Engineering

The solid homogeneous cylinder is released from rest on the ramp. If = 40 , s= 0.30 and k= 0.20. Determine the magnitudes of the acceleration of the mass (W= 8lb) center G and the friction force exerted by the ramp on the cylinder.
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In a typical transmission line, the current I is very small and the voltage V is very large. A unit length of line has resistance R. For a power line that supplies power to 10,000 households, we can conclude that:________
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You should continuously work to enhance your skills and knowledge .
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Summary of Possible Weather and Associated Aviation Impacts for Geographic/Topographic Categories Common in the Western United States. Geographic/Topographic Descriptive Summary of Potential Aviation ImpactsCategory of a Possible Weather That Could Impact Based on Weatherof Airport Location Aviation OperationsAlong the US West coast, with steep mountains to the east(An example of this category is Santa Barbara Airport, located on the Southern California Coast, at an elevation of 10 feet).Within a valley in elevated terrain surrounded by high mountains (An example of this category is Friedman Memorial Airport, located in Central Idaho, at an elevation of 5300 feet).In elevated terrain on the leeside of high mountains (An example of this category is Northern Colorado Regional Airport, located in northern Colorado, at an elevation of 5000 feet, on the leeside of the Rocky mountains).
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An ideal Diesel cycle has a compression ratio of 17 and a cutoff ratio of 1.3. Determine the maximum temperature of the air and the rate of heat addition to this cycle when it produces 140 kW of power and the state of the air at the beginning of the compression is 90 kPa and 578C. Use constant specific heats at room temperature.
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An air-conditioner which uses R-134a operates on the ideal vapor compression refrigeration cycle with a given compressor efficiency.--Given Values--Evaporator Temperature: T1 (C) = 9Condenser Temperature: T3 (C) = 39Mass flow rate of refrigerant: mdot (kg/s) = 0.027Compressor Efficiency: nc (%) = 90a) Determine the specific enthalpy (kJ/kg) at the compressor inlet. Your Answer =b) Determine the specific entropy (kJ/kg-K) at the compressor inlet Your Answer =c) Determine the specific enthalpy (kJ/kg) at the compressor exit Your Answer =d) Determine the specific enthalpy (kJ/kg) at the condenser exit. Your Answer =e) Determine the specific enthalpy (kJ/kg) at the evaporator inlet. Your Answer =f) Determine the coefficient of performance for the system. Your Answer =g) Determine the cooling capacity (kW) of the system. Your Answer =h) Determine the power input (kW)to the compressor. Your Answer =
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6. Driving with parking lights only (in place of headlights) is against the law. A. True B. False
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if you are a mechanical engineer answer these questions:1. Are communication skills (reading, writing, and speaking) necessary in this profession?2. How are Communicative Competences integrated into this profession?
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how many types of engineering specialist are there?
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1. In a mechanical design, it is recommended to use standard size/dimension to overcome uncertainties in stress or material strength.A. TrueB. False2. Steels' surface fatigue strength can be correlated to their Brinell hardnesses. A. TrueB. False3. If a material point has three principal stresses 01 = 02 = 03 = 300kpsi, then the maximum shear stress is Tmax = 150kpsi. A. TrueB. False4. The endurance limit of a material is independent on the size of a part. A. TrueB. False5. The tensile stress in a bolt is usually calculated through tensile force divided by area of unthreaded rod's cross-section area. A. TrueB. False6. Edge shear-out or tear-out is one failure mode in bolted or riveted joints. A. TrueB. False7. Pretension of bolts can be controlled by a torque wrench. A. TrueB. False8. The material ultimate tensile strength of a spring coil is dependent on its coil diameter. A. TrueB. False9. Adhesive joints are much stronger in tensile loading than shear loading.A. TrueB. False 10. The dominated loading condition in a helical spring is torsion along coils.A. TrueB. False11. The principal advantage of conical springs is that the its spring rate is non-linear.A. TrueB. False 12. The dimensions of a bearing is coded by two-digit series numbers according to ABMA, one digit for width and the other one for diameter. A. TrueB. False13. Three key things to determine selection of bearing are load, life and reliability. A. TrueB. False14. Straight roller bearings can carry large radial loads and small amount of axial load.A. TrueB. False 15. In the AGMA method of gear analysis, gear strength values are the true material strengths. A. TrueB. False16. A planetary gear train allows for two degrees of freedom.A. TrueB. False
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"The transistor base-emitter voltage (VBE) a. increases with an increase in temperature. b. is not affected by temperature change. c. decreases with an increase in temperature. d. has no effect on collector current."
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what is your favorite generation of the mustang?
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What's the resistance in a circuit that has a voltage of 60 V and a current of 2 A? A. 10 B. 60 C. 120 D. 30
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Your friend wears earbuds while driving to school each day. Is this safe? Is it legal? Explain why or why not.
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A power screw is 30 mm in diameter and has a thread pitch of 5 mm. Find the thread depth, the thread width, the mean and root diameters, and the lead, provided that square threads are used. Assume single threads.
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Steam enters an adiabatic turbine at 800 psia and9008F and leaves at a pressure of 40 psia. Determine themaximum amount of work that can be delivered by thisturbine.
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Write about traditional brick production in Pakistan
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A 4-pole, 3-phase induction motor operates from a supply whose frequency is 60 Hz. calculate: 1- the speed at which the magnetic field of the stator is rotating. 2- the speed of the rotor when the slip is 0.05. 3- the frequency of the rotor currents when the slip is 0.04. 4- the frequency of the rotor currents at standstill.
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Unless otherwise posted, the speed limit for cars in a residential area isA: 25 milesperhourB: 30 miles per hour.C: 35 miles per hour.
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A permanent-magnet dc motor has the following parameters: Ra = 0.3 and kE = kT = 0.5 in MKS units. For a torque of up to 10 Nm, plot its steady state torque-speed characteristics for the following values of Va: 100 V, 75 V, and 50 V.
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What is version control?
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__is a mechanical force generated by a solid object moving through a fluid.
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The ramp in the railway station has rough surface .why?
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A plate is supported by a ball-and-socket joint at A, a roller joint at B, and a cable at C. How many unknown support reactions are there in this problem?
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