Engineering, 24.03.2020 06:17 alliemeade1
You need to completelyunderstand the following terms and concepts to do well on Exam I. Each item will have at least on question about it. Some items will have many questions about it. Some items questions may involve more than one item. Neither calculators, nor pen/pencils with paper are allowed. Neither notes nor books are allowed. The exam will be proctored using PAL, 50 questions, time 60 minutes. All questions will be graded by the computer and be similar to the style of the quizzes1. Business analytics2. Reasons for failure of management science3. Decision variables4. Deterministic and probabilistic models5. Strategies to find the "best" solution5. Types of models6. Constraints7. Objective function8. Controllable and uncontrollable inputs
Answers: 2
Engineering, 04.07.2019 18:10
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
Engineering, 04.07.2019 18:10
Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)
Answers: 3
Engineering, 04.07.2019 18:20
Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.
Answers: 2
You need to completelyunderstand the following terms and concepts to do well on Exam I. Each item wi...
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