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0 [{"id":412377,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-03-21 21:06:57","updated_at":"2018-03-21 21:06:57","questionName":"How does the speed of sound in beer compared to the speed of sound in water. Approximate beer as a mixture of water and small air bubbles in which the bubbles occupy a fraction E of the volume of the mixture.","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"The speed of sound c=sqrt(kRT)=sqrt(K\/p). Although density p decreases, K decreases at a greater rate, so the speed descreases.","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":379165,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-02-14 14:59:55","updated_at":"2018-02-14 17:40:04","questionName":"In fully-developed laminar pipe flow, the streamwise pressure gradient dp\/dx...","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":0,"explanation":"dp\/dx is negative, and expressed in Pascals per meter. P depends on x","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":378504,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-02-13 19:10:01","updated_at":"2018-02-14 17:40:04","questionName":"When comparing fully developed-laminar and turbulent pipe flow with the same flow rate, the friction factor...","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":4,"explanation":"See Moody chart","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":378503,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-02-13 19:07:48","updated_at":"2018-02-14 17:40:04","questionName":"Are the dimensionless groups that are obtained from the application of the Buckingham Pi theorem unique?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":3,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":412372,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-03-21 20:59:49","updated_at":"2018-03-21 20:59:49","questionName":"A Newtonian fluid flows under steady, laminar conditions through a circular pipe of diameter 0.16 m at Q=0.05 m^3\/s. Under these conditions, the maximum velocity at a section is most nearly","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"Vavg=Q\/(pi*r^2)=2.5, for steady laminar flow in a pipe, Vmax=2Vavg","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":378523,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-02-13 21:38:13","updated_at":"2018-02-14 17:40:04","questionName":"The shear stress in a fluid flowing between parallel plates...","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":6,"explanation":"shear = tau = mu*du\/dy","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":378527,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-02-13 21:43:58","updated_at":"2018-02-14 17:40:04","questionName":"What does the Moody diagram provide?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":7,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":378535,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-02-13 21:56:14","updated_at":"2018-02-14 17:40:04","questionName":"For fully rough pipes, at large RE...","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":9,"explanation":"For fully rough pipes at large Re, roughness does protrude the boundary layer, and the friction factor depends on both Re and e\/D","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":379171,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-02-14 15:02:05","updated_at":"2018-02-14 17:40:04","questionName":"Turbulent boundary layers are better at resisting separation than laminar boundary layers, since...","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":1,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":412371,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-03-21 20:57:38","updated_at":"2018-03-21 20:57:38","questionName":"When a Newtonian fluid flows under steady, laminar conditions through a circular pipe of constant diameter, which of the following is NOT a correct conclusion?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"If the flow is steady and laminar, it is fully developed and velocity is independent of distance along the pipe","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":378530,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-02-13 21:49:01","updated_at":"2018-02-14 17:40:04","questionName":"For a given flow rate through a smooth pipe, when comparing laminar and turbulent flow...","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":8,"explanation":"Look at the velocity profile for each case","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":379175,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-02-14 15:04:57","updated_at":"2018-02-14 17:40:04","questionName":"The momentum integral equation for a boundary layer...","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":2,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":378538,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-02-13 22:00:12","updated_at":"2018-02-14 17:40:04","questionName":"Entrance loss effects are due to...","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":10,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":412373,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-03-21 21:02:24","updated_at":"2018-03-21 21:02:24","questionName":"We are interested in how the drying time t depends on the film length L and the film thickness d, the liquid vapor pressure P, the air speed U, the air viscosity mu, and the air density p. How many dimensionless parameters can be formed from this set of variables?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"Buckingham Pi Theorem: total groups possible = 7-3 = 4","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":378505,"quiz_id":"19368","answer_id":null,"answerType_id":"0","created_at":"2018-02-13 19:12:26","updated_at":"2018-02-14 17:40:04","questionName":"In pipe flow, \u2018minor losses\u2019 associated with bends and valves...","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":5,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null}]
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How does the speed of sound in beer compared to the speed of sound in water. Approximate beer as a mixture of water and small air bubbles in which the bubbles occupy a fraction E of the volume of the mixture.

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