Engineering, 12.02.2020 23:51 Chrisis9987
Suppose the message signal is a series of rectangular pulses m(t) where us is the unit ste function and suppose the carrier frequency is fc Then plot the waveform of the dsb sc am signal m(tO cos(2pift) and derive the fourier transform
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Engineering, 04.07.2019 03:10
What precautions should you take to prevent injuries when dealing with heavy loads?
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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?
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Engineering, 04.07.2019 18:10
What are the two (02) benefits, which may result from a successful implementation of preventive maintenance (pm) program in an organization? (clo3)a)- lean manufacturing b)-overlapping responsibilities c)-the planner is not qualified d)-accurate contractor information e)-reduction in equipment redundancies f)-accurate stores information
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Engineering, 04.07.2019 19:10
The proportional limit is always greater than the yield strength for a material. a)-trune b)- false
Answers: 3
Suppose the message signal is a series of rectangular pulses m(t) where us is the unit ste function...
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