MCQ Bank
Mass flow rate across an inlet or outlet: \(\dot{m} =\)______.
- A) \(ρ V_{avg} A_{c}\)
- B) \(mρ V_{avg} A_{c}\)
- C) \( V_{avg} A_{c}\)
- D) \(m V_{avg} A_{c}\)
Which of the relationship between linear acceleration in tangential direction (a_{t}) and angular acceleration (\alpha)?
- A) a_{t} =\omega \alpha/r
- B) a_{t} =\omega r \alpha
- C) a_{t} =r \alpha
- D) a_{t} = \alpha/r
\rho\overline{V}dV is called _______.
- A) momentum
- B) moment
- C) torque
- D) momentum flow rate
The magnitude of angular momentum (\(H\)) is equal to _____.
- A) \(I \alpha\)
- B) \(I \omega \alpha\)
- C) \(I^2 \omega \alpha\)
- D) \(I \omega\)
Mass flow rate across an inlet or outlet: \dot{m} =______.
- A) m V_{avg} A_{c}
- B) V_{avg} A_{c}
- C) mρ V_{avg} A_{c}
- D) ρ V_{avg} A_{c}
\overline{r}\times \dot{m }\overline{V} represents _______.
- A) linear momentum flow rate
- B) moment flow rate
- C) moment flux
- D) angular momentum flow rate
The magnitude of torque M acting on a point mass m at normal distance r from the axis of rotation is equal to ______, where \alpha is angular acceleration.
- A) m r^2 \alpha^2
- B) m r^2 \alpha
- C) m r \alpha^2
- D) m r \alpha
The linear momentum equation is obtained from Reynolds transport theorem by setting b=____ and B=______.
- A) b=\overline{V} and B= m \overline{V}
- B) b=\overline{V} and B=\rho\overline{V}
- C) b= m\overline{V} and B= m\overline{V}
- D) b= m\overline{V} and B=\overline{V}
Total torque (M) is equal to _____, where \alpha is angular acceleration and I is moment of inertia.
- A) I\alpha^2
- B) I\alpha
- C) I^2\alpha
- D) \rho I\alpha
\(\overline{r}\times \dot{m }\overline{V}\) represents _______.
- A) linear momentum flow rate
- B) angular momentum flow rate
- C) moment flow rate
- D) moment flux
Which of the relationship between linear acceleration in tangential direction (\(a_{t}\)) and angular acceleration (\(\alpha\))?
- A) \(a_{t} =\omega \alpha/r\)
- B) \(a_{t} =\omega r \alpha\)
- C) \(a_{t} =r \alpha\)
- D) \(a_{t} = \alpha/r \)
Total torque (\(M\)) is equal to _____, where \(\alpha\) is angular acceleration and \(I\) is moment of inertia.
- A) \(I^2\alpha\)
- B) \(I\alpha\)
- C) \(I\alpha^2\)
- D) \(\rho I\alpha\)
\(\rho\overline{V}dV\) is called _______.
- A) moment
- B) momentum
- C) momentum flow rate
- D) torque
The magnitude of torque M acting on a point mass m at normal distance r from the axis of rotation is equal to ______, where \(\alpha\) is angular acceleration.
- A) \(m r \alpha\)
- B) \(m r \alpha^2\)
- C) \(m r^2 \alpha\)
- D) \(m r^2 \alpha^2\)
The linear momentum equation is obtained from Reynolds transport theorem by setting \(b=\)____ and \(B=\)______.
- A) \(b= m\overline{V} and\) \(B= m\overline{V} \)
- B) \(b=\overline{V} and \) \(B= m \overline{V} \)
- C) \(b=\overline{V} and\) \(B=\rho\overline{V} \)
- D) \(b= m\overline{V} and \) \(B=\overline{V} \)
The magnitude of angular momentum (H) is equal to _____.
- A) I \omega
- B) I^2 \omega \alpha
- C) I \omega \alpha
- D) I \alpha
m L^2 t^{-2} is dimension of ____.
- A) moment
- B) linear momentum
- C) energy
- D) force
The Strouhal number (St) is equal to _____.
- A) St=\frac{fL}{V}
- B) St=\frac{Vg}{fL}
- C) St=\frac{V}{fL}
- D) St=\frac{fL}{Vg}
If t=3.01s, w_0=1.83m/s\ and\ z_0=2m, then dimensionless time (t^*) is equal to________.
- A) t^*=2.7
- B) t^*=2.79
- C) t^*=2.75
- D) t^*=2.71
m L^2 t^{-1} is dimension of ____.
- A) angular momentum
- B) moment
- C) linear momentum
- D) force