Quizizz2.4 Dureza
Quiz
•
Engineering
•
University
•
Practice Problem
•
Easy
SALVADOR JIMENEZ IBARRA
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es la carga mayor que se debe aplicar en la escala de dureza Rockwell C?
10
100
150
60
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué dureza Rockwell HRB tendrá un aluminio que sufre una profundidad de penetración de 0.160mm?
50
60
70
80
3.
DROPDOWN QUESTION
1 min • 1 pt
¿cuál es la escala más adecuada para medir dureza en aceros suabes, bronces o latones? (a)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una placa de acero tiene una resistencia a la tensión de 135 000 psi, ¿Cuál será su dureza Brinell? Estime este valor utilizando una relación empírica.
270 HB
270 HRB
135 HB
370 HB
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué penetrador o indentador se usa para medir dureza Rockwell en la escala F?
Bola de 1/8”
BRALE cono de diamante 120
Bola de tungsteno de 10mm
Bola de 1/16”
6.
DRAG AND DROP QUESTION
1 min • 1 pt
Cuando se retira la carga mayor en un ensayo de dureza Rockwell se nota que la aguja se regresa o que el material se recupera, ¿este fenómeno a que se debe? (a)
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Para definir una escala de dureza Rockwell A se debe usar un indentador o penetrador cono de diamante (BRALE) y una carga de _____ kg.
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