An Electromagnetic Flowmeter Is Useful When It Is Desirable Not $V = 2.88 \mathrm { mV }$

question 105

Multiple Choice

An electromagnetic flowmeter is useful when it is desirable not to interrupt the system in which the fluid is flowing (such as the blood in an artery during heart surgery) . Such a device is illustrated in the figure. The conducting fluid moves with speed v in a tube of diameter d. Perpendicular to this tube is a magnetic field B. A voltage V is induced between opposite sides of the tube due to the motion of the conducting fluid in the magnetic field. For a certain case, B = 0.120 T, d = 1.2 cm, and the measured voltage is $V = 2.88 \mathrm { mV }$ Determine the speed of the fluid.

• A) 2.0 m/s
• B) 11 m/s
• C) 0.075 m/s
• D) 1.1 m/s
• E) 750 m/s

Understand decision-making environments: certain, risk, and uncertain environments.

Identify the steps involved in the decision-making process.

Recognize common mistakes in the problem identification and definition phase of decision-making.

Understand how pre-set solutions (programmed decisions) apply to structured problems.

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