List of top Aerospace Engineering Questions asked in TS PGECET

If a rocket engine produces 30 kN thrust operating at chamber pressure of 4 MPa with throat diameter of 100 mm, then the thrust coefficient of a rocket engine is:
During rocket testing, the characteristic velocity of a choked nozzle with stagnation temperature of 2400 K is (\(\gamma = 1.3\), \(M = 28\ \text{kg/kmol}\))
A grain in which thrust, pressure and burning surface area increase with burn time is called as
The interval from 10% maximum initial pressure (or thrust) to web burnout, with web burnout usually taken as the aft tangent-bisector point on the pressure–time trace is called as
The period from the instant the igniter receives its signal until a portion of the grain surface burns and produces hot gases is called as
In rocket combustion phenomenon, the source that possibly triggers high-frequency pressure-wave instabilities is called
The propellants, which exhibit negative values of burn rate over a certain range of pressure are known as
Total impulse is defined as
Example for high energy oxidizer is
Which one of the following is not related to solid propellant rocket?
Choose the correct statement for the rocket engine
The ratio of the actual and perfectly guided values of the whirl components at the exit is known as
Which one of the following blades is more suitable for better efficiency and stable for wider range of operation?
If there are no guide vanes, \( C_1 \) will be radial (\( \alpha_1 = 90^\circ \)), then this particular condition is expressed as
If \(\beta>90^\circ\), then the blade shapes are known as
In centrifugal compressor, the outlet casing, which comprises a fluid collector is known as
Multistage reaction turbines are employed to attain
If the turbine nozzle operates at a higher pressure ratio than the design value, then it is called as
A turbine rotor blade is one, which transfers energy
When compared with centrifugal compressor, the isentropic efficiency of axial flow compressor is
In a multistage axial flow compressor, the axial velocity at higher stage
The ratio of axial velocity to peripheral speed of the blades is
In a flow compressor, the absolute velocity in the stator
The reduction in work capacity can be accounted by the use of
The optimum expansion in the nozzle occurs when