If the coefficient of equivalent length of the long column is doubled, the critical pressure of the column will be ( ).
A: Doubled
B: Increased by 4 times
C: One half of the original
D: A quarter of the original
A: Doubled
B: Increased by 4 times
C: One half of the original
D: A quarter of the original
举一反三
- According to Euler's column theory, the crippling load for a column of length (l) fixed at both ends is a column with both ends hinged. A: equal to B: two times C: four times D: eight times
- When the number of turns in a solenoid and its length are both doubled, the ratio of the magnitude of the new magnetic field inside to the magnitude of the original magnetic field inside is: A: 0.25 B: 0.50 C: 1 D: 2 E: 4
- Among the following conclusions about the critical stress σcr of the compressive column, the correct one is ( ). A: The σcr value of the long column is independent of the material B: The σcr value of the intermediate column is independent of the flexibility C: The σcr value of the intermediate column is independent of the material D: The σcr value of the small flexibility column is independent of the flexibility
- Among the following conclusions about the critical stress σcr of the compressive column, the correct one is ( ) A: The σcr value of the long column is independent of the material B: The σcr value of the intermediate column is independent of the flexibility C: The σcr value of the intermediate column is independent of the materia D: The σcr value of the small flexibility column is independent of the flexibility
- The slender column is under axial compressive load P, the critical load [img=23x22]1803a0faa055141.png[/img] is independent of ( ). A: the material of the column B: the length of the column C: the magnitude of the P D: the shape and dimension of the cross section of the column