Cuestionario de Máquinas Térmicas - UNCP
Quiz
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Physics, Physical Ed
•
University
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Medium
Nilton Arzapalo
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20 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Si la eficiencia térmica Brayton es 37.5, la relación de presión es...
4.8/1
5.0/1
5.2/1
5.4/1
2.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Si la potencia de un compresor es 5.0kJ/s, su potencia en HP será ...
55 HP
57 HP
65 HP
67 HP
3.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Un compresor opera con una relación de presión de 5; T1=17°C; T2=220°C con Cp=cte. La eficiencia interna de compresión es:
81.4%
83.4%
85.4%
87.4%
4.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Un compresor opera con una relación de presión de 5; T1=17°C; T2=220°C con Cp=cte. ¿Cuál será el exponente politrópico del compresor?
1.462
1.472
1.482
1.492
5.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Si C=f(T) es un proceso a entropía constante. Determinar la velocidad “C” en un punto de una tobera donde T=1440.6 °R en pies /s.
1840.5
1850.5
1860.5
1870.5
6.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Sabiendo que el flujo másico equivale a a la velocidad por el área dividido entre el volumen específico, en el flujo subsónico, el volumen específico puede considerarse:
Depende de la temperatura
Variable
Constante
Depende de la presión
7.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
En una turbina de gas opera con wA=480 kJ/kg; con un coeficiente en la tobera de 0.95. ¿Cuál será la velocidad del fluido de ingreso a la turbina?.
910.8 m/s
920.8 m/s
930.8 m/s
900.8 m/s
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