover throughout the watershed is fair condition desert shrub dominated by saltbrush and greasewood. Hydrologic soil groups in the watershed are approximately 60% C and 40% D. Topography in the watershed includes high hills along the upper watershed boundary draining into wide, flat floodplains. Because of this changing topography, water flowing from the most hydraulically remote point of the watershed to the outlet passes through two distinct sections. The first section has a length of 1200 ft with an average slope of 4%. The second section has a length of 3200 ft and an average slope of 0.8%. Required:Using the SCS Method, estimate the peak runoff rate, q, for a 25-year storm. You may assume no ponding occurs in the watershed.
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A tank with it's insulation not fully in tact has a volume of 0.07 cubic meters. Initially the tank contains 0.02 kg of helium at 105 kPa. The tank is filled with helium from a supply line at 1000 kPa and 50 Celsius. The filling process ends when the pressure of helium in the tank reaches the supply line pressure, at which time the temperature of the helium in the tank is 430 K. Determine the following: a. Initial temperature of the helium in the tank. b. The amount of mass added to the tank. c. The change in energy inside the tank. d. The heat loss from the tank a.
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A tension member must be designed for a service dead load of 18 kips and a service live load of 2 kips. Required:a. If load and resistance factor design is used, determine the maximum factored load (required strength) and the controlling AISC load combination. b. If allowable strength design is used, determine the maximum load (required strength) and the controlling AISC load combination.
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Suppose you want to build a digital logic project using only NAND gates. The output of each NAND gate will be connected to the inputs of one or more other NAND gates. Assume that the logic chips you are using have the following characteristics. Compute the DC noise margin and the largest fanout (number of gate inputs connected to a single output) that you can achieve while still maintaining the stated DC noise margin.VCC= 4.5V VOH= 4.0 V VOL= 0.5V VIH= 2.4V VIL=2.1VVTH= (VOH- VOL)/2 IOH= -10A IOL= 10A IIH= 1A IIL= -1ACalculate the following values: a. Noise margin for HIGH (Volts): b. Noise margin for LOW (Volts): c. Noise margin overall (Volts):d. Practical Fanout for HIGH: e. Practical Fanout for LOW: f. Practical Fanout overall:
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A cylindrical bar of metal having a diameter of 20.3 mm and a length of 205 mm is deformed elastically in tension with a force of 46400 N. Given that the elastic modulus and Poisson's ratio of the metal are 66.9 GPa and 0.32, respectively, determine the following: (a) The amount by which this specimen will elongate in the direction of the applied stress. (b) The change in diameter of the specimen. Indicate an increase in diameter with a positive number and a decrease with a negative number.
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Which type of voltage do generators produce?Generators are essential components of electric power systems. They contain wire coils placed between the magnets. They produce a/n voltage when they spin between the poles of the magnetic field, or when magnets spin around them.
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Explain the skills a prototype engineer working in the aerospace industry would need to construct an exercise facility for a space station.
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3. A balanced load with an impedance of 52
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