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Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
- Water flowing through a pipe at a rate of 70 liter/sec having diameters 600 mm and 400 mm at the bottom and upper end respectively. The intensity of pressure at the bottom end is 4 bar and the pressure at upper end is 1.2 bar. Determine the distance of upper end of the pipe from datum line if the lower end is 120 cm above the datum line.arrow_forwardDiscuss the validity of the conservation of energy in terms of potential (gravitational or elastic) and kinetic energy by giving at least one real-life application?arrow_forwardWhat type of differential equation is the clapeyron-Clausius equation ?arrow_forward
- Substances with higher specific heats will increase in temperature faster than substances with lower specific heats, when exposed to the same amt of energy. True or Falsearrow_forwardA gas undergoes isobaric expansion at 0.05 bar from 0.1 m 3 to 1.0m 3 when 2.0 KiloJoules of heat is applied to it. Which of the following is true regarding the work, heat and the change in internal energy involved in this change (all quantities in KiloJoules)? A. +4.5; -2.0; +2.5 B. +4.5; +2.0; +6.5 C. -4.5; -2.0; -6.5 D. -4.5; +2.0; -2.5arrow_forward1. The mean effective pressure of an engine running at 300 rpm is 500 kPa. What is the indicatedpower if the engine has bore of 250 mm x 450 mm. Select the correct answer below: A. 110.5 kW B. 150 kW C. 200 kW D. 182. 2 kW 2. In a certain process, entering is 1500 KJ/kg and 150 m/s. If the energy leaving is 12000 Kj/kg/ Determine the velocity at exit. Select the correct answer below: A.) 145 m/s B. 1020 m/s C. 789 m/s D. 978 m/sarrow_forward
- Determine the heat and the work of the polytropic expansion of steam from 2.8 MPa at 300 degrees celcius to 0.76 MPa at 200 degrees celciusarrow_forwardConclusions The Stefan-Boltzmann Lawarrow_forward5. Steam is held in two compartments separated by a membrane. The total volume is 777 ft3, and the volume ofcompartment B is 280 ft3. The specific volume of the steam in B is 9.5 ft3/lbm. The membrane breaks and theresulting specific volume is 12.75 ft3/lbm. Determine the original specific volume in compartment A in ft3/lbm.arrow_forward
- Determine how long an energy storage device can be used when it is known that for this type of system the output power is a polynomial function of time, (Power) = a0 - bt2, where a0 = 2.5(105) W and b = 1.24(10-3) W/s2 are known constants and t is the time in seconds. The initial energy stored in the device at the start of this process is 8.1(108) J and the device is completely discharged at the end of the processarrow_forwardThe property that changes when the explosions within an internal combustion engine are converted to ultimately move the car is _______arrow_forwardA gas undergoes isobaric expansion at 0.05 bar from 0.1 m³ to 1.0 m³ when 2.0 KiloJoules of heat is applied to it. Which of the following is true regarding the work, heat and the change in internal energy involed in this change (all quantities in KiloJoules)? A. +4.5, -2.0, +2.5 B. -4.5, +2.0, -2.5 C. +4.5, +2.0, +6.5 D. -4.5, -2.0, -6.5arrow_forward
- Principles of Heat Transfer (Activate Learning wi...Mechanical EngineeringISBN:9781305387102Author:Kreith, Frank; Manglik, Raj M.Publisher:Cengage Learning