KERALA UNIVERSITY Class 7 gas dynamics Question Paper 2008

Practice authentic previous year questions for better exam preparation.

Sample Questions

Explain Rayleigh flow clearly stating assumptions. Give examples.
(a) Derive the following relation for a Rayleigh flow. $$ \frac{Q_{\max }}{C_{p} T_{1}}=\frac{\left(1-M^{2}\right)^{2}}{2(1+\gamma) M^{2}} $$
(b) Air flows through a constant area duct. Pressure and temperature of the air at inlet to the duct are 100 kPa and $10^{\circ} \mathrm{C}$ respectively and the inlet Mach number is 2.8. Heat is transferred to the air as it flows through the duct an...
(b) The pressure, temperature and Mach number at the entry of a flow Passage are 2.45 bar, 26.5 C and 1.4 respectively. If the exit Mach number is 2.5 determine for adiabatic flow of a perfect gas $\gamma=1.3, \mathrm{R}=0.469 \mathrm{~kJ} / \mathrm{...
(i) stagnation temperature, (ii) temperature and velocity of gas at exit, and (iii) the flow rate per square metre of the inlet cross-section.