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QUIZ 3 – Report

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Academic year: 2022

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QUIZ 3 – Report

General

Total number of students 42

Attended 40

Missed 2

Average grade 7.23

Standard deviation of grades 2.07

Grade distribution

Comparison with last five years

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Grade history

Attendance history

Comments

• 17.5% of students did not apply correctly the continuity equation. Some used conservation of volume flow rate (ignoring the change in density), some applied Bernoulli equation.

• 30% of students did not consider the fuel flow rate in the continuity equation.

• 12.5% of students did not consider the net force on section 1 given by P1A1.

• 35% of students did consider the net force but used absolute pressure instead of gage pressure.

• 12.5% of students used one value of mass flow rate on the right hand side of momentum equation instead of

𝑚𝑚̇2𝑉𝑉2− 𝑚𝑚̇1𝑉𝑉1

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