Explore topic-wise MCQs in Aerodynamics.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Aerodynamics knowledge and support exam preparation. Choose a topic below to get started.

1.

In case of translation-vibration transfers, there can be an increase or decrease in kinetic energy.

A. True
B. False
Answer» B. False
Discussion
2.

Which of these is the vibrational rate equation?

A. \(\frac {de_{vib}}{dt} = \frac {1}{τ}\)(e\(_{vib}^{eq}\) – evib)b) τ = \(\frac {1}{k_{1, 0} (1 – e^{- hv/kT} )}\) c) evib = τ(e\(_{vib}^{eq}\) – evib)d) \(\frac {de_{vib}}{dt}\) = \(\frac {1}{τ}\)(e\(_{vib}^{eq}\) – evi
B. τ = \(\frac {1}{k_{1, 0} (1 – e^{- hv/kT} )}\)
C. evib = τ(e\(_{vib}^{eq}\) – evib)
D. \(\frac {de_{vib}}{dt}\) = \(\frac {1}{τ}\)(e\(_{vib}^{eq}\) – evib)
Answer» B. τ = \(\frac {1}{k_{1, 0} (1 – e^{- hv/kT} )}\)
Discussion
3.

What is the master equation for vibrational relaxation?

A. \(\frac {dN_i}{dt}\) = ki + 1, i ZNi + 1 + ki – 1, i ZNi – 1 – ki, i + 1 ZNi – ki, i – 1 ZNi
B. \(\frac {dN_i}{dt}\) = ki + 1, i Ni + 1 + ki – 1, i Ni – 1 – ki, i + 1Ni – ki, i – 1 Ni
C. \(\frac {dN_i}{dt}\) = ZNi + 1 + ZNi – 1 – ZNi, i – 1 – ZNi
D. \(\frac {dN_i}{dt}\) = Pi + 1, i ZNi + 1 + Pi – 1, i ZNi – 1
Answer» C. \(\frac {dN_i}{dt}\) = ZNi + 1 + ZNi – 1 – ZNi, i – 1 – ZNi
Discussion
4.

What is the formula to compute net rate change of the population of the ith level?

A. \(\frac {dN_i}{dt}\) = Pi + 1, i ZNi + 1 + Pi – 1, i ZNi – 1 – Pi, i + 1 ZNi – Pi, i – 1 ZNi
B. \(\frac {dN_i}{dt}\) = – Pi + 1, i ZNi + 1 + Pi – 1, i ZNi – 1 + Pi, i + 1 ZNi + Pi, i – 1 ZNi
C. \(\frac {dN_i}{dt}\) = Pi + 1, i ZNi + 1 – Pi, i + 1 ZNi
D. \(\frac {dN_i}{dt}\) = + Pi – 1, i ZNi – 1 – Pi, i – 1 ZNi
Answer» B. \(\frac {dN_i}{dt}\) = – Pi + 1, i ZNi + 1 + Pi – 1, i ZNi – 1 + Pi, i + 1 ZNi + Pi, i – 1 ZNi
Discussion
5.

What does the product of collision frequency and transition probability yield?

A. Number of transitions per particle per second
B. Number of collisions per second
C. Number of collisions per second per particle
D. Transitions per collision
Answer» B. Number of collisions per second
Discussion
6.

What is the value of transition probability?

A. 0
B. More than 1
C. Less than 1
D. 1
Answer» D. 1
Discussion