Engineering, 02.04.2020 16:24 sebcbal
A 5.7 L four-stroke V-8 is being tested at wide open throttle at 4000 RPM in standard conditions. The volumetric air flow rate is measured as 10.7 m3/min. Assuming the ambient air density is 1.2 kg/m3, the volumetric efficiency is:a. 0.88b. 0.92c. 0.90d. 0.94
Answers: 2
Engineering, 04.07.2019 18:10
Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?
Answers: 1
Engineering, 04.07.2019 18:10
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 04.07.2019 18:10
Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.
Answers: 2
Engineering, 04.07.2019 18:10
Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
Answers: 2
A 5.7 L four-stroke V-8 is being tested at wide open throttle at 4000 RPM in standard conditions. Th...
Computers and Technology, 09.11.2020 23:00
English, 09.11.2020 23:00
Arts, 09.11.2020 23:00
Geography, 09.11.2020 23:00
Mathematics, 09.11.2020 23:00
Mathematics, 09.11.2020 23:00
Mathematics, 09.11.2020 23:00
Mathematics, 09.11.2020 23:00
History, 09.11.2020 23:00
Biology, 09.11.2020 23:00
Mathematics, 09.11.2020 23:00
Mathematics, 09.11.2020 23:00
Biology, 09.11.2020 23:00