d. none of the above. 79. The relation [AV]1/vi evaluated at the inlet with respect to [AV]2/v2 evaluated at the exit is a. smaller. b. equal. greater. d. none of the above. 80. The time rate of mass increase within the compressor is a. positive. b. negative. с. с. zero. d. none of the above.
d. none of the above. 79. The relation [AV]1/vi evaluated at the inlet with respect to [AV]2/v2 evaluated at the exit is a. smaller. b. equal. greater. d. none of the above. 80. The time rate of mass increase within the compressor is a. positive. b. negative. с. с. zero. d. none of the above.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
Related questions
Question
answer 79, 80
![Thermodynamic Keys
Conservation of Mass
Questions 76-80 are based air entering a compressor operating at steady state
with a pressure of 14.7 psi, a temperature of 80 F, and a volumetric flow rate of 1000 efm.
At the exit, the pressure is 100 psi and the temperature is 400°F. Assume the ideal gas
model is valid.
76. The air inlet mass flow rate mi can be determined from
a. pi[AV]I
b. [AV]1/v
c. both of the above.
d. none of the above.
77. The air exit mass flow rate m2 can be determined from
a. p2[AV]:
b. [AV]z/v2
c. mi
d. all of the above.
78. The air inlet mass flow rate mi in respect to the air exit mass flow rate m2 is
a. smaller.
b. equal.
c. larger.
d. none of the above.
79. The relation [AV]1/vi evaluated at the inlet with respect to [AV]2/v2 evaluated at the
exit is
a. smaller.
b. equal.
c. greater.
d. none of the above.
80. The time rate of mass increase within the compressor is
a. positive.
b. negative.
c.
zero.
d.
none of the above.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe801909c-59c9-4b6d-8f92-02e1e3a7b70b%2F125bcf21-1f22-4d72-a599-dd7e3bf454fc%2Fn181znm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Thermodynamic Keys
Conservation of Mass
Questions 76-80 are based air entering a compressor operating at steady state
with a pressure of 14.7 psi, a temperature of 80 F, and a volumetric flow rate of 1000 efm.
At the exit, the pressure is 100 psi and the temperature is 400°F. Assume the ideal gas
model is valid.
76. The air inlet mass flow rate mi can be determined from
a. pi[AV]I
b. [AV]1/v
c. both of the above.
d. none of the above.
77. The air exit mass flow rate m2 can be determined from
a. p2[AV]:
b. [AV]z/v2
c. mi
d. all of the above.
78. The air inlet mass flow rate mi in respect to the air exit mass flow rate m2 is
a. smaller.
b. equal.
c. larger.
d. none of the above.
79. The relation [AV]1/vi evaluated at the inlet with respect to [AV]2/v2 evaluated at the
exit is
a. smaller.
b. equal.
c. greater.
d. none of the above.
80. The time rate of mass increase within the compressor is
a. positive.
b. negative.
c.
zero.
d.
none of the above.
Expert Solution
Step 1
P1=14.7psi
T1=80 F
Q=1000cfm
P2=100psi
T2=400 F
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