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For Problems15−28, perform the indicated conversion of units. (Refer to Appendix 16 for conversion factors.) Express the results with the appropriate prefix as illustrated in Tables1−3 and 1−4.
26. To compute the energy used by a motor, multiply the power that it draws by the time of operation. Consider a motor that draws 12.5 hp for 16 h/day, five days per week. Compute the energy used by the motor for one year. Express the result in
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- Convert 22C to Fahrenheit.arrow_forwardProvide a complete given and computation. Include all the decimals. Steam engine with incomplete expansion receives saturated steam at 1.04 Mpa, expands it to 0.105 Mpa where release occurs. Exhaust is to a condenser at 40C. The actual engine uses 6070 kg/h of steam; it has a brake engine efficiency of 60% and a mechanical efficiency of 85%. The electric generator which it drives has an efficiency of 92%. (a) the indicated work in kW, indicated thermal efficiency and indicated steam rate, (b) the combined thermal efficiency and the combined steam rate.arrow_forwardCompletely solve and box the final answer. Please show the units to show the unit cancellations. Write legibly 3. A power plant station has a turbine output of 70,000 KW. A dry and superheated steam is supplied to the turbine at 7,000 kpa and 700ºC. The steam was extracted from the turbine at 0.70 bar saturated pressure. Compute the over-all Rankine cycle efficiency (%).arrow_forward
- arrow_forwarduse the given information to answer the question. the horsepower (hp) that a shaft can safely transmit varies jointly with its speed (in revolutions per minute (rpm)) and the cube of the diameter. if the shaft of a certain material 3 inches in diameter can transmit 45 hp at 110 rpm, what must the diameter,d, be in order to transmit 65 hp at 150 rpm? (round your answer to two decimal places.) d= inchesarrow_forwardCompletely solve and box the final answer. Please show the units to show the unit cancellations. Write legibly 10 Compute the indicated mean effective pressure in bar of a four-stroke 8” x 12” single acting Diesel engine with 8 cylinders that deliver 800 Bhp at 800 rpm. The engine consumes 80 pounds for every half hour of fuel with a heating value of 18,000 BTU/lb. Use a mechanical efficiency of 80%.arrow_forwardType in your answer/s rounded off to 2 decimal places except for whole numbers. (ex: 10.67, 28, 732.40) If your answer is 120.00 kN, just write 120 kN Do not round off values during solving. Use the store function of your calculator or its fraction if applicable. Include the units after your answer. Leave a space between the value and the unit. (ex: 6323.17 m, 73.10 rad/s^2, 100 kN) For stresses, type (C) for compression and (T) for tension one space after the unit. (ex: 18.19 MPa (C), 6.88 psi (T))arrow_forwardCompletely solve and box the final answer. Please show the units to show the unit cancellations. Write legibly 2. During a steady flow process, the pressure of the working substance drops from 1,380 kpa to 138 kpa, the speed increases from 61 m/s to 305 m/s, the internal energy of the open system decreases 58.1 KJ/kg, and the specific volume increases from 0.0625 m3/kg to 0.5 m3/kg. No heat is transferred, determine the work in KW if the mass flow at the rate of 272.15 kg/hr.arrow_forwardAnswer the questions below, (Insert the numerical value only, do not use ,+, *, or /) The Relative error for your answer should be less than 0.01, which means if the answer was 50, then the error should not exceed 50*0.01= ±0.5! if the answer was 230, then the error should not exceed 230*0.01= +2 3! if the answer was 2.31467*10^ 3, then you should enter this value: 0.00231467, not this 0.0023 !!!! K2 K1 M1 fv1 M2 f(t) if M1=4, M2=3, fv1=7, K1=4, K2=6. Find the state equations for the translational mechanical system shown in Figure. [d/dt(r1) d/dt(v1) [(1.1) (1.2) (1.3) (1.4) rl (1)] (2.1) (2.2) (2.3) (2.4) (3.1) (3.2) (3.3) (3.4) [(4.1) (4.2) (4.3) (4.4)] vl * f(t)$$ $$ d/dt(r2) d/dt(v2) r2arrow_forwardThe volumes of states 1, 2 and 3 of a diesel cycle operating on an air standard are 300 cm3, 2 x 10- 5 m3 and 60 cm3, respectively. Find the power output if the heat input is 120 kW. **Express final answer to the NEAREST WHOLE NUMBER. Do not round off in between solution. Type only the "numerical value". No need to include the unit and percent sign.arrow_forwardmmetri Each part has a constant thickness with values indicated. 2.0 mm 1.5 mm 3.0 mm 2.0 mm A shear force, S₂ is applied. This results in shear flow, shown with red arrows, which has the following values: • Shear flow in part 13, just before point 3 - 38 N/mm Shear flow in part 23, just before point 3 = 44 N/mm Shear flow in part 43, just before point 3- 44 N/mm What is the shear stress in part 35, just below point 3? Express your answer in MPa, to 2 decimal places but without the units included. You have a 3% margin of error.arrow_forwardRepresent the following as a number between 0.1 and 1000 using an appropriate prefix:0.00563 mg.arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning