List of top Aerospace Engineering Questions asked in TS PGECET

An aircraft has a minimum sink rate of \(1.5\ \text{m/s}\). If it starts gliding from an altitude of \(1800\) metres, what is its maximum endurance (loiter time) in minutes?

Crosswind primarily affects

How does an increase in density altitude (lower air density) affect the take-off ground roll distance (\(S_g\))?

For a jet airplane, the maximum rate of climb occurs at the speed where

In an aircraft, what is the condition for the absolute ceiling?

An aircraft has the drag polar \[ C_D=0.020+0.040C_L^2. \] What is the total drag coefficient when the aspect ratio is \(4\)?

The "elevons" are primary control surfaces that combine the functions of the following two components?

Which of the following best defines Density Altitude?

If a pilot fails to update the altimeter setting when flying from a high-pressure area to a low-pressure area, the aircraft altitude will be

Equivalent Air Speed (EAS) is

Gravity loss during rocket flight occurs because

A vertical rocket has mass \(10,000\ \text{kg}\), thrust \(150,000\ \text{N}\) and drag \(20,000\ \text{N}\). The instantaneous acceleration (in \(\text{m/s}^2\)) is

Liquid chemical rockets are often classified by the type of propellants used. Which of the following is correct?

In multi-stage rockets, the stage mass fraction is defined as

A rocket stage that ignites after the previous stage is jettisoned is called

A rocket produces maximum thrust in vacuum because

Which of the following increases the thrust of a rocket engine?

Drag loss in a rocket flight is

Specific impulse of a rocket engine is defined as

In a solid propellant rocket, the thrust level is primarily controlled by

One major advantage of liquid propellant rockets over solid propellant rockets is

For maximum thrust in a rocket nozzle, the exit pressure should be

Compressor surge occurs when

A centrifugal compressor has an impeller tip speed of \(200\ \text{m/s}\). The whirl component of absolute velocity at the impeller exit is \(150\ \text{m/s}\). The whirl component of velocity at the inlet is zero. The specific heat at constant pressure is \(1\ \text{kJ/kg K}\). Using Euler's compressor principle, determine the temperature rise across the impeller.

The primary function of the inducer in a centrifugal compressor is to