Concept explainers
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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- Fill in the Blanks: Type your answer in the space provided after each item. Type 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 specified after your answer. Leave a space between the value and the unit. (ex: 6323.17 m, 73.10 lb-in, 100 kN)arrow_forwardplease answer it in 1hr. PLEASE SHOW SOLUTION STEP BY STEP WITH UNITS. SUBJECT: THERMODYNAMICS, TOPIC: PROCESSES OF GASESarrow_forward(i) Give the correct number of significant figures for: 4500 0.0032 0.04050 (ii) Write in scientific notation and engineering notation: 0.000467 32000000arrow_forward
- Solve the following problems. Show your correct and complete solution for this problem. Box your final answers and express in two decimal places. Sketch the schematic diagrams. A steam throttling valve with inlet conditions of 2MPa and 400C is connected to the inlet of the turbine. The turbine has 200kW power output and heat abstracted of 100kW. If the mass flow rate is 1kg/s and the exit temperature of steam is 300C, find the exit turbine pressure.arrow_forwardPerform the indicated operations and express the results in simplest from j100+j200+j300arrow_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_forward
- 1-heat is defined as the average kinetic energy of the atoms and molecules that make up a substance and temperature is the amount of thermal energy transported2- heat is defined as the total kinetic energy of the atoms and molecules that make up a substance and temperature is the transport of pressure energy due to the temperature gradient3- Heat is defined as the average kinetic energy of the atoms and molecules that make up a substance and temperature is a measure of the equivalent kinetic energy of the individual molecules or atoms4- Heat is defined as the total kinetic energy of the atoms and molecules that make up a substance and temperature is a measure of the total kinetic energy of the individual molecules or atoms5- Heat is defined as the total kinetic energy of the atoms and molecules that make up a substance and temperature is a measure of the average kinetic energy of the individual molecules or atoms choose only one of the above alternatives as correctarrow_forward1) From 0 to 10 sec, find alphaA1, alphaC1 in rad/s^2, omegaA1(t), omegaC1(t) in rad/s, thetaA1(t), thetaB1(t) and thetaC1(t) in rad, and the distance made by the load s1 in inches and in feet made by the load during this time.arrow_forwardCompletely solve and box the final answer. Please show the units to show the unit cancellations. Write legibly 4. A total of 10,000 BTU have been rejected from the condenser in two minutes. If the cooling capacity is 120 gallons per minute of water, compute the temperature of cooling water that enters the cooling tower. The cooling water is supplied from the cooling tower at 120ºF. Use the standard density of water.arrow_forward
- Type your answer in the space provided after each item. Type 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, 12.90 mm^2, 120 lbs) There is no period after the unit.arrow_forwardCompletely solve and box the final answers. Write legibly 5. How much twisting moment in lbf-ft is required to drive the shaft of the motor coupled to a pump with a rotational speed of 2,000 rpm. The pump efficiency is 82.0% and can deliver 2,000 gallons per minute of cold water to a height of 200 feet.arrow_forwardShow stepsarrow_forward
- Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning