1. determining change in a dependent variable per unit change in a n independent variable
2. determining whether a qualitative factor affects the mea n of a n output variable
3. determining whether significant correlation exists between a n output variable and a n input variable
4. determining whether variances in two or more populations are significantly different
determining whether variances in two or more populations are significantly different
1.
2.
3. zero
4.
1. Force F
2. Force F and bending moment FL
3. Force F and twisting moment FL
4. Force F, bending moment F L, and twisting moment FL
Force F and twisting moment FL
1. Principal stress theory
2. Principal strain theory
3. Strain energy theory
4. Maximum shear stress theory
Maximum shear stress theory
1. Link 2 rotates clockwise
2. Link 2 rotates counter - clockwise
3. Link 2 does not move
4. Link 2 motion cannot be determined
Link 2 rotates counter - clockwise
1. Vibration of a stretched string
2. Motion of a projective in a gravitational field
3. He at flow in thin rod
4. Oscillation of a simple pendulum
Vibration of a stretched string
1. Pre-tensioning helps to sea l the pressure vessel
2. Pre-tensioning reduces the maximum tensile stress in the bolts
3. Pre-tensioning increases the fatigue life of the bolts
4. Pre-tensioning helps to reduce the effect of pressure pulsations in the pressure vessel
Pre-tensioning reduces the maximum tensile stress in the bolts
1. P/4
2. P/2
3. P
4. 2P
2P
1. remain unchanged
2. increase to double its value
3. increase but will not reach double its value
4. increase to more than double its value
increase but will not reach double its value
1. ηs > ηc
2. ηs = ηc
3. ηs < ηc
4. The sign of (ηs - ηc) depends on the working fluids used
ηs < ηc