What happens to the drag of a jet aeroplane if, during the initial climb after takeoff, a constant IAS and constant configuration is maintained? (Assume a constant mass..

The drag remains almost constant

The drag increases initially and decrease thereafter

The drag increases considerably

What happens to the speed for Vx and Vy with increasing altitude?

Vx remains constant and Vy decreases.

Vx remains constant and Vy increases.

Vx increases and Vy remains constant.

Two identical aeroplanes at different masses are descending at idle thrust. Which of the following statements correctly describes their descent characteristics?

At a given angle of attack, both the vertical and the forward speed are greater for the heavier aeroplane.

There is no difference between the descent characteristics of the two aeroplanes.

At a given angle of attack the heavier aeroplane will always glide further than the lighter aeroplane.

At a given angle of attack the lighter aeroplane will always glide further than the heavier aeroplane.

When comparing Vx to Vy:

Vy will always be greater than or equal to Vx.

Vx will always be greater than Vy.

Vy will always be greater than Vx.

Vx will sometimes be greater than Vy, but sometimes be less than Vy.

An increase in atmospheric pressure has, among other things, the following consequences on take-off performance

a reduced take-off distance and improved initial climb performance

a reduced take-off distance and degraded initial climb performance

an increases take-off distance and degraded initial climb performance

an increased take-off distance and improved initial climb performance

Which of the following combinations has an effect on the angle of decent in a glide? (Ignore compressibility effects).

Configuration and angle of attack.

A higher outside air temperature

reduces the angle and the rate of climb

does not have any noticeable effect on climb performance

reduces the angle of climb but increases the rate of climb

increases the angle of climb but decreases the rate of climb

The take-off climb gradient:

is independent of the wind component

increases in a head wind and decreases in a tail wind

decreases in a head wind and increases in a tail wind

is determined with the aircraft in the take-off configuration

Which statement is correct for a descent without engine thrust at maximum lift to drag ratio speed?

The higher the gross mass the greater is the speed for descent

The mass of an aeroplane does not have any effect on the speed for descent

The higher the gross mass the lower is the speed for descent.

The higher the average tempwrature (OAT, the lower is the speed for descent.

The effect of changing altitude on the maximum rate of climb (ROC) and speed for best rate of climb for a turbo-jet aircraft, assuming everything else remains constant, is:

as altitude increases the ROC and speed both decrease

as altitude increases the ROC and speed both increase

as altitude increases the ROC decreases but the speed remains constant

as altitude increases the ROC remains constant but the speed increases

DGCA Performance: Climb & Descent Questions

292 exam-style Climb & Descent questions for the DGCA Performance paper (CPL · ATPL · PPL). The first 12 are free below with answers and explanations — sign up free to practise all of them with progress tracking.

Q1
What happens to the drag of a jet aeroplane if, during the initial climb after takeoff, a constant IAS and constant configuration is maintained? (Assume a constant mass..
- A The drag decreases
- B The drag increases initially and decrease thereafter
- C The drag remains almost constant
- D The drag increases considerably
Show answer

Correct answer: C. The drag remains almost constant

This Explanation is Coming Soon
Q2
What happens to the speed for Vx and Vy with increasing altitude?
- A Both remain constant
- B Vx remains constant and Vy increases.
- C Vx increases and Vy remains constant.
- D Vx remains constant and Vy decreases.
Show answer

Correct answer: D. Vx remains constant and Vy decreases.

This Explanation is Coming Soon
Q3
Two identical aeroplanes at different masses are descending at idle thrust. Which of the following statements correctly describes their descent characteristics?
- A At a given angle of attack, both the vertical and the forward speed are greater for the heavier aeroplane.
- B There is no difference between the descent characteristics of the two aeroplanes.
- C At a given angle of attack the heavier aeroplane will always glide further than the lighter aeroplane.
- D At a given angle of attack the lighter aeroplane will always glide further than the heavier aeroplane.
Show answer

Correct answer: A. At a given angle of attack, both the vertical and the forward speed are greater for the heavier aeroplane.

This Explanation is Coming Soon
Q4
The speed for best rate of climb is called?
- A VO
- B VY
- C VX
- D V2
Show answer

Correct answer: B. VY

This Explanation is Coming Soon
Q5
In a steady descending flight equilibrium of forces acting on the aeroplane is given by: (T=Thrust, D = Drag, W=Weight, descent angle = GAMMA)
- A T+D=-W sin GAMMA
- B T+W sin GAMMA = D
- C T - W sin GAMMA = D
- D T -D =W sin GAMMA
Show answer

Correct answer: B. T+W sin GAMMA = D

This Explanation is Coming Soon
Q6
When comparing Vx to Vy:
- A Vx will always be greater than Vy.
- B Vy will always be greater than or equal to Vx.
- C Vy will always be greater than Vx.
- D Vx will sometimes be greater than Vy, but sometimes be less than Vy.
Show answer

Correct answer: B. Vy will always be greater than or equal to Vx.

This Explanation is Coming Soon
Q7
An increase in atmospheric pressure has, among other things, the following consequences on take-off performance
- A a reduced take-off distance and degraded initial climb performance
- B a reduced take-off distance and improved initial climb performance
- C an increases take-off distance and degraded initial climb performance
- D an increased take-off distance and improved initial climb performance
Show answer

Correct answer: B. a reduced take-off distance and improved initial climb performance

This Explanation is Coming Soon
Q8
Which of the following combinations has an effect on the angle of decent in a glide? (Ignore compressibility effects).
- A Configuration and mass.
- B Configuration and angle of attack.
- C Mass and altitude.
- D Altitude and configuration.
Show answer

Correct answer: B. Configuration and angle of attack.

This Explanation is Coming Soon
Q9
A higher outside air temperature
- A does not have any noticeable effect on climb performance
- B reduces the angle of climb but increases the rate of climb
- C reduces the angle and the rate of climb
- D increases the angle of climb but decreases the rate of climb
Show answer

Correct answer: C. reduces the angle and the rate of climb

This Explanation is Coming Soon
Q10
The take-off climb gradient:
- A increases in a head wind and decreases in a tail wind
- B decreases in a head wind and increases in a tail wind
- C is independent of the wind component
- D is determined with the aircraft in the take-off configuration
Show answer

Correct answer: C. is independent of the wind component

This Explanation is Coming Soon
Q11
Which statement is correct for a descent without engine thrust at maximum lift to drag ratio speed?
- A The mass of an aeroplane does not have any effect on the speed for descent
- B The higher the gross mass the greater is the speed for descent
- C The higher the gross mass the lower is the speed for descent.
- D The higher the average tempwrature (OAT, the lower is the speed for descent.
Show answer

Correct answer: B. The higher the gross mass the greater is the speed for descent

This Explanation is Coming Soon
Q12
The effect of changing altitude on the maximum rate of climb (ROC) and speed for best rate of climb for a turbo-jet aircraft, assuming everything else remains constant, is:
- A as altitude increases the ROC and speed both decrease
- B as altitude increases the ROC and speed both increase
- C as altitude increases the ROC decreases but the speed remains constant
- D as altitude increases the ROC remains constant but the speed increases
Show answer

Correct answer: A. as altitude increases the ROC and speed both decrease

This Explanation is Coming Soon

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